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 0xb3befd1f107eafa4bb38c48d5b1aac829d27903c34b897b388ee896f05fb2436. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a6e040b-4986-4f34-9b75-dd29af23657e.json and https://artists.proofprofile.net/proofs/artist/2a6e040b-4986-4f34-9b75-dd29af23657e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Songs by the Seasonal Dance Group from the Pueblos of Jemez & Zuni
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 0x4fdd04588beb8f3afe6d0e691d59bf0ab95728389856e60d3bcc1b8e6c123991. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USHM92187712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed328451341b8f6b442e02bef3c6e3279e305b2b6a2dce7a37b5047291a44e1d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM92187713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9366469f0f44c2b637af163207214dbf0781b5517d314b68feb18aa8d977f382. 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/USHM92187716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b177c4a6bafc1d90dc53ce0826ce556b79d0f97a85e4adc0b41fc30bc123c4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM92187717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0ff734c577de5b858e7c0245e3ecce5da389b3263a0e4344b6beb7d64f724e. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USHM92187718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9471dd9a630c1187a5ff60bbd420afeecf1d8301a47ffacd2959acb17602c936. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM92187720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c935db6563d6fbc485a1264e802d7e6d2f0fa861517e1a73e2d3f4242e94634. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM92187721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822d2234fe9bd8008486e77cf4d8bd1370b7076283ff45698cd003a8391b4623. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USHM92187722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdf6b4b90b0179288fc526e1d081c8a326baf80ea93bdca057b0ceb0c818337. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USHM92187723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52b4ea236dc2d4ab8d02176ab31fceda1856266618191a1198f730478a5e42b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDY42229693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9855f4ff9c0a59216f1cf3b293d8775c65ea6c2a657f309f7082bea7b9c164. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/USDY42229694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd28d39f71dfc1f7aedccd427b2a87b0d65d46418b51dab31f7abff893e7c2b5. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USDY42229695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a2a68c3edf7a47c155e3ebccb88414a5ce3de2b9768f6f9a1182c48f6367ab. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USDY42229696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa709bbb154352c24c23c9da335a713e2122b0bbf862b4c877cacf183f1aa8b0e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USDY42229697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbda1a9211003354c73c2564f3a5d108a7828b1c4d21545a007e6dc123fe932. 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/USDY42229698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055f51b97d371e1b27484771a543be0a8a322cde099ac3fb5aa3c3f1d23e8ee0. 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/USDY42229699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00feac51c9bf3346dcd1218b597453b324498072c2a210786027e7eb5ac8be39. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USDY42229700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd2e957d28a3c8cd12b11e4fbc54b815fbddd0135274bdb3742a60815c734d8. 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/USDY42229701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b9aa71258a11248b12a6f425e7286c0bf028f3fa62bf83e5134c118e0ead64. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USDY42229702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e27c1df6d28d78a713c2eb5f5e4f97ff42e9143fa27b693c3e3221235c6672. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:56:22Z), 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/USDY42229703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad02e926438dcc4075aa32ed575d4c48981dd4b1fe1b285a0adcec613b567cb. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USDY42229704.