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 0x8a8100a5cae957e921357134d3562a98e2bbc762c47cfa505cf66ce3b7b082db. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e314380e-5727-4b56-9911-e70f29357cca.json and https://artists.proofprofile.net/proofs/artist/e314380e-5727-4b56-9911-e70f29357cca.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 0x2f080479901b020bca519e29a42f82d684c8686c4ee748ecfed0fb6b7a6286b1. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCAER2028963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485afaf54ecea48fe3481991a6bd4c5fd42e4d095395374118f87bbb262cafde. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAER2029205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9fc1f58162017baa577bd401b14acf1757209c76fb992ab101945152919360. 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/TCAER2029276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed899227073c49075e1546e376505b99016985cc1b0fa5254275480e877dbe6. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:29:20Z), 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/TCAER2029291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06fe48022e57006b7ae375c746277b3c955ffe4614c316697e68443bbfdf03a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAER2029341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe0e92874ff1f249efb9a27976b250c69d806049cecc2706e1ed56ca76fde11. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAER2030802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e05ab7d2d9e52dccf92487268ac9d17b2aea4be4a9b8d1b0d41f6abda427804. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAEX2010470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dd550fba56b05363c25a04466039d69c56cc55047370869487af253e01a282. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:38:49Z), 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/TCAIE2492358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab8db84dcde1c4107d974f5f678a2990b46ecb240796484282e9897f679d79c. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAIU2429108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a8bec5b236cebd4b0b446e6932ae42f6fb1279c320ee9bacb1832a00ce39b7. 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/TCAIX2457247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d14a7c24563a23eeebc4cb863fd2af86f7db559c2891f0bbdcde21c599fae0. 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/QZZ782552440.