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 0x120a8a2d763a3c5c98bcc657d6d5ecde446aa144551b09f490ddb400d9b1bd0f. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a82608f1-e842-422b-8af6-bdef52c1ec49.json and https://artists.proofprofile.net/proofs/artist/a82608f1-e842-422b-8af6-bdef52c1ec49.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 0x4eb1916a41284502eb5eb23be929e18814d56a63a69b6367c0287118265eac3b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4DW1586523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81775c691093dfd2b16094dcef4050f5afcd5a361c5d9eab7ff17dd64710ff8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4DW1586524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9718a49e008e6d3ad05c97510c94e42ec430179b96934b41582285f9c9d662. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4DW1586525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0d382bc4f14c9a399cd978da0e7831b194c836db65cc5338e2faf37422a486. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4DW1586526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc51f2e2ed0d5d4f7716dd2f01c4a7d03f9acddd2b4189ae4f00135da29e43f8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4DW1586528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0ee19261d921ba0a6acaafadf3baf53cf3f6b7c5bf92936cce47bdcd5f19d7. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM4DW1586530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5169daeabdb723417413da46147ebc80ba820b31b0ff7ac5da472ae850c37bed. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QM4DW1586531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7271c235c2392c2dddad9d6b6439696d2a70ddf8c384afdb37750854e60abd72. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QM4DW1586533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca3c1161524f15107297663462e7bfd47ab042b1d802a4d987d1365d1c1b09c. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T19:06:12Z), 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/QM4DW1586534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d43986d574333f19adae4ac4cb15c54522ccfede28863e8bb70d44031c3464. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4DW1586536.
Diverge, Transmute, Alter - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7a3a83bad3abb56bc8c38ba8391d2bada68654482b91cc4612e9c32fa91c09. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4DW1586545.
Inter Dimensional Abnormality - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d8c253b5de69ce479fbd8d1edce29730c97e1d6dacdc5bb366a0e7b1e6424e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM4DW1586547.
Procreating the Offspring of Gods and Men
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81408003787dbcf2fa91da42045050914e92d4c3e8833cb73b8c72a2ae0c00c3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ4H21600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ac0e89412d639cd00d274067538fa61be6785df20919a70ea1e2a3c92f64a1. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZ4H21600036.
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 0x7909913ef56f78dffa85cddc24f74d35431afb30a1b71b9e4d1dd75c84696072. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM81443208.
Procreating The Offspring Of Gods And Men