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 0xaf4d54a2a05b71a32b0e476f0368679fd4a25068c7d9f6823f479e227f0c3ecd. 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/f11c21d8-666c-4858-a8d9-232cdb79471a.json and https://artists.proofprofile.net/proofs/artist/f11c21d8-666c-4858-a8d9-232cdb79471a.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 0xd48ac8c54872383443143c195f076edb0f9a02ac7c3fb5a01e15dcea7e5d9e6b. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZFZ32253135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39255184f717052cd9ec6274da4699d4fcbc52ee3801e16f99c7f731fd4a3239. 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/QZFZ32253137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36f0e3642a73c8407921548e5513e0e360c7632144a19c0f01be4c2087d7e51. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZFZ62251670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2100d5aeb50a0ab495429d721d344ed137776968d346cedb3389dfc743cfb389. 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/QZFZ62251663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36390412f795d00ca21a0d949d00f07758eca9b1680d00f00e93ecdda9ea874e. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZFZ62251666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dcc7771697922101f228edfd6d44e21c6f838060f27a31b6daa1195cf0c091. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFZ62251664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116ff693b4652bf75e179d6059f6bb974e1490f81f5cada327bb1ca83f7010b4. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZFZ62251668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2b08a84c2b13a28080b0e5982c830fc9fcb5a5dbb6537fd44f96f7083f0e5f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZFZ62251667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93cff04a468e0b57f64c59ab1cef48aff558fc2093add9d2ff3912066c54d16. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES92205379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b469e3a1e6942e4a7909cfab7c76c4277bb8b83fe19216ae78349f379f2172. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZPLR2202212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefbaa967b4f0957af91a0d3f19c23d58264af1f3cc0ad7972f73443adfa4ae2. 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/QZTAS2261037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af06f5905f2c85dce54f89dc7956f377b50fe9dea8555995f2ec7436cdc419d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTBD2313421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f09e27c730e6006b9f596e76d008515ed91f386e9a1b5d63a29128646734147. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFJ2306852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064191f09ed4cb44de1ca78f5902a40c332378e102bac16a54609f7cafc8849d. 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/QZDA42482115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57548b3e1beb9bb83102acd32e8f18e2612abeacfec57c814d70a108e3489256. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/MXG382100483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e82960520a6585a872b8f025d049fdadd2f7688f4e0e91c74cd87cb1ac92c5. 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/MXG382100505.
Villancicos: Jingle Bell Rock / Arre Borreguito / Burrito Sabanero / Noche de Paz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d93e27e96881cdbc50641346560f5733c5a1456335a43ef7930afd25d33db1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXG382100520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6036deb424eaf5d789c794f415c7c3c1707367991dda4661c689eca8993f2816. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/MXG382100527.