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 0x3a2e0f7b994f60d5649c0ce19a1b02234ff525eb73fd45e5aad6891d284f06e2. 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/0407199c-92f5-4794-9725-0ddb2ed20119.json and https://artists.proofprofile.net/proofs/artist/0407199c-92f5-4794-9725-0ddb2ed20119.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 0x48c743defcca9fc5f5e04d2c7a7db5e75746de396026280d64ee09c83958e0b7. 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/US3F71910704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0906f35185f322abbeac2bc6034e7350d91dc348ae40e878305c08632c93abd. 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/US3F71910705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad070a4ad1397bb5468643ffe18771a145f1934b2a31dfb4f2ca9fe870da4b37. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3F71910706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83cb5008cfcce2d79bb5165de0d2474c8231fe87e6033fcf4a214014bdf8bda. 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/US3F71910708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba20ff04e2e61919a7e3b0ad3cd9a92050c4823e5a07b43f1b21a37e68c40d26. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US3F71910709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3477fd87317151b7422574e43892a269dee135516fe71542b1ab7f73a0111342. 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/US3F71910711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf490793689c4ea42ac9b76aefce342f6ff711648078ad14dd693e54e47397733. 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/US3F71910712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49196f29eb618d93be49015cbe3c7db45a8271bfd1dcfdb9098bcb0f1c8c6c8. 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/US3F71910713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1babf81dcca52387d69bc76616b89d79c75a8fee61c82e0670423f2c3bed5893. 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/US3F71910714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee43bfdfd93818fabc261d5e5eb101400ce8bbf5c98feb8990779b822593374. 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/US3F71910715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad42123d43d477d212d65cf4bb6f5670cd016a253e16d47f8e2b356840a05ef. 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/US3F72210919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e43a48e2b1d23ea4d1cb609fd389959e1faa79d2c71f01bc9df4f43a586ab9. 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/US3F72210906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877a68a8cdeb15adb8a14ed2258403d79912b36770e742ec605385d52c6c47cd. 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/US3F72210920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a888be00c6fd7283b2a5ca5f2357ec1cb16f15e01645183a57cafb4fdc0a3c7. 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/US3F72210922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4a3f8d923741f4ce895e86d5ba7ca6aa2b897950a37acc21ce8a9bcaf4b9fb. 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/US3F72210925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e43a48e2b1d23ea4d1cb609fd389959e1faa79d2c71f01bc9df4f43a586ab9. 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/US3F72210906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f191060295766f44e6e11660d11b8c516210d45775439b425e63d1e40acc603. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLL6R1800825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0b0b374c19929bf006aae5e95c19cf6eae8a33f0d56f9e6008ef29da2b9086. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLSH71100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62623dad5897af9f5bd44063692ad601dff5be62d455e57d823b765f6b0b84e9. 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/NLL6R2301177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6c82008c7ec3146054ad35d4bd3ec5a1f86e1a9397714653717abaccfd4e33. 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/NLL6R2301178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b6096313bbe988556e49d775cab20e0f1a81eff429bd2ec1738b9ad3b8ac04. 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/US3F72310953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1a58673c7f3d11e4c23d354b85df718394c066d832c02073d8e9803fc7d870. 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/US3F72310954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6de2d6b7dbec4b45188077227666a966ee54329345aab39668ad155eb5c5ec3. 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/US3F72310957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0aa9f5af0bce0434ef46d293a28c25d629c9306129f5beeb9b339974064f5c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US3F72310960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712c4e26cb7bd0fcde89013f33a1880b2898814f8d209ce63da96d84e8392aab. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLL6R2311164.