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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0663edc78b41e8b75e215ed6dd7a34f2b85f72431bdc1eee1defa22a5109f67. 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/070fe242-45bf-460a-b5db-ca4a579a5d8f.json and https://artists.proofprofile.net/proofs/artist/070fe242-45bf-460a-b5db-ca4a579a5d8f.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083b858236ae0c647a410924b5349bc510cea534417ce9ccccb0f0d5d5a52531. 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/TCACX1781774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab3c9e9fb1a560a4ef15a1740bced8313958641c639d6019b73102a5826e66c. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCACX1781777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1246bd38f7706b0fbbed097256a0a1dddf26b6f075377eb1ff793df5b8b165. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/TCADP1846107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdda8f4059ea6ff0633ba8d59833a1063768e014ad7cdb2444d86ad24d161e78. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCADP1846108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf1ff7e6f9e9083c68cebb83e6e06ec6e9e74597426af02671b1937b429d300. 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/TCADP1846110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c30bdbbf6e21e311225ebd4f7dd671d93d3e8e94a0edc1751b58bef4fdc6e54. 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/GBDHC1800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8312b7ffbacb62bd7ba5a63a57edad0227e9ae2a8ca9905d0321ef4e9ed9476. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/GBDHC1800203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7208ea8b91629bd6cbdbf1cf7de4ae0fb3d0ca8d41318e5080a102bf84b258. 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/GBDHC1800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b6406ce9c4f932bf7e028b9391b8ace534e6634bcca416ab598a38cbfda423. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:22:23Z), 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/GBDHC2120901.
There's Always Blood At The End Of The Road
And in Old Salamano's Room, The Dog Whimpered Softly
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebada0a3ab8561b2e2a857326352c2c8f13937b5505fba460617efd00dd83aac. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBDHC2120902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7c09fe9fafd4d88dedb630086b99c375370e95b2b9b3fbdc8def09d17fc30f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBDHC2120903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5247886b556932c0fa4926b5674103b71bf7e8d060577c5808fd1202631ff4c7. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/GBDHC2120906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b98331676039e452d5150fa7d0547f6f0f40ea37baffba9f65aba092fcd6640. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:27:24Z), 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/GBDHC2120907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eae6916e2a02949e0464299d655abda4b163aff320ce3f76c2fb2bc86a0b8d3. 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/GBDHC2120908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be7cbdcfe1e850c8d549e631c3297ac7badd3b131c4667a82e5df6b9cb289c3. 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/GBDHC2120909.