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 0xb8fdcaa02310985f86869c9df048ee001849c4449c02a6fe0d9947e717b34675. 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/f897a155-6f49-4643-8a85-025132029660.json and https://artists.proofprofile.net/proofs/artist/f897a155-6f49-4643-8a85-025132029660.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 0x60b65626a878269900d778bafc487fe2b086c509b9a96e8d6b99e653bc5233d8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QMBZ92321559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59b2303c1cdd5fd77dcd0ad8b38ec7ac29512ba4a240ae4b21acc76b55994ae. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:29Z), 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/QMBZ92321569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc9d1d635b92efc29e0bcbb6332097146591b445c5116c026730c654254a8fa. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QMBZ92321564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6435cf0cfa16762124f6a0effb1f261fb141baee7caf9e439bee7457b15e1c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMBZ92321568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb398a9d8f93df0ceb1923f5e418ba71af5b9e41dcd78b0f93f9e2dd3a53ce04c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QMBZ92321571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1816b0a704d1afecb7b1e5bae730c5e25528f289acbb2acdf45312b24fab4a5. 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/QMBZ92321562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff841680d5aa9216cae7066a357af733d777ec5f8d66d46955b349c682b8274e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:59:02Z), 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/QMBZ92321567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cea218c2d4701b6e60fc0310569a98c7f0be372ab6cec73b35a1b81bf3dc34. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:42:03Z), 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/QMBZ92321563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0e048f02727b16d4c648f91635c0eca5abcfa0d4453c50f78566624650569e. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QMBZ92321572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80691772e34361de492f3e0a2255144ceadbe487fc4c96a4f078cef9baa11c1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:01:01Z), 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/QMBZ92321570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1374f9359932ab4d37f7959fe020524cbee99435af7fef3b296fed50836eb5e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QMBZ92321565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb340f8ead59368458b3063ed53462edb2cf472db698c6c54340ac076208e95. 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/QMBZ92321573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ec4607b5288b8ad999304f090fd8fedaeee987d19e9f7ff6948de71478c5ac. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMBZ92338748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9925e085420d06fce5cc2e80e5e3f58a18a769cbc4cb8e90c0a4ac921400d796. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:35:41Z), 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/QMBZ92338749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf428bc9b858838661b6a67e004a011516c3599aeb19e710a15adf7eb201063dd. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QMBZ92338754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8491a60a7ce6887e75942bb343b111ca6ef173f8ee74a1bc7b6d18b8b5fa13. 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/QMBZ92338747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f64bea722c4e05f0ce440cbee84983aa0dfb12f4867d56008daa989da4d371e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QMBZ92338750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf224cf9c6fa16c8887c1e85dbfe723349c6de882e1c9b18172394efd87e1f198. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:29:10Z), 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/QMBZ92338751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f60165df9a40d48da4e8670f53eb18fea70a223fecb8386cc7db8b4a64e330. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:53:26Z), 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/QMBZ92338752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c54ab7f50b1db081cb0c5a386b0271ceae3da285f746abbf57831743a14c44e. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QMBZ92338753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2411712f4cb60efdc03c59481b37848b3faa512148551ce7e6ed4bb76decd66f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMBZ92338755.