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 0xe5cdb3add5669f78ce73c57995fa55cef9c8746333b8558ad939ad016fb5c4a3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10456b4f-425c-4eff-b46a-bd17c9e12e0c.json and https://artists.proofprofile.net/proofs/artist/10456b4f-425c-4eff-b46a-bd17c9e12e0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Historia Musical de Luis Felipe González
20 Grandes Éxitos de Luis Felipe González
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 0x31787fb43e590ef736b150ab594cf52dbbd34fdcea7341ea262510b91fed4108. 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/COF019701218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fbb2b02c7feae25ad6fc58d1fa89c113f97239995ac18e864acec743c2b16c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/COF019804495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5001d86fa122d4f17a29595f7f0558769bcb3a84bab2119e0a7d08b1a66e73. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/COF019804483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41295e5c1caa8fe87b427363baaf213795504b9d2e370019887c3213de804d58. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/COF019804482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489792bafc58baa63d74cf5dcbbb47a1100a419a4aebdabb576c7127afd7c2c5. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/COF019804491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e580e27b5a4006eeb64d402a83f8005e75b7c11003fc35591c5f691e43a2e4. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/COF019804492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057dc7ed663a66014b74e342d9e848d52723350894b49e3f833a2f7456347cc9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/COF019804473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd5e434e35ecf640009d6c42bd265bbd13a69ac8dd714b8024c521a81c3a8e9. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/COF019804853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5740c11ba1742f4dbe1d53e1e0127dc8c952a8c1a7974456881aee1e08bb80d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:20:45Z), 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/COF019602075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891c945e2305a2cd6b501af1697d0409b7a3751c13c0ebf0bf2de23e4a012c1c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/COF019804490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5740c11ba1742f4dbe1d53e1e0127dc8c952a8c1a7974456881aee1e08bb80d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/COF019602075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50998f8dbc3f2989237779f852ddac741e329e63bda6c6cb530b7bab2a99bf7c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/COF019900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51018840754a12f969431c6197e66dd999333d7cc2ba5f0a2c8f8b90e1afc3fd. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/COF010002059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4125b3bdfae157bacb327f7b89f1f45adebe393c789b566ee9d85e89da9170. 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/COF019602080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63227bf7a760b5a6510531b36e876c420cc7553a1d2d99f27c45cb44cc12c5d4. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/COF019602074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d6dc284d90cc8943c6cd618d39e52c089a0ba1f0a14dbdece7f3ae2545e144. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/COF019602087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611583514fb9b8a75a00a05a221d3ad43da726bfa05e19b9874323854632aba4. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/COF019602081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8860f0c1d97700875bc811a8ea7b5398256a4e18a61866d50ac69e612c43a23. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/COF019701214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4baeb33426c60ee18604cb21c07e751a8f4178fd62a98dccb0253ee31292f8d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/COF019602079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1099cdd09ac0bd26e910fbed9b4fa1c5f7fc6fdf008299514f1e55a8212e3795. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/COF019602083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1211888e6788301cfdd7ead5b97c84ea299ffbcbaf32cb3b6df9ffc81057d4bd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/COF019701977.