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 0x6b973ef17af80de6933753dd2d6f2106978c3890c64568a6c5cc7b1ba3db50f3. 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/7b888a01-9f15-4964-9eae-0597fb7d775e.json and https://artists.proofprofile.net/proofs/artist/7b888a01-9f15-4964-9eae-0597fb7d775e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Novena a la Virgen de Guadalupe/Novena to Our Lady of Guadalupe
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 0x687a5eea8a65afcb9aa3141521e41ef132e4c04a5cdf348dfd12fc52eb33eede. 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/USA4N1400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b059c73c8729bdf25e5cdd670697e50090821eb0621cdeefd4fa3f00f97fd4. 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/USA4N1400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c07c6ec7c644598e235291b9bcf4a8e05406b8df8f33fb95ffe1a6496f1510. 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/QM6MZ1761208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e664a6d2722dd4cdd23509439e9ae16534b634430a779265fc352d43f9de06. 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/QMAAK1696851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a78c6942e6ea91a91c8af47510091b39458ea4663cb6962ff3d1aca3d11a98. 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/USHM81388108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b514d5c4c979b3c3f4cd6618a775cbc47fbb6e535bf4bb1d24abbe9a96691e. 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/USHM81388110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0581546d656a55482b2050cdb4aab4663f018022a6fe61e7838f1c3ed3b8e0c5. 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/USX9P1098787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a15237fa99eb041285f3551f17bd26832b0e7337362c2858c7ff746bd5bfc40. 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/USHM21033823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ad19db4c2f6a0e012dd331758e22a08bd0b8ca2de41a2b7515d9bc4c5fc457. 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/USHM21033824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe823646083a5787084624bdb1f6ac8a11fa3e3e3a8c492a7b14c5e43cfc17d04. 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/USHM21033829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1751a746e32dc6b379bb0c0f9be3eb17b82e48be79b244475e32487006304d. 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/USHM91301254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47485519a0edda5fa0fdfbe21ee3aa0b2dc36e442aed69231267143d4ffc1461. 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/USHM91301256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bcd7b150a9cd4668e5fa3adce053e9a482866da5b178d6449788a661d1b946. 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/USHM91301257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4d08ea17ba540be968c5abd9d3625d23db0e1d18601ead523d02d6dd5f2b78. 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/USHM91301262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12578d1c1b6fccc710ba01f22af15b32b1c3e9fd887a577f5967365a3b8a0cac. 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/USA4N1700378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7f21d96ee52011dba88e65bfe449b7df5a0afba0407af2366dcf80320b6646. 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/USA4N1700385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8959987c76a81c58c8bd445679ade7afbe2db414cd0e0c2423b7639e02dbf83. 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/USHM21540117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2cc53ea85c17e59202ffd630eae455e815f457e18dc8eb877fc0a730cdf14f. 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/USHM21540121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe947392b80936b8eff296c6d66f2409bd3c5341f978a4316d5768ab8415fd190. 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/USA4N1600751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7370fc574bc8f65f8038ffeac0e3d13fcf5195c05b14618549a459d6735a51fe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6MZ2206253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1544b29e49c7c0426c79372cc87d2c0d966b8b3305ab7ef8358907ec59eff0. 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/GBLFP2194555.