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 0x77221fec8fe7d3c3d85f50fb74bcbbf277be98a1165547ede98077187b0a5d38. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91075332-2492-4068-b4b9-0e6e89b035e1.json and https://artists.proofprofile.net/proofs/artist/91075332-2492-4068-b4b9-0e6e89b035e1.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 0x845c0db0aeadd4172c36a8ecbafce0e864e7e5a5ad3b9fc0d69e95f8242722a2. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:26:29Z), 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/GX5MY2237695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e18e8d889436509a2ea4caac9b4133df6b6db13c6c60b10ec810dd3b4231578. 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/UKZGC2306186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212b676fcde8b125e56d3ccaf79e80cd6fce0c597b525b00c7c1c2c8c801c882. 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/UKZGC2308105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a64d2962abdde153b9c8fae7d45993b8c77b4a78c3cd755ab9ca3c362941e3e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBKQU2394951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e034b4bf2d30c34ae22585a0f4a9a7824852111a7f9a2dc18435ad7ae8ecbeb. 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/QMANG2209249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b5fc67f794a5c3c12bee304481bfb259679ebd6a40632ecc9cb830773b7baa. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/UKZGC2400646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe836a005eef94290fd50f3ce19b02bac2ab1825e2b29bf9aa0770ba354ec5577. 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/QMANG2236049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaac655b89df26bd1061f0b6ab5c89f675dcbbb8ebb12d72814592c6e560dec5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEZL42306073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00077062d3ad28b9d0a732497dc1d328e380267d7e3ade06f9492aafd8f74e2a. 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/US3DF2479798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a3096bf0b33922922cfce7274324fd386cc6aba26a48bee8da7be35998ee55. 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/CA5KR2499186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcb913abfbd7111dd7e9bc5a441d4c91d058024f2988558e00299bdb30b04c6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QT4K52548913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b9bc7ad4232d0dd03ab62fd69ac7ee376da89b21dff962b0cc01e01bc264ed. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMANG2208961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6883c0fb7072dc93c0a27c62be47847793bafb390457d39063174f1227256dc3. 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/CA5KR2497630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88da8cc9c58168e5700a667fe4a710d44e0ecba9f99d0fcef999c569a42b528. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2497640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72eee0a7c32fb8feb53857655c764c1c322d72b75415a0f839390e6cc054db77. 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/CA5KR2497650.