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 0x3fbd6a4f5aafd3a9f86ee28d161f0421c8ac255efbb30b7d192e1ff220e6b6f7. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6df81aff-717a-407f-a38b-77a7b0bf71a3.json and https://artists.proofprofile.net/proofs/artist/6df81aff-717a-407f-a38b-77a7b0bf71a3.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 0x044e208a9d0971ec6ab70b0e77ffb52daf1e88c484fcf7db3b2ec160b356070c. 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/JPC102400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1ee616988e9d9278a2c7a25945dcb52b11f2a22479302a2c6ab42519daf682. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:56:18Z), 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/JPC102400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0712a7fd0e73c4dd5029f6de0b4abd263dd7862e8f11a1cff0c8c9182ae5021d. 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/JPC102400186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae15a2efba984af7a9a6803b7606e9cd680d7b533b8672732cbc3240f6e7775a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPC102400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae15a2efba984af7a9a6803b7606e9cd680d7b533b8672732cbc3240f6e7775a. 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/JPC102400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefa4bbfdd7e8d4e462517eef9a9f1341f7b8563b7d82b62e79f8aee25f12e8c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/JPC102400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6592cbbbecbd714f6ddac27acc9cbf6b8cf85ba69564c9512e2a2faeabc00840. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPC102400212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd851929b0903370be933ecfa9b5a1ffe1582f22b164bfe8aa125f05857776a84. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPC102400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02193ae03b5cc1b73108cd024cc5d663591cd66dc2063a90e0f680073511283f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:57:38Z), 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/JPC102400288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1024ff1fc3ba48f069db912ee8bba7eb8cc686f7a0a949931ba42343eaf6deb. 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/JPC102400358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bf0db4a7650044655beaa909b1aa6c13a9791f38b9e8ed4c83c5db9a7c8867. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/JPC102500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411e74a51220a5a86b0165a79e8cdc8097fab7dba8c3c188828f9e2d2f92bd70. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPC102500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54480e1e1220cf7bd5f399125cc1fb07790d2e70723ea8383825fa2d9ab0f64. 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/JPC102500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411e74a51220a5a86b0165a79e8cdc8097fab7dba8c3c188828f9e2d2f92bd70. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/JPC102500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02f4e3ae76f040ef9b2bdbba705dbaafc788af2d5e53389fc9eb9bd5cd2a210. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/JPC102500125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad7b682c8e30b88ea2a756cc14253bd274841c4885fd218a6e5b70e73bbfbc6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:32:30Z), 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/JPC102500201.