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 0x5256a00ef66fd70188e750d8a258994e53174821b3eef300aa1b2f4d2886ef1e. 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/387af9c0-54a7-437f-b459-df629e60c064.json and https://artists.proofprofile.net/proofs/artist/387af9c0-54a7-437f-b459-df629e60c064.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 0x3d8b7be2ecc442c6fe3149f3b71948b7ff3eeb3f871b2a0f740cb58ff37d8bc2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMEN2432009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebd484adad7c3bfeb92e1ae219df8c055cc06acc0c716453feac51f3dfe2b65. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM22457341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08344368472b8fcab638d62f5abe95d802a26e9d8aab72e9bc6bbeae75218bb1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN62467190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ff27a23f3ce456b4d54e418be6013bf2b1665dfd0ae822c0d78cfe17468f74. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMSAV1104841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde89c53fcc307ac659b0cd52f7327420f8dbb688d9616ce2f5da53e91ac1d19. 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/QZHN72225624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf9607bc8ba0ac06697d29f27adcbb244863049d06cac70b5ae41f82a4dc69c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2421091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9658192efa90a6fb5cf0ccc74ce0d1444c94b2633206d44090321bc3af88ea59. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARC572312385.
Sin Pagar Renta (feat. Conjunto Nuevo Amanecer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57651dc34a4fceea3f02bc973b1d0f89f2b4fd7efa20d70448cc23f64f9290e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARC572312433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0a75b0237ed6a3f9ba896944810091c1687898180319e595c9be2eda1aff4e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2401196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51ab641c851deb5997fd742cbf9b87a4f49cd5d2db2ab4cdd4870c9a986b6eb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2429407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf358bbc73fa789ad13619f6276f7a51b6f2e186a16a6574c4d09d61b50a1b4e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2510371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8207669cb9282d78581210c09eb80b26835723e9bec7d4f896029c809ece8894. 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/BK4DA2510376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68d1f5b98911e7d62f905429223ba3d6dcab4b2b8176adb3016a9c5943eb3d4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2510378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb6ef11caced2d67d68d43e28366d5f4ba808f0a708e325b01951269fb95d65. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2510382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0358ea167f090bbf90683b9d00a09ffd70094b22e3e34a5afbef9752848cc2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2510383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa9ea6817d7acce79eb693220479ee1208cfc0c2572b18a5e42b04ce3b1700b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2510384.
Si Te Vas & Algo Bello Algo Bien - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c15b2d95aa00cad953651de56d5da373304b870403d0bc7abac9b97fdbfeb31. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2510386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c71ff83ba778e5362ed6af5417d30eafcf8f46e07e380aaabb81e3455951da7. 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/BK4DA2510387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb084bfbe3c2c6ab07e16173e1765b5ae2f5d2e3f125e69f0867b5c66fb8622e7. 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/BK4DA2510388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ce4158f7a17d96d72d190c9f6d9fa94dc3b3562af008a55181fbfea202b7c3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2523121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0da62e1f8aff6f1f60569399d75e2cd9ca134104edb1b13a310be8632ffe754. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2518835.
Más Vale Pedir Perdón Que Pedir Permiso (Tribal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e6e55c396b15f35c03fec7f83fa1c65c292de6b4432be98c812e38c3770014. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2516122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495e8d1ab3453f0e9c465d6d43e5b864e7c543c244cb2183c7a97497fc60d011. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2511799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76495b4050fb8c4a3af056c7b84d278132bda46352fce14c73f5a000a743fd9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2507700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3416771e0749b138ca26c89d1b4809acbd62b4a5dd1100446bf508a9b201b1f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2456530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5a4508f77a37f98b4f3295fd8fd7de7ac8636b30fd6a98aace82bb51db3a6a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2462561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8075d4af585c257e8c69252d716a7decfb6c1927da5b03591053ad0199b4b10f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2455776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528b935263a9ef4ee3ff0b66b66225dc6ee6a7256ed9184ae70e0803198c409f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2453597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a3181a1112c0474aec6f5e433f049ab6c8bd8fc3481b4a8d5392e0b20935b6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2450336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7b7793fbd77f31f6d8d548cd2174d0e2e51413a1b3b6590acab2201aaa6b80. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2437060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455030e7ea276bf97d51d8e80aa3f7d84e190c175db134e8b7a3766dff2ac1dd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2442211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58937563891f3ba2e0e89a762c3f09db36768a2502fb9812bd296aabc2d1ea0d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2429244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b99d6691fe725d3013df9853efb00b1c31fd69a6ebfb34a1dc8bf7d55c4c35d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2425264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d1fa04e1edbb7c6f1dcc5add93f4fa50f553e7b4c9342d865f2578a1fe8815. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2416786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc683ac17e2e058f4401a954fa004ea5eacedb45c03be8caf166b333b1fd9d079. 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/USA2P2427149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037103ecb92d53fbe95f43171eb72670d7535db5936f0bd1eb01f0486d23ef4b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2409324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf562bc33d1e651889cc6a1c29c4afe7722d1ddfde178b8356ec88290538badb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2359527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a59f392f0c72bfa2808da049e83e049cccf10cf43744e54447e9855154c938c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2357780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6a41c841a7224a6edfcb07b173dddb776edb73217281644e1b7c3285ee27d8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARC572312453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1aee56e1be1272ad57213295a96c6c262f0d264646ccbd3abcc25559f190f64. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARC572312414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3aa74c44b55213db1b42df58231407a493434239abf713aea3d8e6752fa0e3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARC572310377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6030d0cd9f8cde053a04f951af841752f1eaabd62f9c39ea5ca1139119646fc. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ARC572312358.
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 0x4eb6a74d15ba61fc9718d6376633d0b68372475afff5c4c702d37d1e0abd1086. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARC572312356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa460d7fe82a9726786ca2a637e39c271147af5417372bf4590cbca7e690fd69b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6P2336467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17f981d5f2492073b2553363615da8546b9389ba20ebb9daa8bc5a6f402461a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES72338711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a371e9b9a2936a4fd353f56ea8a5a76b9a947a29f2cb7a33a53d6971de777c7. 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/QZDA52377025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce67465e6d234352ca655590b11e1737613f8c3abe3de501123f717f03dfde4f. 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/QZMEQ2244691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6db79dd3171d12ce455969db795669ecdba66634aad7b53950061d61c5cd86e. 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/QZDA72283181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3821d394ffc25fe89d936c865afd24b58e15d7b7fed5d8b78716df8e4372d577. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA72282648.