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 0x3fd8aa40ce8cf902a7637d5f9b9269c91c0636a3624688a6ee2267ad227085c8. 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/8c65eb1f-b24d-466c-b15f-d9ed174511ef.json and https://artists.proofprofile.net/proofs/artist/8c65eb1f-b24d-466c-b15f-d9ed174511ef.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 0x5969b52227fc651999ac7379faf832c08356da44bee7e6ad945d38652d2adef1. 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/LBA0H1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbcb40f25c36de69bbc03bf0ec02183e5e07017bdd4b74b3bef814900290a92. 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/LBA0H1901687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acc6bbe4410e8495ae4182c218d820bad622ea1c3b98e366ae6e689bf4c158a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/AEA141802244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683627532863ee732011ca2e0dc9417d368598aabfbaa477d1407b2bc1a23e8a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AEA141906079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dcb4e4dc8f8584227135dd88a3ec201dc4390ff5f20cc6dca9530bc45dedff. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/LBA0H1901671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dbdc5abb69bd1b3477bc897676c1dde6bbb47bc43211dd9e8d661a17a080d6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/LBA0H2001246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f4ac85f7f5150512970e93467b8715842dfb924e21cf19235e003482d863a2. 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/LBA0H2001255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e500d12e28e0eff460b2c622a9bc967ab438c8932356cde74f21e649e8e97e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AEA142007385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab585813e4add6ceae63f8dd4314d7ea6e453ce16f48c2283222687ca8cf50bd. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AEA142100836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdeb6163f2370d9abdf23782275ea49fbef5fea3fb8d6f4b2189407dfbcf24f. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/AEA142101491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb414e61bbc0fe78cf1c5fe16572839c1756d4009bd8c16fdbb7ae6316b821a7. 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/FRX202143435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136b850d14e33906a8c4e766fdcf8e908a4ce92be1161cd7204863015e75aa27. 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/AEA142105851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15213495cb2b950d2ac87cd336423f3069d80bc089c796ff6c7b2ba75acdf8a. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:05:32Z), 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/AEA142200474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1fdc2cdcab222b09001525a62c6c4fc7b8fcfd50753381c32a6c9c8e549418. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AEA142210974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da1f1f72c14862df1e5d89b3c0111f50e6e607071833b18a6e6205db018c995. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/AEA142211317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59849a8aec0540edb2e59a35f9e7f45b8e11ac782da41054878c83865eff847d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AEA142211888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7b029b18ef47d8086c3ed11f1ec11aebdc3fe622eeb9b3c25abf41cdac0e3d. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/AEA142213405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a0f9e57714e6205bd1e124699fb56c85686ba952756d2db9af4b0534d8eb2b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/AEA142300688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd2892d6b47e4af5e2790dab3ca53d5f5a8f5024b1c19a6ae7800748ea99ee5. 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/AEA142301100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49b3a1dd3a5ea2172e61dbd86adf92dfa084b55036391ebc1e6ed990c184f2d. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/AEA142301288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2c71773cd0448b4597aa0082fdfa5408300d8c5d1b5d67ce1624359d1b40f3. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:00:25Z), 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/AEA142400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10220d3c94dbc56a2ec05e7cb7007017b330ff6a838fa070206511663f177420. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/AEA142401729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609953fecd0bdca0c5b40a5743050843366b76b9ae744baf188dfe587dcecdf3. 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/AEA142402157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255d134ecaa8db5b22ea37b5e5ca49b4e13f7bdc2cacc083466d2ad0680e223a. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/AEA142404746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08430f6433675c004b3523b5d162ccd860eea889f07ea22b96d22e4c54a02918. 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/AEA142501036.