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 0x51c696630d6e1e984bbf8a03b16fe4eee1e5a7793d9acfc06db13802014fabaf. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1a723aa-3aad-473c-8033-0b0c084ea1fb.json and https://artists.proofprofile.net/proofs/artist/f1a723aa-3aad-473c-8033-0b0c084ea1fb.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 0xd05496d31c9a21f68f98e23039fff7de45f9c0655166f3efc5b2c9d3bde198df. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZHNB2441798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cde1777321771e7ecaa4780283a726ca32867c8e98d2d40d38a32920f466c07. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/QZHNB2441800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340b50479fd19675356c2b7d924ea114ae1fc42c2fda67350af8b8959e1c1298. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZHNB2441807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd588b5fcdb930ac6af3a68a50bd204a04f6a71728b0c89030f9808a36b4c6c81. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZHNB2441809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab53f3ea93559cc70546f4d78195c874b62ccde093aece2882ecb306b3086f8. 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/QZHNB2441811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95aeb420b8a21ac4e5b7788e5a0fe51b2cd08946529f5fbbdf904cf969f1adab. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHNA2486943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367a65c49fa700e39eaf54d5be17a7d8fada412f29664f7ec395a498dbc9df3f. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZHNA2486945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66342998f71758af38f5cda4b755a86eab003ce83f6ee71b26ea1f0053812030. 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/QZHNA2486946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ce9bf8b17099a0e6904301e2901debc67512ee5886b1541de76536cdfd52b9. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/QZHNA2486947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8997c415f75c67377e58a55773757b2b9b832d9252e3f7e7983567fb6ef80b57. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZHNB2432264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b318cfa99e0843754439062f59b71664d70f7858d9c5d0b08f3522721a212f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHNB2432265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6c1a6dff9bc202492ebd1d8356315e8527404d0a70e0157cec3514f90608b1. 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/QZHNB2432266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a879116f6800dd77c76d4bd468f5a91e4348298041b2160b5ee20227aca0740. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHNB2432271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524a6279ec90c6d3cb3539e0dc4ac226fe70779e7a5d2991013258979ee4a71e. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZHNB2432274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9330afab0f55cc667cc9da807d7cd3d25e36838b74f7b671e25bf0d10fbec66. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZHNB2435581.
Deberías Aprender + Adiós (Edición Aniversario 10)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be6d823bee4d2cbf8ae2611a3af2e4ffb1b5a99f22403e85421b98a9ad30f32. 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/TCAEB1917056.