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 0xe3913e36176c580d6090b92b3efe256edda03881d13670de5e2de0159b34b4bd. 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/caaee46a-1ca4-47d6-b0df-5ca8603b020e.json and https://artists.proofprofile.net/proofs/artist/caaee46a-1ca4-47d6-b0df-5ca8603b020e.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 0x8af0b661950e8a24d37d06920a0bce61f8fd9ed20b57d91eabd17ab3d1fa3b59. 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/GB8KE2208034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d791f9cc69413d3f3c0ea1ba34d853476e7854085e5f536c9d5d9526ddc021c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GB8KE2212762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba9b01e6aad52a0e51b588b8c3e3e7cff083aaf1eb64c9266690e4423e49d91. 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/GB8KE2304896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc76742733f62eedaf7b79978245a1292e91e8d1880bb1ccf1fa073ecbf78f1a. 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/GB8KE2305795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13db642d5ba1fd044f99f1de707306a91911a340ba18f8dd509d0df3fc83ff2a. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GB8KE2311677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8705123ce551861e0b2a89615878bceb2f328225da40c1c649166508aebf500. 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/GB8KE2311679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704433af8840617aff870853ee035c5201db425a4f4d7f6e35cc17ca07b98c15. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GB8KE2313244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4eee61f7ea7f6048f3a18a733dddfa7013f9b4512bb0fa6d61270bcc129ec9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:31:28Z), 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/GB8KE2315233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59875c57a33007689ca77813c07a31075658697d4ff196c7d0dd54503551c43c. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/GB8KE2317106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03833d834b3bc69d7b2ea9636be8c92c868c6c6be174d8f7ae3dba2fd8a4730. 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/GB8KE2327436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8636ada6bf6371982c2d60d02fa49e0cfd5ed6f1676d530ccfc1e7cbc2d8b9e3. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/GB8KE2400536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff447254778fe3eef9a4a3109602f8e8285a176aeb8252990045606062a86743. 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/GB8KE2400537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09ffdfc5f1baa63ba3295056f53c856a32970eb3b35264e5d07a208e38d6f1a. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/GB8KE2404466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed77dfaa5a4369a4314745e69d96719c3f757b62216ae56120ce383d6b6000c. 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/GB8KE2407862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48cf89ac45bf2507b8b6505ca1797db6507b46701309d50e288c7a3f47f8589. 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/GB8KE2409028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8abee6a4ca1c16b1c1e91a9cf174d1371e3399d89ad3b42edb1a32a0bac45dd. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:08:45Z), 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/GB8KE2411135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03eca423f7158b25b29e76ca72ee0fde92b9012073c7bb353a077c091928ad5. 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/GB8KE2416458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f644b6321ddd3776fd1bd0f3acade349e734e9ff672d98ccf8777f414c87e0. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GB8KE2420659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725a85485590eceeaf345ed5563136128727796599dac56e14b7d0efa47f8951. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:27:02Z), 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/GB8KE2501748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f4f0d32f1e62518b1f9cc467c89689a347e112b27b1d53c6d5f10574710cdb. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:42:56Z), 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/GB8KE2503318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f70439bfac5e05ffe7949c56f0a3ff026f50a99c1b4e636e27a73337739c31. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GB8KE2505301.