1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5390a5d59e754ae31c642c670efca5226bc91930232c4bb9466c7ed264323a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcddb430-48cf-4612-b9c5-e75c2d7b0f1c.json and https://artists.proofprofile.net/proofs/artist/bcddb430-48cf-4612-b9c5-e75c2d7b0f1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f05ebbe76454c50028b58f87e83fa441ea9a5f27aeb3e4bb7c9c51a2ab7b63e. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARR9V2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c133941a3ee017d91730cd0d34a5817099cf024459f657bbc641d1e9ed70ac3. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARR9V2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47ee390dea6b82d8a8edc0c8a73dd4b95d3e600e730a25b4d26bd43734a9965. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARR9V2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2021b8756b446718caf33115a9d694f1a7f0c703701a6ca8467442aa7a9180ac. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARR9V2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7358aa29e7225132fc29ad27de49f02bab286a56ce9ff750c1e77958e6e52678. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARR9V2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a64e2e9cc192f326c03b0b6b56db16349205a651f97ebad8d08772d8e9b92a9. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARR9V2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b0e9441a93a218494a2285d0293f77d12a8a8b97438b2f0ad14de8d7c1d2d6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARR9V2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb9b3ee0630b2b462c439c4ed14430323d6fcda0a9388d4d2a2c5ef34def02f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARR9V2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d1d5c6c827d551b37471ef65e43856eafa9152c535810f0f64cac8b85312bf. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARR9V2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f4c7e1415e44889ef977f26710c234d0aa0e9238f8fa8bf95133ffd8983b8c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARR9V2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfb587f4ecb7ed75e3f561824fa140ca3be1b496903d4761b9dfef9ebe65309. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARR9V2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d3406cb5c50d19c827b36a53d0b9e5f6e52189af5698d722f66979646d2813. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARR9V2200012.
Variaciones sobre un tema de Atahualpa Yupanqui
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669fc533a3dfc3ad1cdbf15e0a1e88060b5e4e6f1cecd645d5a56059312360ae. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332200820.
Elegia por la muerte de un tanguero: I. Confuseta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ace69e18a4d61032e01d8d3a4c77a2e832ab673ad28d22005783014f9f1d8d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332200821.
Elegia por la muerte de un tanguero: II. Melancolia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9fd42a7daa84c37beb1ab08249c8a115aa55afeaded1a4a3577fca944c00b4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332200822.
Elegia por la muerte de un tanguero: III. Epilogo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f7c5b97905cad03f316b009c1f060caa7b56e246f77b8350a1c56d6ab04d7b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332200823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d0601b25c8f23afa26bbb8b24b031b912eb821d1bd6af0fa16002ed0bc2088. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332200824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84fb9f44cfa8943e869b14e6b11881bb663b4fe41ba332e1ea466eeecd7aed5. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332200825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c75cb2f837ea031db4ee1becc6ee40133b62769dab213bf6ffcef7b6ca54c3. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332200826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4cf69bfc45e1017691292a209d29851e48469d4c7a18b1f2f3a9c0e886f4ad. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332200828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d41e81ebb736603a7377870bc5279a05d0bb68810cd15dbbb079dfa08f31294. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332200829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588813181a14835a346caec47f4c909336796a87e3c2c260e7d8463bdb520cb5. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780a844fad867968b83c17b6b04cb33c46c18808a8ae288793b6aa2596876250. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfb1c9a807a655883e0c8d7bbb407a4382ea507a7ea196c53d41974e0820906. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ef3bc5beaa2a8b1997ee7b742d31037bc79f1958cd14e66e080cfb7fa150ab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d00809119ea5fb7c8ff248ffa2d370aa77a537fa946249277ee302d1309963c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61aa0db8bb7e5da9de9b95bbf7845a4930b4014d41301c9f4a1c2792c8df6470. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f8633510b5bbe28ceb935d956f1aec1b14e3a22482425547b85fb4bef8ed04. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a975c904286d340218ed282e7ddccd663158bf90982c3663545015be99ad207. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de492455cf8397523a510f26c9cd7ecca69e0aae37fc69b3884f6e0651cb22e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195fe0258ab98dd9f593f57bdb2520734dc06d02ba15ac7c0ce6cbe6bddcaf82. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946bc9015c8257a7df8785ba9b9d41f874ea7231bf99d330292b85e396af6e39. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc173fdf3e55d27d9daaa937ee4bcaccd8974dc06b62334026f1ee2a14ef82a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ee66f095b58da47bc3b6f783d77dc87f34665cc04b90c4ff9f974a7ad3847e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb570061b138f438fd076879450c6b623dd2c14f3d49cab9729f0701d536fb7da. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4739971626d1548deeeed0ee40c97518ab560cfd9694f74fdae8aee9a8839bd8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1caaa7410a02345f441e7869f3680b38b5f525c5099bab73b9a53c1e1117ae2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3f578e9ba3f8aa5414d1e86594f9ec18ee25756c27e37d6d024d9764a95cc7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69b33b322c4d115144bc3963e0398ad537b870159624c5177042ecb71013758. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3846d4bdce19cd4ffefe2a00e3770b0a39a0a3fe0c1e905830ab6d71d2e4159. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ021600348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e49ce87352d093210c4629350cd6c4bdfbbeb4315649b43b4101de9b1dbeb5c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARR9V1000001.
Tango, Milonga y Final: I. Tango de Abril
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8d56271bf1ac9df71de79c7b0137988b8ead33afac326a974e2c78796e551d. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY330905573.
Tango, Milonga y Final: II. Milonga de Junio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cea023110bc5ce3c1d89fc62f2e430330981b92f8ce053122c587ebbb199dd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY330905574.
Tango, Milonga y Final: III. Final. Feliz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fe04e4bcc81f99aeb8ca99da76c1aa6053f107eaf961f90af37858f1a3b034. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY330905575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb030a30110514600abd1dbd275d71fd4a717e9e9f0c7d6938a7e00521219458e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY330905579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e0155809e01b5f6091329ddcc6953bad39b2c77060b798f10601dd164a0e2f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY330905582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfe69559e07ea3379440a6d8f53cf626ad6114b8268ee4b89484ba748ba0b1c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY330905583.
Tres Piezas de Otoño: III. Avenida Centenario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899932a563843161c4ff5c3f37020152655efa5e5c0e31965c40fd6c481e47ec. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY330905584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2439b67949ec250c1e4db0b710627e0cd41a38c262a0eca5096a2c948cc931. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952566563bd19bbbe4441aad6c9f9a369859d3548cf2bb0a8484e95f2d8a57bc. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc51397b54ddb04f505ee16021efb9535c8dc5bd900991ab8fcc36b45a2eb5c1. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49630891c0bda0329697492216966db78a8c29a48c6955e1c2c7035b406b622c. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8857f8909def779e2bbb45f99c145d684124e54ed0aa294986f1d45943f582. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf682aab2aba2b06385b222fab43096bac95860ab2481ec7b02b8f27cb0a36361. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ded9ed28f22f0b0d90250718c346dc5b59623ad177b769b80a145790c9c4a8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7df8e3b610fa7b7c42fb43654e98b0b366e3fd94bcc0de0e1753a21257b512. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b149dd89a2164bf7b2ccbb952bbd464eba91d681a6f5140c0ec6d9d71e2f35. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1297d5ae2fede0731535a0ba195d0cab1e8a40a12432ea75aa670143fe7c7cbf. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd216e3c8e9340ea39e17d3f737886f785fad2aca1235dc25d8c42060d43d67. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7440f704e0776ca63c5a9a370ad3ef9c30b92c29dfac1d66483476d4977b7fe. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa48cd12d068cf0a4a6ca819036a77b2dbf7aa671af7fc7341b91d6193f8ae15. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb56db4a151a26a041c10cdedd44321f1246ae8b95cb0752668dd08342ad519d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19800a7561946d33527da076147916764af0fadc9b9c2d270385e9a3e5de7ce5. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa68cf6b8cb4818a0dcbaab9d2aaf32c55e858f181deef65599c335c3feb9dc3. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee30e6be1c44b0bfd5cca822c6557d7669251e0926c50de73dadee1f61dbb47. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2895a3c9ab1725a80e2ae893bb2915ae620d55468c3cb28e729c290f37f7ac29. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020801998.
Tango, Milonga y Final (Oeuvres pour deux guitares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696728cda949d1f785878305e87b921c3e7db78ae1e78d3c60c86e7d729c5570. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX191302229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dedafc04ee4a037c13b2640d1d42b17f28ab828074b79b972be72f3f7267e0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX191302230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102be282fb80d74ce4dfd2071c1c41732067b4ffc02b7f4438488b2c4aa412c7. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020800909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b57584d103a1fff8a94254ec1a44963a4ece025ce3431076dd59a0c1741dfb5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020800920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb82a242ff194420c1be15c4f49a012e92b91d9069a3b1ffd7c95a97969968a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020800921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b9b0ad3579dae01c1824b53d4532418ad8dcce26486c7d9b23ec975ec5945c. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARZ020800922.
Victor Villadangos & Cuarteto de Cuerdas de la Universidad de La Plata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f41681bf59e45a8ec5c9cb83600f410cdd89cb953d7996a4565ca5d9d796d8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEKM62400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad85f057bfd9d39fbeb273cfd824138dcfaf50410fcfe8179b966380ce355ab. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWZ2223572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68081ee5f35c6e40b41eb3c18689161530f3ee1889bd4a8b8744b2c2dd743492. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32167433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0d487861206b145d90db18ed324c04d017a423fdce1533718abb200729ad65. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32167434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f74087f4e60aadc7684bcfe620ca86db3b3f0ae7658a646e8986caced2e890. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32167435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a01db0272c5ce3b1e0c4357b8d0b91fc6147cbb77fd5c2a483e1ac33b20f644. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32167436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa806c004f2dbfd0317b1b66502ba4569ebf9e093afcc5a54683981fee3d7cf84. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32167437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e5d88ddd17eaecd8078e92df33d40a47e51eb92a4a2374778eb336ba6cfd2a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAB01150274.