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 0xbefc515c232a78da5fa08ea36b62c2501c666d0237092d5ae4f7427093405119. 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/ba1b9bf0-8d7d-44bc-be4c-beb5d30c35e7.json and https://artists.proofprofile.net/proofs/artist/ba1b9bf0-8d7d-44bc-be4c-beb5d30c35e7.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 0xee141a9e6c2cb0d14417e27cfbf064d76ff2b0fbd7c183c7c667697fc9cff33d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BGA472225950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ad6664385d8d37cb79a4de0bd78d6a14271a8dff22a234d9cc4131d50fc3e1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUGBT2237017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dd1508dcfa00a3889ba15f95970e2c7c6c2401823080f826bb92b79710e0c5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUGBT2236998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902e677156b49d8bc459384999426b9ba3fbf14047240ce87f3f4ca2ccbecea5. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:08:18Z), 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/AUGBT2237013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75ed13d87fb3ba6293cf2fd6fd549d21707101d85b8a7c2925950fa33c7bc07. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:16:29Z), 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/AUGBT2237016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480b0263c0e440a03d1676dc81e4c8f6a48a771f4eda4339ea6e1896e6d8b2b2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:13Z), 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/AUGBT2237014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1a9462299e8d4e26a4fea296bbbb3d3def84bd44f26fc47f005b81590fa034. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUGBT2307473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38380ff92de06886837418ca6b7e534bf55bfe08d39c8f05420f894867fb6904. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/AUGBT2307475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ae0dadb25b508804a5ef9fd670df3d8f35ab9e9ada29ece25478f96d4dba1b. 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/AUGBT2307476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f90c88aaa98c1c4d6c3eedb8bda587acbaf46cd096c467ad3c5c7acd8d5ccd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUGBT2307477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c2daeade36619f39c7196bc2b035455e42b0a8475f7c343c3d1e1e849305d0. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/AUGBT2307478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f93e557f558e9faf9ea1aca882ab6a7c17241b156fd73369b133f3344883e9. 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/AUGBT2307479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7de06ebf45d00e6fdc8895b22b95ed4cfdf1eadf61e4c84d48d88a0249fe1a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BGA472424254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe838065ab342919d41b09ce634a73b82044cc63675cab1f4aafe307ec104bc39. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/BGA472424255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311125b70d47b66444ebfad900204f9111017214b097c91d6746ce94dcb5a632. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BGA472424256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861f149c2d03f4b51df52ce74a3ac008fa8f1e82c773d41c0888de2f278a0bac. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:23:50Z), 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/BGA472424257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b785c16f7f32dd5b6fc0e07d1454272851207dc87112a3bf28bea185c4448dd. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:43:25Z), 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/BGA472424258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1260c3cd70e30a752d9dbc06ddd3f66a9154d3f43c480c82bf030461145fa04. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BGA472424259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e83c2179e9eab723f0a78de5263661b271cb6c2496ef64a5d61795b1dc3d42. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:27:52Z), 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/BGA472424260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f2eb8eec2963cf1fc5211ea868b9791014a5fb4998a148854ca21ed5c1a7d4. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:19:10Z), 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/BGA472424261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff1fc7e7163660f4c420c2470f52ba7c23974941a812309310c30ab90b52665. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:44:07Z), 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/BGA472514856.