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 0xcc004d1528bd8aabff0a6499da792c31f7e28f0036c3f77c6df7f1f2ba4ab928. 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/07c5c594-cc8a-46e1-8159-e9ce17e8270b.json and https://artists.proofprofile.net/proofs/artist/07c5c594-cc8a-46e1-8159-e9ce17e8270b.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 0x96027f61203b67cf88ab0bfade656eb0e233cb00525ff9b917e2e9830911b172. 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/QZFYX2426403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0613e926ffd319f7c4caaf845586cac44c9a67f31e09751a848e5ee972c3d7. 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/QZHNC2428595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936431793bab5637f657db5b0eb9ad97512fa7222381438574f2a8a3cbab49ef. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZK6H2430661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7f13464eadee792d895b4c79b08fc8973cdf6b922cd91c4dfee081313efa48. 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/QZPLS2403292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bda297d150c6471e51d21ae59e8b0f3232def4946477a5676f31748f4cd66cb. 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/QZRP42463516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a23377f0e120749d7ec2bb77f44ff4e8e37f89cb84912d62313bddf78688c5f. 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/QZTB72431135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe722685bd06eb56a277e0f841b393364199b9622d25d37104253fed5b212f9e6. 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/QZWFF2467115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd797230e2d4657f0bf79ae977b73da000ad11cb6fcabdd574a78fad4c3309954. 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/QZWFV2459680.
Shiki Taigen Is Going to Beat You to Death
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888cfebac9ca52c5de071014d4e6fdb1797be8d38823df0e255345b2d0aa5273. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZZ7N2457257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0254096fcdd725351ffe4d022bde5fb665b076fa0b430533fb114a4634799efe. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QT3EZ2405252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a3d8c985ce348d5b5f61320b9accc7d1293f25f406b34e0212ddca372bd538. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QT3EZ2405255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec30585314f3796177c19ea760686751b45d9853f069860369eb29357a723f60. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZHN72575081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a37f917fcdbb1b92d9f8fb4a493cc5dc37760da2c1c803bba19821e4f6432fa. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTBB2464976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c9daa7e11d920063a339f404c60206a47f7efee6a75ebe1608b20ae6938194. 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/QZTB42478693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8accb8a9c7328946b5fbbbef9707ed61929e423f2f6ace31fad133b23a5ac0d1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTAS2453356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7f13464eadee792d895b4c79b08fc8973cdf6b922cd91c4dfee081313efa48. 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/QZPLS2403292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee092aa88556b4a83165bc7d47fa91d7b541cef5c5f87ae70f7ab93b218adcc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWFR2428871.