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 0x8794117144e77d2a7ac555056c12f0aab5377ab0e3ca6f3af2c1d8df684f45b0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6aafb33c-66e5-4dfc-a82d-0401c7ad24bf.json and https://artists.proofprofile.net/proofs/artist/6aafb33c-66e5-4dfc-a82d-0401c7ad24bf.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 0x4bcbfda59a148d4a070d6f8759545eba7e549a0eb63d9d3a8490ccb1d32a346b. 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/QM6MZ2406960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52022250a1d164148addcf42b75869015eed2f4935d9bf9ca29c363f0a8396a9. 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/QM7281585582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747228bd3e91a99ad070aa0c0ebf28535d9e7ec9cb25cb5afcc4a065362eef3a. 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/USCG60810902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f8e456e8ec6d7d8f42a9e2cfd10f82d5ad5fc41e7331ac04253ec5f2f5fb44. 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/USCG61550200.
Mas Que un Anhelo (feat. Marcela Gandara)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07376c201f7d83d937ad7a7d6179bd9153ba988cadb6a9d68fd1b2623e62da0. 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/TCADA1708326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3392ac259bfb630210961ab74b41c9a5b5069b2fdd9439b2feda39e7df58c5. 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/USA5W2000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa056bb1083dc63bcfe4aa0dc0b0f004a5d1e95836dced005f4d1f7f4ee896b97. 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/QM7282475242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625553984be1992a6f7ee10ac424bd28100aedc6e971aa7bb61ab2a0ac9a259b. 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/QZ2J21507212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef44f58739b08a9933beaa5dd2721bb8d726b0b31eadc5722abbb2e58e12569. 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/USATJ1205507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a88885a0a557c8ae8ba907f8b37aaf611fd8123ab4814d614af125b312e8ee. 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/QM4TX2219962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d984355eed82db81b1e89c05a2f47b4ba2847683507d06ea6dfa48198b76536. 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/USATJ0501512.
Música Cristiana - Adoraciones Cristianas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde54983e2703ed9c38ed648b723dcb3ee994a09ab5f0728b3d0d177609a310b. 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/TCADA1749299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde54983e2703ed9c38ed648b723dcb3ee994a09ab5f0728b3d0d177609a310b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCADA1749299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f99c8dd27dc1a419e0f8102a0d2af9c0c2b863fea78f851d09a9d4645f495e. 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/USATJ1104404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459c4729f8e763cc6fe04e90f86658e4a7603589658adaa7194bec2c99108498. 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/USATJ1104408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ab3e694b8484806fbfec7bb6648442320d17a94e9d6be2021040d1949e2468. 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/QM4TX1617572.