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 0x1bcec705e5ce6c1c4d5a65c0ec3392f1318d65c3ab87872c54faf5da309468ca. 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/a6c4821e-2972-4ebc-b1d6-da940ce1a3bc.json and https://artists.proofprofile.net/proofs/artist/a6c4821e-2972-4ebc-b1d6-da940ce1a3bc.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 0x57cf81d6b75a9c42777e96a7f06c23b825231d3c57537ace9fa7d44ba62af35d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:00:25Z), 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/FIYAM0200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a06aa5363dcfeb38aa7b50ef68cce52b95349991b10c0e10fa80197912cbb9a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FIYAM0200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b2a61c4d9739b22b957d256e47252e947e15e18b3fdc7dc31444875183afb7. 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/FIYAM0000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506da2c5e321725d8a2cd6bfdd4e7af5ed2467d5c23ca45f95fcadc7138a70cb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FIMTA0000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa889d4f347fb147ab54ae0f9333fb5f3903dfc8f78d8c93ee7e6553bf2beab20. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FIMOM2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb58b9f23ca01a35f27b1990c03aaa0ee93555abd9a9a56bc2037b1d60b8d1e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/FIMOM2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfc0eba8145a475d7d6ed021728a9f7ba1fb3b866e8a2a06cfe1c78926f675c. 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/FIMOM2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a7d4fed1b21cda14c386f870af968985dffdf60bbebbc9b3e9eb6d76cc4269. 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/FIMOM2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf817c982d26ca69df09f234861a6294937e949c52056c35cb0719e0c0ff68f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FIMOM2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa889d4f347fb147ab54ae0f9333fb5f3903dfc8f78d8c93ee7e6553bf2beab20. 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/FIMOM2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d98b17635db41222ad0389e59e341f7c0bf5e1f382266e30a7fa087b8d6c2ad. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FIMOM2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c38e2de3e12a992a18ffee818b472e5137edce8aa6dfc7b82c6880fba1ada42. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FIMOM2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8592eb9f1d01962d95c09371a6720c417841e2c0803d2d0ca9e832779061795e. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:57:46Z), 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/FIMOM2500005.