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 0x3d3d530af518612fa925d9ea0b74f80fe888bef9aeff182b2fc31771c9aa3f62. 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/f63436ec-c92c-4c75-939a-9663c6c5cc0f.json and https://artists.proofprofile.net/proofs/artist/f63436ec-c92c-4c75-939a-9663c6c5cc0f.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 0x57e5a4171b3bf5d03d3b4b70dd481e5eecc9f9c21d3c1b2a25a1d5eaf8fb8fac. 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/JPCO07751750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d05676481dd91fd7ca9816767f8d452c06fca697194e0e65ff95d8d78c4c572. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPCO07751760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5c8d55ed8307d2ea18f4e4591b8c4766c003debc000a49be1de07be3bc348c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPCO07751770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15c332f8b0790fcde2fd72cc8a7dc664ad9f224b05570a99b99a373a3dbcd22. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPCO07751780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af2122bc88b02b1b78e8868a078d6cd4cb91ac27fb3bc8fcb31360e04e4413b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPCO07751790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbc68b9cd600432475ac4f068cee29b2ec0592f60005fb515d548b13081fe6b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPCO07751800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63adedd510d090ae346bc5f173cffe8739a88de79cc9b55a6ba1e2911deae1b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPCO07751810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca15663bdf12945de1d3b1d6907839a5d254b34a2045fb1e2af6d449d6fd36ab. 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/JPCO07751820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851387e6bc8092e5d5f6798cca14ecba051b94bcba8f4ef7b16ac6f4b1d7f756. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPCO07751830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d0d924ad73f8ebb104039c1f8d1265d4932bad8c4a305416a79bcf47617f51. 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/JPCO07751840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb744268ae7eb871c365cd95f1a9c34ed6be7cf8a037baced5ed35d6d4a58e776. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPCO07751850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522d764b9e065f2b94e2276e96786cae5015e6f2c7a3ff56ad9d640ec8559550. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPCO07751860.