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 0x39309e54c00a9734f5926001627ee81dcbecd12f2389ee7f00256abf14b0e4fc. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbb3c844-f906-453c-bdb4-5bf436deee61.json and https://artists.proofprofile.net/proofs/artist/cbb3c844-f906-453c-bdb4-5bf436deee61.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 0x1af5487bbf0e43ae8f577b4187500b31d1613134aafa2bf931266db24d3da5fa. 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/QZWFL2475358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300b37740cb0a59bb24d24aec49f2ff3f45195ef2ff31622615a543e71c4f2e5. 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/QZWFL2475359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8e54ea836cca5f5b0e4809e836b0d17e39fa3ec8913ee01b141cc1da3313ad. 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/QZWFL2475360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa698a2558fb401f14681d01a762b6f14f6a55accbb6d58461de96dccfaee6c4e. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZWFL2475361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a31665f8ce1cad8b6399412afe05103ce461d26542647b02a0298c95683131d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZWFL2475362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0037f272038bf65a8cb3bf6ca56287ab8c93e531dabf225db91c6c98bd55ffd. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWFL2475363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a4c86f3542253d095625f2225116d8f5ccd25f4154820626bf0a1cdd309dfa. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:30:46Z), 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/QZWFL2475364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe02f7b28cb72866ebeb40f0ba18803b8d0882ffebb25d6f4dae8bd53b54de2. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZWFL2475365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96b601776ac40587125f2beca8f4deec3ca56ef6dfd99655f774e3c6456e4eb. 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/QZWFL2475366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871459b9df911940490b291643ad9f10ac989d684b5af09a462498aa07eb8fc6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZES82523648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb029bfeb9d408c53b3e03f5378e59702f977c68ab9856d0b7b48ce69f02967. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:05:39Z), 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/QZES82523649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc371fc784ef8110ce81be3edc7c6154e0aadf05848b1fa319eb0e7f027bca519. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:47:38Z), 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/QZES82523650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a29c0d7174910166d56ad92de99cce8866e58d73a0a20a3a973304d34d106a3. 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/QZES82523651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b0f3c19d9eba73e14e5f75ad7d0aa4c890a09f6708106a9b216802e8b113fe. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZES82523652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db969e0ca634cd2ec88a63564e6029f312e33b7a0a15204c39dbcc4ae19c73d. 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/QZES82523653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0336211f212c26383cbbcb3d0f144b0c070e825c38d486542443764f18714553. 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/QZES82523655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9186bd942b2aa9dab9e0f02d139d962a3ecc9a1362cee97359822d23b9c92fc6. 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/QZES82523656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4118f38b31f1b7811cbc89c22dd03091b03398a1947cbe23779287e110dd916e. 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/QZES82523657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932007be1d2bf5ab4227494a0a33a36499f98c2072596254f6a05e40300f9068. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:29:13Z), 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/QZES82523658.