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 0x005d70ab348993f3ca39c387d938e4b88a5132f47ccc1cbd16459584c541dab4. 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/0d8faff9-ee68-4c1b-b9cf-59cd8566b50f.json and https://artists.proofprofile.net/proofs/artist/0d8faff9-ee68-4c1b-b9cf-59cd8566b50f.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 0x280d5dae245b393fce22edd995dae6a7616a695abf206b1aff3c59bc8f5ef489. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FR10S1778237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34287a8aaefe936c21fc0e854c2356b11de7a9bedc086f56c99e52d1124dd84. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:55:21Z), 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/FR10S1783275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b25b5e4d171c14dba0da18a070a41cc129be0637cac49644081f6156df9c8c3. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/FR10S1783278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02ba41dc6921066efce34673fa3d383789668f33bebfc68f009d246c050b0ec. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR10S1783282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da250dba551765269cdcd26579d014934413d7d9e390bcb5a5eafe543a0e2d1. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FR10S1780234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95c41522d81462b3b28c2005f8b5f3cc40e88996db9d020a5e9f82693a067d3. 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/FR10S1780236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843bf34bfe3eb3b5d6cfdec052f3f6c95c0c55bd81fb4589c304ae6056edd60c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR10S1780237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0cc615d979bbd3e63efcb649b3f97feccb3b5e8ba999bd6bfab770497b2d71. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ESA011580392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e3b06ec7525bfee4e634bbbb76d81dbf3e6dee875eb1a728846802f9bd39da. 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/COAF42290060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3e4e26d807d4485e9345702459cb81863cdac1640022762ba4a238feb862a1. 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/US7VG2337253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf718af4829a649e6e03468fd6916a0abebc4ea20e1ffe524eb4d6ce7b6198fc8. 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/QZNJX2332248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8d6ac94453c7c819ddab0a0145eb44af22706edd1c9862516d947acea6596f. 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/QZNJX2332250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c766453bf75cf8a79501aa8266261bb432f793af79733fb5867f1a86e0e900. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:47:13Z), 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/QZNJX2332252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1384a8ee6d7e17b9532899aa93e343b794eae8eb1d9dae3bd5aa9ce001fb9b22. 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/QZNJX2332253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cc88f11c3e5916505fa3929d6c72cd1fe8a1bb33979b2502dbccb9eea1cab5. 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/QZTVM2348281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289adc9b20436ac8f4d184ad9591798bf774591610d6e778e6e7a75c0fe3ccf8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLM2491715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983cecb3a00399afe58df37ebb10fa84c405e968123e6500c05df5ee395e8e85. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJW2403051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092ced31577d5a633599b6affdf995ab37d98836f169c1dcd711915d823604ba. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:22Z), 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/QZTPX2476337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443b65e54c542688c26f5423038fffe278226518b186611585e3810ad073c66e. 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/QZTVM2423976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4782b92a7b160994d41a0600d120b28cb87012b79f9e8ec44b12548ab4f908f. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZW9L2447523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e442e59348ea6092b32a8dedbce5e7284115b08b81778b467c88ba80940ed28. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNJW2594195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cf9e2afe2254670e0f04b0c393ebf981b74f7585e2f50706e9614e50245160. 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/QZNJV2587899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5499550d84521df4244ac6d6c319c41d0fdf98993a157f43823d1a63807485. 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/QZGLS2518331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c7850725a362f8b4fb74a8074af28d6939ebdd333d21522614a94ae7016dd3. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNJY2527953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e442e59348ea6092b32a8dedbce5e7284115b08b81778b467c88ba80940ed28. 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/QZNJW2594195.