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 0xf72ded6272d131b5fad69c567df1b6fbaa1bbf298cce8572100348ba0293f802. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a193ef8-3756-47f7-9441-6d22cb839630.json and https://artists.proofprofile.net/proofs/artist/9a193ef8-3756-47f7-9441-6d22cb839630.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 0x8b189ba085dec195ba2af10881d65fe9eec3d4e20b9e6c3b3d75aff4255097bd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PYC842200235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92630a06b988196ac19337e7ad9d0ab15e8afe531cc5833627a84bd468587b6. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:33:10Z), 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/PYC842200208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36197713eae4950441aaad0b62049672c10e56d2db6903b8d9b79bb70ea34935. 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/PYC842301813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82068f46121728e9b918c6ac2a725dc56e173c695d40a6a386fbca0b18fc2a87. 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/PYC842303893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0b968e19a0069af13eb138e1d431050f1f079a34ac8a0b0e644fd56c332ecf. 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/PYC842303895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe10f0d1539e31bdbb2ba20af3505fde6f66b5e9ee5666bdd2556135086951bc. 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/PYC842303897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb95939d06fde8526e8a96ac57ab5b825efd4c73b8af6ac494a7b4f803dd3ef0. 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/PYC842303900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d66e88fe7a758303f81371655ab2e19e9e866b79d629201c704c5d7f8b0c6be. 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/PYC842303901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe004387ce477bd17fca6ec0445cca81df28c3b1be899838963140dbf339a75f3. 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/PYC842303892.
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 0x67e1890b00f4f25b4dc5c2617e4edba53ff056b2450832e41afa739d612e8c41. 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/PYC842303896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f618f5dd06c42685ac5df7e6974129587b87017445c9701aa30eabd0d86f56. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/PYC842303898.
POR ITAEMBÉ COSTA CON RAMON MENDEZ CONOCÍ AL ABUELO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb011ec61709ec6f068b4853827d7ff0fc19f3cce9acf4293ffbd59cce7b63a9. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/PYC842303899.
De Ciudades a Canciones Que Se Hicieron Ruta, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0c8e1c190bc76883b946441594da878f2e8153976261aa6ee2c06b07f35bd8. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/PYC842507985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca475b9403b918491efedce9dfa07ff7301f3e9d17531a38262353aac0457930. 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/PYC112300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec799600d85730f7fbb3e41ff280936d5a026ed5d3b97e1d7466ba4e3458a50a. 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/PYC842503839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9b4223d9e36fca726b7ec58af9a167648b91105dfa016db7028ac1413134cd. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/PYC542000012.