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 0x13859ff803d37e76aaef0c8b2d2c9d94ff511386d588aed662c11bfbbf9cef9f. 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/719eae16-951c-4c65-813a-d95a4a18dc48.json and https://artists.proofprofile.net/proofs/artist/719eae16-951c-4c65-813a-d95a4a18dc48.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 0x9b0a79722af3384d60ea1d383a41667ab5f6618ed3828215b9e5cf6c214f5b59. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:28Z), 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/AEA2L2347040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51754d517f979c62f2468d0adf8b6d312ea2fc876a43b910322e224bcac8a2b6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/AEA2L2347041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ba30a0211fbe89aee9ac27ef7b426b59cf4e38a21522ba98d89cad890a0304. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AEA2L2347042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74f1370c248bb320cf06432cbbee5d903217a3d9a95e77ae92270c0c730f432. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/AEA2L2347043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e65c88cf5330faabbeb3baae1269e4f44c0be5f7a48852dfb5f846b9bb4069. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/AEA2L2347044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b746ae7d31c38cc2ab0f231a5a7fc9e0f4402165904f87529b821a18cbdda9. 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/UKEX32431412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63b69a89e4313cad4701cb2ea8cfd52ae74bbf1f53aa16c89fe529661d3f8a5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/UKEX32431413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198ae4f96b412669e4360f54be03a36785e47968ef6bc9ffdf2dd89b69d05db8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKEX32431415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25862667476bfef5dc7892517ac8def26ee18a1f4974f9ec1a1903ea5e2899d9. 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/UKEX32431418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9140c132112d1f430c0bcbe66283953d11fee8592561aa22db4313a43505f5ab. 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/UKEX32431419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49553abc92b2011122dd059ca93019a73c11e3cc2a43e4d8214e8dc4fdb80988. 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/AEA0Q2425027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6499c5ddbd32294b1409849710520596d9cc87ec7e8e937b98be36f63a62ca0e. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:19:20Z), 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/AEA0Q2425032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1250e405e6dcd87203b70f7fa58c9c74c24fe499de8f65d6807d74dbb33ae8aa. 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/AEA0Q2425033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe007e60417c5316608676d0e6f9635bb55654a61edcf8abb658bfa2f60c540f. 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/UKEX32500285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf2c64e5aac5fddc38312c772d007763e1a12c6daba68c80067d87e3da87998. 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/UKEX32506406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e8d4a7c1c686025314c42c67c0789a1c65da0c39e0787f9ecd1bf948b44e99. 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/UKEX32506407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e54bbe4dfdf5a3f67410bff7313ee709e64f64844ba84b3642443240fd1e44. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/UKEX32511055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73177241791a36ee9cc5e7556b51ddfa64d0cdfb8d134136a8ab1e383514a129. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKEX32511056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca92565d4d7ea251ea431d085e41c1d648e377366d422b82bed1204ee620126. 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/UKEX32514206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf81699a3ed54fb58f7e8e9d9e0117078b4af0ff9b59d7420d06d748dbabc95. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UKEX32521604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e698a4ac14e166fe3843e50aa2da0ca3fa9367c2f7ed23a01bcec4acc739aa. 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/UKEX32530317.