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 0x1812b2e19b177232c1ea1ae6e6c4e23323121e72bb06d436ebcec193f1c0bfce. 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/76397ab2-4c00-4743-bea9-f6b2208aace9.json and https://artists.proofprofile.net/proofs/artist/76397ab2-4c00-4743-bea9-f6b2208aace9.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 0x9efb9b17ed72691653d72bfa37f9a4a860d40019dfa4708cdcb91722940618b1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR2X42338051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05af55a624a7e0f59aff45a2bdc10cc6ddeb109ad2cd8d4a311a5c6fc9e5290f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FR96X2328681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62390c16553bcddedcebe9fbe5000eb510f6195d3437570fd0f1fcf21326b748. 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/DGA072389601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf028ab7027782162961b2e0d7013790f30668218a8fb2f349a6ca043c040e93. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/DGA072389603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3896ad7bdd08ed7002fd579c8416a174ceda5ea3b58a840b127ed993a4abd2. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR59R2464012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3232a1b93db87c12873cd2060abcd0f99b518dd3d15fd07ac836c7ca377883fd. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FR59R2470614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e160989a5e1e4eb3f9deca228fc504d1de2deaa3b9e9485b046f06602175dbc. 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/FR59R2470622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39718b69fd52e4ade3b3433e5dc22c2ff155bf6de161f10fc31ad591f258d8ec. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T11:06:14Z), 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/FRX762401203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d518f9e54974c4e598505179a7a75e70567ca3918e76dff856a4a1bb379ba37. 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/FRX762401205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccbe7f5642624b6be76c6154e71e3fb8f71a59ef2a713f7e56697e2a1c2378d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX762401206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be40ebb8a26b53e1521d01114f7b5a2dfa4bead201beff19f76b9e4bcd8393d. 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/FRX872459516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ea1610063bd4b0a6fd85cac402d017700e4038a7c3b38e978f53c6be58ac2b. 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/DGA0T2441394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4592b358139b37b646104d87e1c807d26bf6176979b166f42af4f0a9ef6c79f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:03:54Z), 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/QM4TW2559806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35cb3be72118bbc4653ac545b022b7fc640783a9153e73c83899b325b4025e9. 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/DGA0Q2411898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5356658c5b5ea45eaeffb92f86c4450a65e2bfc04d22bb4672d8cabfce1b365. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DGA0R2473031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeceb5c4f4b69d76acf90d15d08811e7710405d1068c3896aa52beab3e1ec9d5. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:31:23Z), 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/FR59R2525435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9c726367e24cd48eaca01e608880e81196ae28c4b989d4e4bdee5c74ea0aed. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:12:00Z), 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/RUA1D2587893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2814a931998cec8cf972d40a66a17410b9ad9bec086ce905c5bfdade87f1c1ba. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUAGT2509500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a54bd1a2dc5c5d6c2a040a3e92dbda0530b26a3eae8bb765ac5dace2d2d77ac. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:53Z), 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/FRX762591719.