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 0x70a03ec738b39dbadd89704a1159daaa48ab768406e25f2104a943efa8ffbbdf. 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/62099339-1d1a-4412-a7c6-f43964c59529.json and https://artists.proofprofile.net/proofs/artist/62099339-1d1a-4412-a7c6-f43964c59529.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 0xa0b873d2aa550fec3f86d11540f15f0deffc1c8d0a5ba0af532779e726549bae. 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/QZKU62000489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b873d2aa550fec3f86d11540f15f0deffc1c8d0a5ba0af532779e726549bae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZKU62000489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5d1d6b990b004eedd17dc63f62619c7ab960f0008e22df2035a7b32c8e0e55. 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/USDY42034770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0c793a9e46f294e240ed55021eec7710b78ffc0ef6cadb76fcd8d01c6fc466. 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/USANG1906043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e1428239faed09ffcf0ee384209c90ac1335cfdc48b49695c4bcfa56e1d258. 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/USANG1900273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84c44fa21b598e3b9d5ba41b13810a555c0ee6b91e0742de623a7602beba930. 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/US3DF1999694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ed55d807db565e0ca75dd9aa7e5b276a12625df16c934246e119ba05705295. 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/USDY41910518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fa0535094626b5a8629cbe7a0b1d6e63a3103732184e5608a045b791660f47. 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/USHM81843926.
A.D. Records En Vivo Desde Culiacán, Sinaloa (Segunda Edición)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d72d9caf17bcb29148e2058f4f1e2db962eee1d802c59084aa0cd02a177762a. 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/USHM91906736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb479a7d4da9b0359137d5961ef85913c54e7a083a9943508a8f37469a1d5e7. 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/MXUM72101141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1a302c551aab75523aeb7c4774f0792b3cc9d067191665f09bbaadf3d8214c. 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/MXUM72101139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677e2718b5c7daf65d33381a3bd9fd9a161c490796cfb00f7ecdac762d5dd0ca. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXUM72101131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880f8dab9eaa3d3c44d4085fad4390b46b7cf0041779dc88ec631cf124d13279. 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/MXUM72101140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0db67e4379e8ec92df73c6c7d4b70c0421dbc829109d850487eaa9deba54ed. 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/MXUM72101133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55979abc4e1b876d231d63340cd6d5854a44d1395299cc2a26d5bfda49f3dcd1. 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/USUM72010003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf125df00b9225c42581ccbc7e6b2743e4af9e674226cf610a2ef5a3dc88e27a7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USFI20503597.
Música Popular Variada | Despecho + Licor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96409566fab962d21580440a99589c3bddf8cf49a4d34ced730ca18830ffea3b. 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/MX1760900074.