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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4b7c9baec069b1d1de9009f2297f920bb1fab4f8249b018a3af576bfb284c8. 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/dd2cb1f8-c27b-40a4-a2ab-47a00aef2e29.json and https://artists.proofprofile.net/proofs/artist/dd2cb1f8-c27b-40a4-a2ab-47a00aef2e29.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9850d796bb9b9ecdcd2c0af3cc0dfd16b0c7ad723d420d73dfac4a43691ab5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USJ3V1094678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc9898a75a645de79ac81b173d24e81ca087bba7dd286628a01534563d5047e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USJ3V1094679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12290acb135c55ac154c74b921eefb99c24eec548059128b2802c272e10fa672. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USJ3V1094680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858196252f86b372db535381ed36b8271ef0c1cd6a784e399f260bdf700ca5d6. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USJ3V1094681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa598089bfc37456b161f96ce2598e498eaa299f09a43388b6c11409aaa6f1767. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USJ3V1167981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d211da3d921b64de54312377d56fba4d5912b2a3a930689c627539d75a1163b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USJ3V1167982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a87545bf0fc5fd7c0c33aec1d52293348f9205be0af9a1520decba50a8a5e3. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USJ3V1167983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5677e1a556f0c7f4fa26fe2256be489bb0b3b68822db215b610e8c9664beb8a9. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USJ3V1167985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a77ead25e05868518f9e0f648788a4febac69c6bea9cc19dc337488eb3d1db. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/USJ3V1167961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc61b8996a3646968e55322c6b9373d40d8d39b9bbbfebc4526617a475be5ac0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:58Z), 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/USJ3V1167966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d2700570d1fb4ca978b6867ad5b9b00118826a25a540d64066facf4b627a43. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/USJ3V1040198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c74ab097041ef1b591da13699e44f1f4a35070728ab932796aae5f4bc39553a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:03Z), 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/USJ3V1040199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aebcec723c0f7b4dd3a31d8aed0363e692c1973b85647d4233376428fe471c7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USJ3V1040205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1cfbaf1796e2e28eb03293bde0f7926d2f463550e6d568e91c8df576243a1d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/USJ3V1040206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6083189146a5107fb3d0b662e9152abf398b0617902cada59c720f0e75feb4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:44:11Z), 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/USJ3V1259838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0153d8b8e5688b72f3f5a01fe1e23cfc8a4832bbc5dbe0f5e281e1472af3b934. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USJ3V1259840.
La Calandria / La Carta / La Mascara / El Sirenito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2ae5a854194bc3b2282c8c04878442cfe1c7af66f263566325dbfb2cfd1993. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM6DC1670322.
Que Siga la Danza / Camaron Pelao / Chabe / El Bailecito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6357b335888c7c9a3e086f4d6d8ad7ac5c6dcee68ff52de49eeb27b9dc019cb3. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:52:17Z), 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/QM6DC1670323.
Soñe Contigo / Cumbia De Mi Rancho / La Novia Fea / La Pollera Amarilla / Si Tu Te Vas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3a56654294ac2628261e4f4ae34f30b23e4800f1dceb25ea2cc2e2a41529a5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6DC1670324.
Juan Colorado / El Toro Requezon / El Pato / Los Santiagos / El Huentli
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265fe87ac220aed8c60765469c81f941f76b9130431f38c58e1a6366fe259deb. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QM6DC1670316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a034a2f9b5f1de8138af970d548eaa4e078632da1e5a152dd835e1b080cabd. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:23:39Z), 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/QM6DC1670318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4d4d52d2ac98d0b5c14f60a5bd1f98b8febdc840625ec08ca5ee4bfb0666e0. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM6DC1670319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b15516c677686dc1676856ba4c4fdb8f2207ca970ce40d5a74ec8785038ec9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:32:58Z), 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/QZDQH2268813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cc9487055a5cc616af06fae84a17673fe4e537408ac6de9c9bc7046fd6dd4f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:17:35Z), 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/QZDQH2268814.
El Baile De La Iguana (Versión Original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8201fedb4eb85b0009f117245c86c379054160ebb7d9b52ccf2fdbff1e43fca2. 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/USJ3V1118556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fdacfffa35e47fb5f12ff3d4f1e95da5cb91cf844ef6410d51a13f5c278226. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USJ3V1046208.