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 0xa1f278123646476a03663a64bc1a44239326a5e24817a178e3053d236f746ae6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85a580c4-a50f-4923-9486-2e2eecd74b8d.json and https://artists.proofprofile.net/proofs/artist/85a580c4-a50f-4923-9486-2e2eecd74b8d.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 0x726b1780c317cf8b22abe0beb52151ea32069ff8921aac4231c96a536aeae8dc. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:49:30Z), 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/GBLLT2023933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4118fd7391c33584e4ca9cd2e9a8e40712b7e77287ec78b61e6dc06a7f63a09f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:58:00Z), 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/GBLLT2023949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f35276506dcaaf2d2912df3d520edc383e07771f9751b7b7283f310bf2b6af. 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/GBLLT2028862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c9a69dc837e97dbe886cba52f8febac04d2fce38ef53fbab6d29871fa49abf. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:41:01Z), 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/GBLLT2122323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf3b6155292c6837b77a7650f3ba7b2618b2b3e785132304e09bc8c95fb3740. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/GBLLT2127410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee27eb46f5875d2f32ff57553d2357216065b372e808940474e6379770de34a. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/GBLLT2130688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397f2748844b8855cc4e1d460bde133cf1c938411298e1bf6936dddaac8bbf49. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:01:26Z), 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/GBLLT2134653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdfd6701cca50e3533c568e554c35dec3f60c033b63b372a733ee1532b7568d. 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/GBLLT2139823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d211c965ee516a2913e5acbecf38e614bcb21ce8c74233c6327d56cc814ea6. 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/GBLLT2204526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa262cfd7c3da1ea7f7e8dc509f313ee1c6f18a56c84f370cd735b5b44dce4a22. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GBLLT2251013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00cc948cda357a74044e2bb8cd293d5afec2c878fe76707ffb3d78ac007abd6. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBLLT2251994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4f8848b2d4d38353fbbfb82f0c730076a735b0519da5f753c81a0455c7f112. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GBLLT2251014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b710e349849e0e5cd2cc28d6a8e42bfd469ff030d0d9d1ab21539d437df077. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:39:34Z), 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/GBLLT2255015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccebfd0cece64a74ba42a2592f7ab4b70918855c685fb232401a5d69702e32f7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:45Z), 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/GBLLT2257467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70fd2381d4b85df233d862f946a515db3c9e54d14036bbd735821a96839be31. 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/GBLLT2312511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b2aa518c5608851179d04b46a70d70113b315090d19e0d3d90be0875549856. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBLLT2308481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edc7b8ca33b0847e1fd5108e64ec3ecd231dc4eafaa4ba33376187ea0f5edde. 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/GBLLT2314893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f0a51680a697fa32ee33ad7ae96443f5fda9875d719c637c66a0fed29a3fec. 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/GBLLT2320994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672e6ebcbcaf6686d6bce106df084a5846dbe8d4415388e28956a070596e851a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBLLT2346711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab21aae00d218f96f174b9eee50bb2f652049b66b9b3dd02fe735d6f3b9d106. 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/GBLLT2345772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b70bcfb678a58274af9c6545319788a2c1b78cce23ef8bfbe7b13feb760bda. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBLLT2352843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b795142c2e1b9970619cff112a2705a4733c27887ce4c0d4629cc87a3cf447. 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/GBLLT2402819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0112f83b3d7d85e6245360332605f851b0db4c12a0896d7eec92420186db643b. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/GBLLT2408811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ec23f3c2f27c5597efb0cc4467f49366ed5953c56c22d17594c76bea86b43d. 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/GBLLT2420061.