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 0x3c38a6e071b4573349e0a2d4b93f39e5dbdb71e0466d742a7e923d045ba89dd7. 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/49d04bf0-cdaa-41bf-85b8-b6b75fb70660.json and https://artists.proofprofile.net/proofs/artist/49d04bf0-cdaa-41bf-85b8-b6b75fb70660.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 0x14f2588c72003f955552ee71044a71bd4105f846aa33889fe79ad6dac67c8f04. 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/USJJX2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2817e5085f7b1b9b4d6a06dc334209fc9e65edcb70ac7a5dc7aad4ad7135e9. 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/QZEHC2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379fd2c5e21c66c1363bd4d0c6ec7df3117fa4db95271f124a3e11334a62f99e. 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/QZEHC2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc70f0aed1d7db4cc979d3c7228d2efa9990a2039b7ed238ef664bf0eeba7829. 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/QZEHC2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46dfbc786856cb556a5cc37ac9d718ce52dd3abb5fdb17d9ec0301120149095. 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/QZEHC2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119fa13f69bfa0d00b261e756622a863f6b2dc645856e12725b5fdcb608ad317. 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/QZEHC2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10b5056bc2596b5b6f4ae52b6d2a233fd2fe8e20a19e2031a0baf38a2374782. 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/QZEHC2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3392f528119aad7d3ac1dd5184f8b024291fd4df3505b840f5b7d2954d36d9a0. 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/QZEHC2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa1ee3341459b8af2f557d48079fb1fcf3b5f98a5d284cc5232b6da176a6dd1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USJJX2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45be4a6e6456804cdfb4141461148232dcd031b9c6fddf409c820e73b100fba. 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/USJJX2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6059bc658c02e95985f43ac9f9e352b8214bbaa8167b5a0e747ce707017b016. 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/USJJX2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d099a759f601e0cd85d2338da64ec9a4d6bbf0fed2c2e71bebd35c8ac4e36bb. 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/USJJX2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f2588c72003f955552ee71044a71bd4105f846aa33889fe79ad6dac67c8f04. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USJJX2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd89913afdca4b47c757bbf544c2f7d3536a9a5ce8700c4c5e84e33b3acabfc. 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/USJJX2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2be4058859d4dc4c82d3a20591eff23f25c00e19d711ff3a1d1a6aa36d8b687. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USJJX2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3cd4c2d5cc5a2efd5fc63c1f1dbd10a622ea8c470668495339a82e903a6baf. 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/USJJX2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d099a759f601e0cd85d2338da64ec9a4d6bbf0fed2c2e71bebd35c8ac4e36bb. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/USJJX2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753d28d7ecd987d9fc5773bc30a189e9a7cc1036c6f2cc8e3c778a5d2709b868. 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/USJJX2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6d4d059238af4dcbe4b063503fb44efd8b43d9a049faa1e1f3c3ca1b1fbb5c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USJJX2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4714e5bb94d478e5318ccc9d330a59d3badc992d29e8c7be4f0cf4c171a6666. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USJJX2400005.