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 0x21e9cf6c4be7eef7ece9edcf41615709fa55aba82c4e95e01622f590bcc1f791. 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/2952b41d-533e-4619-8df5-e7c26e87f664.json and https://artists.proofprofile.net/proofs/artist/2952b41d-533e-4619-8df5-e7c26e87f664.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 0x66d1543121948622c54ee491b05a32642476a4e93ff35bbc65909bc0f6bf93b7. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:59:54Z), 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/USUYG1447557.
sendmeyournumber (feat. Zeid Abu Hijleh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a6f4c6c355659424b2677edc10ef35fca4a043da7c97dcdd915d51b82e0ef5. 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/QZK6M2028482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd774bb6fd2ce4e79153c7e5f53654029d74f599c609a530a98dcee143667f41f. 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/QZFZ22103787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f60951d51b3e7491b3854cd80a2fcac5a74a3f9f3d20881c2b911f3ec954703. 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/USUYG1397043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8505a8576ae2e0d71438f08f4f9da2449edf9b7d4ee2d14ae586c9e86c477b. 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/USUYG1404410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f917be0862b5431d7ceb432c14efad7c90b099b8d9477fb29b84e2536ae8ec5. 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/USUYG1435771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b740becab0b880b17a79ba369717d70c2406edab1d3734f6113c06f1105db23. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USUYG1448399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d305f2b42d1f5579e4b0a51f7ccb064022a8b627be96df62c21002649e131f. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/USUYG1486688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1009892996655848b63a4fc1d1262489d69e496611aefc1adbb867400902ca55. 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/USUYG1550483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30eb68132e9ca2c0e423f8f3b2d0b6075b7b5790a57ab7ed32b9843bdaf77dd. 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/USUYG1492018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6360085428b09b802548f4c0733dab9e789bc69ab2a321bf7379ab98aecd23b9. 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/USUYG1569635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a673dd8293b0c571be062760f7ca247fcf6b02469e762290cc158812aab230. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USUYG1569636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56b70903a8d43166a61019bdd5b9cdd0a62594668959db31e06083948fa2af9. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/USUYG1569637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da001813b3fb0a1d55a6eed1d8ff88fe29030562b4798561a7521c8408a4faf. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USUYG1569638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef3432b72a463179c7a085e0831ea862c91e685d5e267536186608f06e8fc7d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USUYG1569632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b2ef3e2dc12f2ea06c372c7ba3e219ac274865c86dc1a802fed0f2a1b4c44e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:08Z), 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/USUYG1569626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a665bd1c5e931182ab4c2316786fe8dcdb852c17ce0de12f3d607d7f8fc9b15. 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/USUYG1721806.