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 0x67c605054e6aa904d4673079b8627a15d13100925ec9859febed04b79d630ad7. 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/6229b6a7-5fc6-4735-b469-170df628ff45.json and https://artists.proofprofile.net/proofs/artist/6229b6a7-5fc6-4735-b469-170df628ff45.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 0xa237231bcfc6f1a58c3bd66fb11513d5cb8361e0eaedff4cc315c0d8cd9ddc26. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:02:31Z), 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/PLC062511263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b35763979fa4dde5ccd69f31b0cb955ca9e88616e8c7a506278afe07d89e99. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/PLC062511093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05737fabe3217c010443073fde9f17888266babbc89a3df3f6ff7bf5a2c95115. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:05:46Z), 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/PLC062511271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a1c60b758fa6207b8c0eeceb948f04adc36f6e80146e39a982153154bc38bb. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/PLC062510540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bc64f8758ac4811859c23217faf3b6e72811fa25fa88fea039c7007e18b1c5. 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/PLC062510535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c84e236b1cdf14b938fa673c5b3bf37091a32140569f1fe7dfe919085030f6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:28:01Z), 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/PLC062510531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1640f47e9d31ee65633d84fd1856c1211b262cd4753b90e1e14e735aa1a70af. 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/PLC062513152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a9c65d60b8af68ce98e0d180e89a4b5e8774504fe6d2d2e2a8a1d83dc98859. 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/PLC062511195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ab03a14fc1bad5188e58a170d1d7ff867cb00ee1e852f7fdc11980473b7726. 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/PLC062510538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4583f8bf67b5d13c9f340b2117004b3a385c06909decb6728479f5984baa2faf. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/PLC062511194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcca49ef8f852e9016e762ef95c0d8ecc98af8b38fcd1e9826050a261692fca. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:59:23Z), 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/PLC062510533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cbb29de213af75faf63d58b4ecc10f1e4321a3b172b9bd04154e0aed68f0bd. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:25:50Z), 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/PLC062512348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f600cb0056ba540a577338e14f38c21806d2beecb3c311f906250b564e6bebb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PLC062511429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2c02a71b0197bfb953ad4a885117e9e4ebad0c7f958a64b847d181a6e4bab7. 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/PLC062510419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74d5f64057e96d2f1a792edb86284fa12a0df055ce5c2c8cc864d46071ff4e0. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/PLC062513115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e68fd88113ce6352519a7391ec5b6b206e04178399b6829f36bbe13d98251a0. 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/PLC062511211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d23778a17b0928d93886cb98f14a131da5bf08fcd2119af2deeac01d00fffdc. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:43:23Z), 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/PLC062513138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb48210de9f1f63b4d32abd02cf3e7b24761705c599ab7f4b35832272c88be0. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:14:23Z), 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/PLC062510534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2cc969689da81cb2cb8e825699070d5a8a2688e7b597470688a4850ad5d046. 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/PLC062512351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3218a6d80aa4b54cdb45980bacb4a991965f7b7918afdcdbd9e4edcf124d9e43. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/PLC062510536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f951c429544f4bf9e80150eca88e83538480cf5ec5ec6fa7ce2a5ae35310b0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PLC062511205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d59fdba062202ffb52767f06079128caf37ce41f15d89c8643c9e87ee4a7a6b. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T10:37:44Z), 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/PLC062513140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3c182be164a1582f64fe3609c97ab7bdfe314e94c6ba75072f244d82cbc214. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/PLC062520904.