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 0x9c0d1a3a12c968e81c03aff91e340ad3b32278565eb6928ccbe56cce7bbab793. 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/bde97460-5b59-4b11-9968-c7ce30bdf5bb.json and https://artists.proofprofile.net/proofs/artist/bde97460-5b59-4b11-9968-c7ce30bdf5bb.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 0xabe90b00828a6013256d02563e56ca6a6ebb222f330853bcbed0ceeaeaf96025. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BE9HW2000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba45596eac92bf03aeb313103235bbd6a017b798974f37f3ba946c7ba2bb782. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BE9HW2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75692f5d7d4e392e6d14c6d29032b3dfd929a3b4fe24379cbc0ce0d04bddca7b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:04:02Z), 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/BE9HW2000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5939706dde28ab3492a86d14e15f458f75a7f0eb651f666cbc6be8e5d0976aeb. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BE9HW2000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516a9aae4349c6f7c6bb113d5e1c4218a7a6a6764c440f1ed56e67547b2e820e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/BE9HW2000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911cde0245b8d06ea5373a9d434b1548a8ab7bbdf8e466e5176ec5ce64148d81. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:28:29Z), 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/BE9HW2000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba9670b87691f7dcca16b61121f7fa79832ad9989e7462aba4bac2ec0bb9f80. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:08:45Z), 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/BE9HW2000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d0452ac522e71ceaa7ff3cc87f356644b1855aba0349c675c1a4f70c72f209. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BE9HW2000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed90d991f8ac5a583b9b82c288a72d8fa96613618ad87193b739df1c65a4f0e3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BE9HW2000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3a4e467842a780f64222c41c9f742d258ff2dc6e94ca0417f0c169fef4f485. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/BE9HW2000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50a661326e62e784f2817a81d53eeb679ff68e8a8b8c481127ece8d0c05a857. 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/BE9HW2000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98523b1654870cf609e9b890325d66b73e8fc0484ff3f1af96025dc36060d7bf. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:54Z), 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/BE9HW2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb489827a30b6f043dd0c2935a760c7fed94cad4a001dd7bfc8addb50c62646a8. 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/BE9HW2000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3510fae24123fc621f043dfa16a8584a9f199cc5db8443013b7e48567c1e6f8. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:40:16Z), 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/BE9HW2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e939354ffe5561e6757980c56c7af1cd2868f383c4021a01d83ae9e738da75f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:01:10Z), 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/BE9HW2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cf520da0d31b46041589c486a8c8f9507e747fcd09ca52a1d43817731a7025. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:34:54Z), 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/BE9HW2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee3fd25911e8a3071d481b897c1f8f978a4eb41c5eee9a7671525a2e5aa3d5f. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/BE9HW2000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da69b938a70f38478ad722f66b7581a982a5343aa6899e49ecb8d599f27b4eb. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:27:24Z), 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/BE9HW2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818d1ce59a0522ed1ace2b84f29c05e0b572e2340f68608689c172907ee4bfd8. 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/BE9HW2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56438b51e2cad3a18cc0d456484d6c053893e0e259d1acdb6af83587070e40cf. 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/BE9HW2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa576133ef0e6700fbc17768ec20ed5d8461e2fb50787c86f67c5f3ff9e2ef399. 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/BE9HW2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c42cd2723b197cb2ce8711918d4918db1faea6c4c6fe4199ac0b76507ca7fc. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:02:56Z), 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/BE9HW2000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fe7aa300b41f50408d6ec2fd92fcef73633b424ada528bfb29f820de4bead9. 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/BE9HW2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed69f612f493ca5fba9a9ac11f6ad0418509efa605ce8a5a68aefa0e8bb712ba. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/BE9HW2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3261424f17ec1c2ed2a974aedd04251870d5e832fdae68ab9f3d6b41c409d1e6. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/BE9HW2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f858cf90ef3d866b4598f7012d18e4f6dbb9fdc20f956ae577d9aebadf06ae. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:36:10Z), 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/BE9HW2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004a96e968bf49dd08d56f2e9bb9b5ee6c929c00788df8ea09a24f96e7027a90. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:38:52Z), 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/BE9HW2000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca4dc0e8feac407ab22783c3a92aeb3f85744ca766b3f19611e6a3f26eeda4e. 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/BE9HW2000034.