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 0x6bca23ff85ce011da229956b6248a8ec89edcbeec87a5c51903bd25c7eea6175. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e064cad-8a12-478c-b98b-f8413c5cf04c.json and https://artists.proofprofile.net/proofs/artist/4e064cad-8a12-478c-b98b-f8413c5cf04c.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 0xaa23e3744d5186e655ae7696f8b6ca70d3fcc2daeaf436cfdf96a9c70c05a5b3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJK2569721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34271a32738149aece1e0bd0e9d9398a4d08394fe7018548490a4399e9933076. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAJK2569723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c518417ed0e440021ca18530b75f52f087f9b0e8c87a175f457772a589e00a0. 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/TCAJK2569725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977abaf0e1a9648970887e597143dad872aa300c58fc3c97d70e70a5b9595c9d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:12Z), 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/TCAJK2569726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768f5fb002a220c550dfe990ff9ebe4321ea5fc3f30640904651800c59c44757. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJK2569728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a31c6d7a78c9a87dd87a568deda34304b2b602e2effeaa5bcc1a36b285d624. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJK2569729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8758988197c59e4918493d02e9e9e96228600722dd6e11dbf208f2d5cdb9c4. 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/TCAJK2569733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e682be5fa3f2e590eff31ecaa1b6bbd25029a330bb5eb5dedb58d832c29d56. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAJK2569737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7003b600bb174269bc773892909f31948786b44d50cf37c5a37bfbc17b310dd. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAJK2569740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f32cd96040d2b30969a44e57c68e9e0a4c518807c077fa8ad6adfe34da22aac. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJK2569741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0708d592d11f392643c4981143c6e990d2d2b8d4176242a9d3ec19acc1607f9d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAJK2569746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd545006a5b287078905e9cca67505710e79c022d634abbcb915bf247653185b6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJK2569748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222d5e6df6b2f8ea4b2f492fea2901ccedfe85e165d930a7b62e7064d3d975d8. 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/TCAJK2569750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e16cae81503eeed1f1496635974506d330af992d87efadff7cf046ab0e1aeec. 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/TCAJL2569751.