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 0x446fdada4b5a84e3e41764f4d2bbba8ad0b3db15dc884f190d41a65158454236. 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/d70af485-7aad-49b5-91b0-fc16e78461d6.json and https://artists.proofprofile.net/proofs/artist/d70af485-7aad-49b5-91b0-fc16e78461d6.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 0x40bf17a5a8d146a3b7cc2b137a80f85b953b54e8d832e6466d57e74d3a038266. 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/BRNHC0502222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88b867cba099fdc94d17c3d74e1b7ca05b0afb6d3c8c0ce7873e611eb9ea1dc. 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/BRNHC0502223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5936d9c865d313894e6cab71eabf6a143ae6e5d53d788ba2ae17c44a2bd05b56. 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/BRNHC0502224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650ea5bb3c07a2e4854c650a859c8302f756eb590b51aad22049bcd3755bd1ca. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRNHC0502225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2030a051abf1a60d2cc057b2fa0f6c77b48b66260300dd48107bb29bbcdb1b. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:03:39Z), 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/BRNHC0502226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ccd995d1b57071f64fb5cd62cc3c47330f4c2498098730ab0771aceb2051b0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BRNHC0502227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40033da453e850bffca7d7991bffbbf97a625c6a2245946c45f60489a1b84ef. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BRNHC0502228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f448734937c497a99b8f228ee6651a554682b76aed381351a9fa3b76b2cef5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BRNHC0502229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75af893edc96d4849eeaa56b9728d59adabe070b91088dffd05b16c7f0f09883. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:23:43Z), 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/BRL340600510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3ed0bca02ecb02416ee67cf6277358dc18e28616f902abdc2200bf700b77b9. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BRL340600515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbbc0b6106f128e727e3c6cfcae9cfcb20e61ce52c54090b5277b8c4cdff119. 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/BRL340600518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9be2587dede511adad305a3432428d8a6df95a8c0d7036fe52cca7d2cc6948. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:41:34Z), 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/BRNHC0502251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bf17a5a8d146a3b7cc2b137a80f85b953b54e8d832e6466d57e74d3a038266. 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/BRNHC0502222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88b867cba099fdc94d17c3d74e1b7ca05b0afb6d3c8c0ce7873e611eb9ea1dc. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRNHC0502223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650ea5bb3c07a2e4854c650a859c8302f756eb590b51aad22049bcd3755bd1ca. 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/BRNHC0502225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2030a051abf1a60d2cc057b2fa0f6c77b48b66260300dd48107bb29bbcdb1b. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:11:12Z), 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/BRNHC0502226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40033da453e850bffca7d7991bffbbf97a625c6a2245946c45f60489a1b84ef. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:34:48Z), 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/BRNHC0502228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f448734937c497a99b8f228ee6651a554682b76aed381351a9fa3b76b2cef5. 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/BRNHC0502229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313ab7c1f6748848e229c1ace3a783b7106892687990fde4157960f2181c38e2. 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/BRNHC0500248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6568391998cc4b74f6c45c011a6b00efc6fda78ebeeb8653091943f6f1e3d519. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:59:40Z), 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/BRL340600514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3ed0bca02ecb02416ee67cf6277358dc18e28616f902abdc2200bf700b77b9. 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/BRL340600515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e5cb5a3d4711d1932544fafcad305a2aeed000fd6d34216a0322991915700f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:59:48Z), 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/BRNHC0502250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbbc0b6106f128e727e3c6cfcae9cfcb20e61ce52c54090b5277b8c4cdff119. 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/BRL340600518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef971cca88e78277bff91811d1c68ecfe3cc2578daf6dfb010847902d2fde65. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRNHC0502238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afa3e9c7bf27ca776d8f6da7febe5e9c47540a4cb48162dc93ad3f9bae140ef. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:06:06Z), 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/FR96X2145997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1d43b862f32154cb965f359bbf274be6344edc22adaf7491617b4fc8da8a6e. 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/FR96X2146004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b17f886166c2dd71321b05766ae68a2508952a6d70bfe0a70c6eac5aab794fd. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/FR96X2145996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afa3e9c7bf27ca776d8f6da7febe5e9c47540a4cb48162dc93ad3f9bae140ef. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FR96X2145997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95a797ebcc823d8fd206a74c88ef7612592c6eedc74047b8992134a423f937c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:56:40Z), 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/FR96X2145999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd051ec908e59ccff2a5409bb959baf2848c3999bce2eb02e3026743a5be837. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:30:02Z), 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/FR96X2146002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1d43b862f32154cb965f359bbf274be6344edc22adaf7491617b4fc8da8a6e. 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/FR96X2146004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cd9ac13411a032255c82478c524f47f5360ec690c013d9eb541f4bfc972f96. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:54:39Z), 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/FR96X2145953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79a6719f5cae0a76ab4b252196fb731299d0b779588cd1db3308a15c626c649. 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/FR96X2145956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311764333c2d6a4bdf4d89864ef60598c89173998930475e3dc53814fc3ac9e8. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/BRXMI2000423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74a844cbebaa688b2129fab1d83fb2d57dac035ad75d057d6225c091792aa8d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BRXMI2000425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5947a699ae8c4628a5fc488098eb5e3072bdf461730f8242ea4a92181c848587. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRXMI2000428.