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 0x09f12d04bfda7f3a63b21d17cc6d55bdd467689e92bb2a8b60bda6ab90eaabfa. 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/cc3ebf56-2920-4814-a7d0-f92a42e93c53.json and https://artists.proofprofile.net/proofs/artist/cc3ebf56-2920-4814-a7d0-f92a42e93c53.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 0xe8b03cb09cc5d9fba809d9a33400d1f7930f550852356c44acdfc3ec2cfad70c. 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/CAHQJ2005712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749aba4c5cbfe36344c427e1686daab016e2defc12681baa323037d29c631fe2. 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/CAHQJ2005720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc494b0344b457c2df87c7fc1bf7380c34985a60bffc1f9aa174c5f14b2b9c8b. 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/QT2VB2412284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff1070075ea3adfa15c3c0cc0083d356f4087641f66c00157e1744277445132. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:13Z), 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/TLVEM2473684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479381c5ca5808242cb8015256e38edb3b3e6f67318714c70716c895eb8393f8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:23Z), 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/QT2VB2435357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992a79bcd3bc52c649841c96593cca76444da1e8efdb481b161737981a2d8194. 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/QT2VB2435358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481e34e817cd5fa8e8c293f0751104e67e732c1744a563318b532f6d50073559. 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/QT2VB2435359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a95ce20307125d9461552b46517e0a08a2339fc5768d6c0dde747c6de26f65. 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/QT2VB2435360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa429f99671ea5de67ef12731263e3d998c371805be29c804eed5ce98ca4e815. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT2VB2435361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d67a485b28dc81cddf91d52f5953ed1dc9496d0cebabf8cdb71ecda8a74509a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT2VB2435362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af3bcdc3e235fd15456b86944f73b25eb636779876a2e806161d1a1c0d98c97. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZPEW2506720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e30179f937fd982eb2f60fa890636765d5c8268283632f7e242ced4cd74689. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZPEW2591389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6718c5dc8685e9f4a5d41335da9a799d579dd96f6245c3b2f05a9612f895f223. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZPEW2591390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8e32ec6dd142de0cba5c210dce44e955fef1b2d45408d707f6cad9aefe476e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:48Z), 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/QZPEW2591391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668f8144678ff0b31ef58f8552fc8a3c061f0c68577841c6b1b62cd065eade6c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZPEW2591392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915ab42d7187031923da81cbfd116c1c31eb204c7309db4b665f345bd9168aca. 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/QZPEW2591393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89326230f6c5b7d9fdee4474cf88038487f7b887e5fab9560cab4e332c3fcf3c. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZPEW2591394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3b1a4dd67565d1dd539453e2f4438d1af14c7f47693d45bce546afdd7767ca. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:34:14Z), 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/QZPEW2591395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d91a9ec03d051b97a651d415ea95c95bf80d17f850403d8acbbb03eedf2449. 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/QZPEW2591396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6eb8253afdba661db7d9864694d1814618baef5889e843491e8c34ccf554d5b. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:32:24Z), 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/QZPEW2591397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7524e2291158ef1b85f536dd57ef929a66bcb3b5befc72e86c655c28cc5c4a. 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/QZPEW2591398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971978c80f9560b90cf66406cc4521bced497348255cfddacb71b88e94e21518. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZVEM2540290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971978c80f9560b90cf66406cc4521bced497348255cfddacb71b88e94e21518. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:04:15Z), 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/QZVEM2540290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7409d568d7b5809a566999dcdbca9b19b8cabe24a78c548ad0cf4336ef7d79. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZVEM2589989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e1e915e0b0d7d315288124d067f9fd61ee9de5a919a5ec6d3cad42e899d9ab. 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/QT4K52563716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82bbc3041e894a47a3182de905f62b7c37c22bcdbb3236f05e913747021a5bf. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT4K32548615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7409d568d7b5809a566999dcdbca9b19b8cabe24a78c548ad0cf4336ef7d79. 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/QZVEM2589989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bed3f3eff32215c475376593fe84c4a637d931650e1fbf62f35735f3026f082. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QT4K52515314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e1e915e0b0d7d315288124d067f9fd61ee9de5a919a5ec6d3cad42e899d9ab. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QT4K52563716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971978c80f9560b90cf66406cc4521bced497348255cfddacb71b88e94e21518. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZVEM2540290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f89d87ae5c1b742fd4b257e343d33ec23fdd8d948ed2a85912ad0283dc880d0. 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/CALVP2586102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0086745d3308b513c90d9de3dd8a68768425bec0a23ea7c5188e669e8fb0054c. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/CALVP2586104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2902f643e5b18e414589bfacb45467a8c7c47fecf5ec54510d1a312c9eb0261. 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/CALVP2586106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2809261fca8c99a2d1f681d940fc369924b931cd0d66e02bf0aaeea9a8a091f. 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/CBEYJ2533880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5d37a60147268271d5bbe4fae294bc7a71831e7958de6e337d5c5879caf1a5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:49:44Z), 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/CBEYJ2581163.