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 0x622a5eedbd5dfbb20cf227c529d666a02c4b1acf41f1854041fc4d0c93e5e6bf. 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/6db63aaa-2a4e-428e-8377-e53670a50ba3.json and https://artists.proofprofile.net/proofs/artist/6db63aaa-2a4e-428e-8377-e53670a50ba3.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 0xc1c2a1accf1590ae41a6c48919f203f12f1479189e7779cad1d67dcc12effb4d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/TWAE31700666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c9632ce4c55b17cbc883991f33c0f28d24c2a7b316a2a1e1c5efd8a2b1bc64. 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/TWAE31700667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768093d39d53f3d48fb55c9170d9633be97982e2e93cb316363db554841e4c42. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/TWAE31700668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9551b235a4d8ba59c7ad71cb82463e51e745f38053d04631b33675e7182f022e. 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/TWAE31700669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0d4db2eff1290931ab9cf44077c857d95cd0de6f249ba33778a50faa3ec444. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TWAE31700671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44833ddd9e7b296385774e08b8569374feb74264eaa94c6582735e6622e6ce8. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TWAE31700672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abd56161916819ab7ff078d98634344601c2178de1ec5ab8eaddb5ea12e4feb. 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/TWAE31700673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcee70ef6712812b61be78fef01b729b7fd6fbf6f3c7694e0d5c3b41017147e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TWAE31700674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c0d17d85350582fa24d8b228d2b9ae44dffbda7ef00e75f9e1b950d166f982. 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/TWAE31700675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373d57dbe24948442051bd07c15d6e75ecab435fed2450ea3bd1962459a8de50. 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/TWAE31700682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146efae3c3eae21de0edcfb4c2bf2a6b44048446774d9024fcd174d7c81fd0e9. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:56:47Z), 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/TWAE31700685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c859238621c6544e6063153bb18ebfe9cf256d09d7d7e959164494fe1ec4f6e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TWAE31700687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6618c9f4b731e16417f9ceb92fd2ce0c180eab37c41c23a763b555e1179e04eb. 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/TWT551700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4368d82b56ddf5351d5f10b6291e86ded0eb8ba8b8e88fd6da673f04e51bee30. 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/TWT551700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc35e1c18b2a3b355c4f425e49a08c248b586944f1c192fdbabd553c992abaa. 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/TWT551700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6961718043cf7f13bf10db3668dee1caeb6b9a2e7c8a56337297082fe9551259. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:17:48Z), 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/TWT551700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4405e49943f4c6bb41f81adf6789a5912939d3277f435a5a681111357e617579. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/TWT551700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3b9b7c1dd54332a8245fe4376ae805631a525ca9add964d74b4650296a5a8c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:48:07Z), 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/TWP011952102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07143880f5d6224810af5d1c8a418122620a11e53710bc1a8ebfb825a257f2ef. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TWP011952105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bedb680a2659f78d6989fbeae73b1cc000200a334210a060dcbda6435f4a2c0. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/TWAE32302107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf210cc9da2ad986db675ef1ee8a88af24aa8db33c451df8cdb0c81157bf21168. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TWAE32302040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c5a609f5508511efcb9a0fe80771f23adaeae1240c38d0d7011093025194db. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:33:31Z), 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/TWAE32302109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e61cbad3456d82484316adc1edaac38fc75a4545ec76bfaa2792a3401ad94f2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TWAE32300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e79074cbd5c3b75b39d5fa4618e9cea0c7d59f17718c21d2ff3d783b74c958. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/TWAE32302110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4624aef66868df761ca930f1f161e4314ae1355129c8146262a0d33619afb356. 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/TWAE32302111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7cfb605e48c614920fafa3a0cc06f8e41f75ad30b826a94ac99eb430e51ec8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TWAE32302113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8e73f3ca040126ba6fa067bf5d43fbd361b8f30871a522664fbb9c6ef9bfd4. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:15:13Z), 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/TWAE32302114.