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 0xdc38a1f840dad889949c6d8782590cf0beec0540443d7766ee8f70161aaeb367. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e01317cb-12e5-4bd3-be61-cda39ad3a3bb.json and https://artists.proofprofile.net/proofs/artist/e01317cb-12e5-4bd3-be61-cda39ad3a3bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Wave We Thought We'd Ride Forever (Live in London, 2023)
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 0x36d18f23034580dfa3b245019472f7abf6a6bc676854a047a73e7b2a5ed3e453. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/NOWJT2501020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33674bfaafec54a0969ad180b13399feb0b4c6ed9be4db205f5a6a102e2acd23. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NOWJT2501010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d18f23034580dfa3b245019472f7abf6a6bc676854a047a73e7b2a5ed3e453. 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/NOWJT2501020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e2017ab7149798644a419ed81610d793fae8db48705b953e7859e961fec229. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NOWJT2501030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d65c0dab40aaa3adb270442f1e870c0359cf9e4b8a49d44d0cb894923766d6f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QT3EZ2433825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d07d646e1acdb1ac0e43580043445ed43842f105c12a9ce06278c9d26612e4. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/NOWJT2501050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21b942dae251d345f7c93f8eff6ec9fb7c36e0722fbc5db1dcb7d1b79d1a673. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/NOWJT2501060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616377b68b9b82ebcfd91d92209e500bd22a39f0f017a1180f7fda40195ff366. 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/NOWJT2501070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01810d6bc5f26285c8c8f58d3a63466a9bf82d5ceb7c5cfbb07d91f068628510. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/NOWJT2501080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53c5a2b7d7cf19b9872356b8a52077e626dec1f98bbdb5908005e5385c8464d. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/NOWJT2501090.