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 0x40dab0d569e4b19abdc038aa6115053e4ce76c3ac6d3b7952cc261051eb6c263. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/271ed638-8b5e-49f2-824d-5182766a7c2d.json and https://artists.proofprofile.net/proofs/artist/271ed638-8b5e-49f2-824d-5182766a7c2d.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 0x8e2098cbb12419c8b532e8a75c4664685c15d7a64fd0206c311ee52413a8eeae. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/PLB842200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cecaf8b1bdcffa4c234bd58596da56749d3da73040922f60fca2fdf3f7b771. 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/PLB842200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d5effd6d06c59dafda3597963ae7f36342676fe52b7648c846b936aa0b1e57. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:09Z), 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/PLB842200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bac2afb11c90428096627c217a9e608e4e2fb09dbdfa56151d8407b23dd1aaa. 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/PLB842200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40768032b9c6c9dabffc8cb1d36e337ccc6f3d03c17622447254b11078b542ca. 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/PLB842200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10ba4de01000dd45b7714c052f6272a8fc0ae4d0db1a532f97995dec873248c. 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/PL9G92500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10ba4de01000dd45b7714c052f6272a8fc0ae4d0db1a532f97995dec873248c. 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/PL9G92500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9ae2fd354f0182837a8245ae6c954a9fbba2a2971c9e67d3af120e7b66c897. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PL9G92500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa505fa41efbd9cc59eea3b6f2d17795b321769a328cedc02b2672612c033d30a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:27:59Z), 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/PL9G92500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbb337723de38f0a6c8172bc1cd8b9c0dec8fa02960c025e21f2a994d571c40. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:38:37Z), 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/PL9G92500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc730815cde59dc86e4ced8d18d5cc6389714c9a21027b783499093ba3ab61119. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/PL9G92500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb88b5037489219a2ef393a387435a35dcd89bd6f797e3e1e05093d2f2a55bf. 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/PL9G92500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc71aae62dac0662d818e425f67a41f61179f32077a6ec3eb07f9304720b741. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PL9G92500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8ebc7c6ab5957e35f87e182413d4308b89370a71018f74fc89b8118ea0c235. 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/PL9G92500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e50e75770f01c959ebc407c40e1e3115929e8d36fe366d2c82379df163db1c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PL9G92500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945756843785bdba1467a49f93e00ed3dbc87f9d1d93617e04b8f9168e0e658b. 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/PL9G92500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778d911e89d3bc3bdf895d39435fa3a44cbe3dd3e3425f71e9373d32bee5c481. 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/PL9G92500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461af5492941000d7a7c7be10b53924f815278b8a73bb5e9c694277ce8f1b48b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:53:47Z), 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/PL9G92500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0221126b137a4e9c4f2909df9907285b376adbd4663365bf7eaa1da1fa4b179. 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/PL9G92500015.