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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1c798abcb70524fe006bec9d3d3ef2e1f1711a52d631dcd70e0406b9beadff. 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/7a6404b3-236c-41b5-82bb-aff4e8d96f05.json and https://artists.proofprofile.net/proofs/artist/7a6404b3-236c-41b5-82bb-aff4e8d96f05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Don't Threaten Me With a Good Time - Single
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff324672f5ded7f30e277fc0f5815ae889c3523a7c4e08d63dfa5563b8df07f5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QME9W1600080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c150d6a9d72772ea6a9b525b8341022adffa407acdce01e058760d3691670c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QME9W1600081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701506db4248e24ed58e2912bba37b7d8bbc7abf0ca465e43f0e88c087abfe8e. 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/QME9W1600082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa50c71763698c2e8c46ef6100a3c2aff7bb66c51d6358bd7df32d561420b4c7. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QME9W1600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c6cb492c49ee956f68473726d7d623c61bc17f54da6f3102270e48c7dcbf51. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QME9W1600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c813128c1b5fb79c54bf5193c8d1f01f9efdb772ae515f4e907e24f840759c. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZ5AB1743525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d7bd8eb5e732cf260aa31d8b3ed0c5484efaffa2671f60a63058b00fd0610b. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZTB42274877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05aeb9ecde0529d5cf4d1a224a72f8db6482e5aaa4881aeef7342bfa7c9f502. 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/QZES92324073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e7d1910d9cb27f40a96e74ecd53cc0093da0930ab4f4adf47add0483aedfa5. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZHN92499580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d7bd8eb5e732cf260aa31d8b3ed0c5484efaffa2671f60a63058b00fd0610b. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZTB42274877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05aeb9ecde0529d5cf4d1a224a72f8db6482e5aaa4881aeef7342bfa7c9f502. 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/QZES92324073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e7d1910d9cb27f40a96e74ecd53cc0093da0930ab4f4adf47add0483aedfa5. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZHN92499580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c53470992730090565fe9447a48b77caf9d510f2c29a63b1f5f032e364d6d2f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QZPLS2409274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f96edc5af65fc2949ba0960406a5dc55e555b4cdd13d3168339dd1e1ecb1a2. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QZPLS2424444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b94a05eaff3ea03f8bf64018c55cc81d9fb4ba3cabfae55d021ab071bc46e6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZPLS2424445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17af7478d110a5924b90494ce50230f9821d9f8519c94a80c228dd4ab552a552. 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/QZEQU2300118.