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 0x42b0b67324913316b5b615373073404147a1410100087525742fe15ce732f6ec. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e359913-79d1-4d83-8824-feb96930438b.json and https://artists.proofprofile.net/proofs/artist/8e359913-79d1-4d83-8824-feb96930438b.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 0xf929491d5eb97665bb0a50f97777d29f8bd60ea44c09d31a0497c33691122026. 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/TCJPF1731496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c8b7f4cf5c4ffcfea039261c38fc76c2fe70b5067cd3713b7cfdeececb8095. 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/TCJPF1731499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d868095c958be12ba9bf4f0f3b1fedcb7e94e6d90d85d2c8f6f25d006f713e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCJPF1731498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5467b45fd024902d76a286181362027fbcd4eb76773982f7d97d90fcb2b03e. 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/JPK652300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0646bbccae7d8ab2f3cbb97ae11b2b0800954ec4645df30f12e677eeff824924. 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/JPK652300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e8aaa3513c50bde789b1aec44cd7909398efd68ce7425c79993fa47339d8af. 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/JPK652300101.
When The Moon's Reaching Out Stars -Reload-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf209bb8ef8ba61ea24c47720552355693d6db552bf200d385274ff0a1f59818b. 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/JPK652300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde731e450fe98e61a17fb3a0279d5b14594e0d297bedf5d84e69eab1eb2fecb8. 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/JPK652300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a6f3e26b25d8bee77b377bf649dad1eaf3bdf8315d3851501e175686e122a8. 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/JPK652300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcc62634afe4231e448a139fcf1a2fce828585b299517907bab4f034d71936a. 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/JPK652300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c9c8ba1f3336e12f93f984504450aeaad9818bdbe5fffbe96c8023d51e4e2e. 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/JPK652300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a68656cf97967a61b4038ff95a829e812caea4d2c735eedb8c31e6e07c513c. 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/JPK652300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79085263f65a5682de456db0de27502a5d04fe63e1e6061912d719b38e8953b6. 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/JPK652300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f8f584b736938d6a3a0fc9b4825881a6a7b9ded80f85978917c92597ea9749. 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/JPK652300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d9977d99ad5dadbdc2965a3dfa416d1f45186a0295dfc8a9fe825f007c7169. 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/JPK652300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8feda6d92e7852179174aa51b477774c208a9f3125b01ae778d32600fe3c59. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPV502100156.