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 0xc43dfe37e9a8c6d6f7fba23a503e12a2f58e1709b7a92fe19d9a26b42648056d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fca697ed-5821-4b81-9546-568c9623b6bb.json and https://artists.proofprofile.net/proofs/artist/fca697ed-5821-4b81-9546-568c9623b6bb.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 0x1f6d48d2484bdb547b84f0a4e04d4a95acf36167839ea50b32a534c3383febfa. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:31:31Z), 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/UKEHQ1601001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ccfbe0a24fe4a1466d56cd9ac91765c60fc74795cb95782188c54312dfd0ad. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/DEA451801270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3b3df775e5b522704017315864694e2bfec12afa8eec83d491bc1747fbdde6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEA451801700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b89d8c63c85ff015269181933c426227e085052ba4d8c6443edd37830c70b0e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:50:34Z), 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/DEA451905810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2332d0de37aec03246dc5fbac2e024ec825f9556220e0acc479e7b262f733b1e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:19:34Z), 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/DEA451905820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9108c66c5c7b8ac63290470f3d7302aa0878ac9997dae8c722442f79844efb80. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:25:37Z), 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/DEA451905840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76382b938bf315ab3b2db0455f543e5cd52761419379ebf456812cc9c03562b6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEA451905850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd9be08664db7528e747ff777433aae9e76adaf28595319f277792e294f6708. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEA451905860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f4de070a5f66721b2f8f1f87763ed838bc51219b3ffeb79cac423354402c75. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DEA451905880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833259f5864bc691c2323fce6de17a6c942e68c3394a6d39dc0f497ae300e8f2. 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/DEA451905890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd039c5d2ae2893987356b7b443a004acdf311e609f8a996a7d8804f194479d2. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/FR33T2369706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d50be2d6584e9ada98b9a026ad8ac99c97eb53aad9f80e2e2e177f78c0ae3ca. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/FR33T2369701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b22e806b7c3d8911ca6a56ee4460d76f40d864c2e08dcf08d848218633330e4. 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/FR33T2369702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c54f1be38c14ed884235b7e131478963be5e5b9476d1e2554bf8a309a3421d6. 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/FR33T2369703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b82d4665aa5740b2eb67a12390ac4e652eb660dcb200db9bd25a6711f93c13f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR33T2369704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71911d02b04a910e9c8e3549dc9923927ebefde72a4873eafc0126af2df8fb8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR33T2369705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaa75371c2823dca2b21b7855fdfd61e9ca15a9f3f022e552e0b1f450e9c133. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FR33T2369707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ce1f8ffa98dfe4f0481652ef00eabb671a0694160c10c3b2f8d40a4beaf87d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:49:58Z), 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/FR33T2369708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f225b0722de18332be66fe9b6da78184067d12249daed8a1eee897e058f49b. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR33T2369709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32376f9ec36df8ed4be043a2b844df81784a6d03abe7316aac270a259baba7d. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:36:23Z), 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/FR33T2369710.