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 0x93bd9554a6394975877ff22ab32ae0af16d4f373736aeec8ffe6b4e45a561cf3. 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/174c1450-2d60-4273-aa76-cb19b91b8c72.json and https://artists.proofprofile.net/proofs/artist/174c1450-2d60-4273-aa76-cb19b91b8c72.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 0xca863e89647b5f373b5f1c295fb15edb0fd1b396e359a6807dad4069aeb1e347. 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/JPI101902110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e16c5369c734967b77272964f69455b872f33766d3e039a57a94a4dd4a268e. 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/JPI102001083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a18ab8bd40e69600b1737d11e93812691c3f3868619346a6f2bf41f4bdb286. 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/JPI102001548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa549b1ec99f70b7e15bba389450e13bc95a4a2d75d2d2052d34d7f4cf527dea6. 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/JPI102100703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81444453b5b5ebd1d43b1ecc3ed671c8a6259dbf60fce3ecde49817ea490d1d2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPI102103120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a18ab8bd40e69600b1737d11e93812691c3f3868619346a6f2bf41f4bdb286. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPI102001548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e16c5369c734967b77272964f69455b872f33766d3e039a57a94a4dd4a268e. 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/JPI102001083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81444453b5b5ebd1d43b1ecc3ed671c8a6259dbf60fce3ecde49817ea490d1d2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPI102103120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a18ab8bd40e69600b1737d11e93812691c3f3868619346a6f2bf41f4bdb286. 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/JPI102001548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985b6c476a10886b0142466ce39ffb69fd1b5178136260bf55f9a775d0f30389. 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/JPI102103122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0534fcfef3f9825eca59a6c592821f10205b189b27edb0e2ceb8018c134118c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JPI102300371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7036fc970f17017c4858e226dbe185acc83f202efd0536bbe7ac6e68a937ec5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPI102302495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3b0a8e19f4735c1cb64e3e57eff00826f09cbb8cff5658da0c78ecd8450650. 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/JPI102302587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd8307b7101cad066ac2ab22cd18bf51f6b614bba11600ca8922a20d7ce34a5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/JPI102401691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5461da1a7c116138eae745393559325e0faf131663d5313be15fdc9922c6bb6d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPI102401692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b30557e55621923fb160e0fc5fe7015befda5e5f6aec68310ae3ff3ce80406. 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/JPI102401693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e87b8ba7ca1194b50b0fd370b4baf5df94ef7bb57559106a9309d296115922. 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/JPI102401694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c7272962408643d84aac1b4875f08298a847643af4e06fa68307967206106d. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/JPI101902103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca863e89647b5f373b5f1c295fb15edb0fd1b396e359a6807dad4069aeb1e347. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPI101902110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a18ab8bd40e69600b1737d11e93812691c3f3868619346a6f2bf41f4bdb286. 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/JPI102001548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa549b1ec99f70b7e15bba389450e13bc95a4a2d75d2d2052d34d7f4cf527dea6. 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/JPI102100703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81444453b5b5ebd1d43b1ecc3ed671c8a6259dbf60fce3ecde49817ea490d1d2. 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/JPI102103120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0534fcfef3f9825eca59a6c592821f10205b189b27edb0e2ceb8018c134118c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPI102300371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1814c61e4fab3707d49da916f7ad745f8a336c52657f882e1fdb009203f78d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:00:41Z), 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/JPI102302072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7036fc970f17017c4858e226dbe185acc83f202efd0536bbe7ac6e68a937ec5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPI102302495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb39a88f245b03935548182128030a1081f73da5171fdd95c3f3e0bf7a312dc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPI102302739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1ca0d7dbcfce808eafcb8953376c940dcdf2774342f32b05a1853d88c3d631. 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/JPI102401689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b30557e55621923fb160e0fc5fe7015befda5e5f6aec68310ae3ff3ce80406. 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/JPI102401693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb16b4a2b8b2b6cce5e2bac86b50fc05b2f25ffa9768ef5aa99938e29715cc7. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/JPI102403702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce5bca1236eb971916c8a8b7efd501a3f77b89a7a7e579b21ce574c69491852. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/JPI102403703.