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 0x1790cdb013475ab28cf00c3c01313d46c1c855cfd6da401594b1b6f8c42d36ad. 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/df8d1a6d-ab18-44a3-abee-0d103e60db7c.json and https://artists.proofprofile.net/proofs/artist/df8d1a6d-ab18-44a3-abee-0d103e60db7c.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 0x64f9058d5c1423dc91b9c0e4700ff29444361621d0d8d21ec286a50f9c257d51. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/BX0C71800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a91c7f586f142957fabb1e3910f3981b30cc48d8c0739abaeb610b9b7f4d64c. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/BX0C71800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef6e756ae20fc68d14f562f6a6945e0d82c2461383203ea2a95d609b7227600. 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/BX0C71800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5797c35eec3a4dca2ad3fe0e162c540b1058308365ee8caaa63965a773e4934. 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/BX0C71800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72ee7953bd5ed36bed83d94bb27dbedb4eeb466aa8f0d90b6b1c6ba94a7aa23. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/BX0C71800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6650acb3bdea04b1a8c27bc4213cba8ec3d5c157c82ff23ef6979d0308c27aa1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BX0C71800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cde2f3ab64e100b4e9e86e2037f53048ae134479f3ba653f5f0622dabf9e26. 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/QZNJZ2421705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d085f2329987a4f124f798b3cdac5e3477ab381a449cfc12e05ef0dbc8f6903. 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/QZW9K2414520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e79dc2d285b3e19efe9180a4617f451ab6a3bcfd352d837c2c781c663bf2ce. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZW9K2414521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dbcf9fb754899c98908f0d05b161d53796a874afbd00e259986a2518d62c18. 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/QZW9K2414522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2017a59e8c06e6b2be7831eb2f0fcf0aa69c0d18263aa2daaec32d8eaea621. 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/QZW9K2414523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c31d7bf232d49fe56463a8da538fe286084cb4cf5f6291058397b1e019323b0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZW9K2414524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca2f30b57b3804a3b5fb1398a16571b0140ff5c57e8e8d154dab3e44d46e6c8. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:24:34Z), 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/QZW9K2414525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc745f62650695464f00bc0aa59b435f793e717a4f9c4091182b170ab0a3563b. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZW9K2414526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9d9e826d897bab0c0f06278a6cccfd5bd87340375dfc47085d03da72814c0e. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZW9K2414527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df2e2b2c66bc8f31901f1ecd308d425913d51fdaae23b780be78f37f32b2d57. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZW9K2414528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8084f8e57969e9ac48198221f6156b9aa0f639710f097a824550950fec19c5b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:58:28Z), 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/QZW9K2461747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d86de1340961045432d56f263b2631b3b24adbb6a5400c530621a5825c01c0. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:51:56Z), 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/QZGLS2540433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b34a0f9c6bb761435aa5c1cf97855510c32eba180df88070d7abfe2db6abc88. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZMZ92501534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafce6ad0a1079b7fc37d3421f8e52ac0873eef44b955ddc1db2738e38efa1b3. 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/QZNJY2501872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4451b115dac3f8c2f5fffe373740227f5c65d85ad7aa7818287cad87be29ac. 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/QZTVM2589314.