1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xea47757f5ff908fc4054ba9af9cb5071b04a14d94aecbd09e444f37a04dfacde. 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/ad45431f-645b-4c8a-87af-e1d612908a4e.json and https://artists.proofprofile.net/proofs/artist/ad45431f-645b-4c8a-87af-e1d612908a4e.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 → block OTSBitcoinBlock must exist at that height 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 0x11f4914326537850571aaf7cacf1db6d55af2d49d6673fcbf6dea718c3fec85e. 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/US85P1931101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e9f7c5fde71cd8a6937602ff769fb9559ac2829b7173d4ce20d9c5e2a0c90b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US85P1931105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f4f1cd03fcc624e073c79b022ae3955b42fca30612974636de505a7a87dee5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:32Z), 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/US85P1931106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e986fbf5d6062cbff0045852da4fe97aa5a43b72443f8df4ef759303c17ad6. 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/US85P1931107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b1435d713b8b8e903ea3c2a9378f0ec1d17188cab9824e821d93a9fb1446dd. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US85P1931109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e02499fbc832d9440c444a7e88c2aaf0f8aed283ffdac14cb282e3359cdfd8. 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/US85P1931112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdac1f5662ec66825342e9a9a3aaa0b41323efd2c33926d160b1a1993bfad80. 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/US85P1931113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0d8a012a73c48ce74f2e613b07aeb22e896006ac0841bfa3dde0032f9adc46. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:06:41Z), 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/US85P1931115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010d490cf3367be77bc50a7b3c238db2277c3275fafd0f66858929dfdaab6b17. 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/US85P1931117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dc161a148480b8bff2202e981c61a71fe83e67186e1ff45347852718a13b0b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US85P1931118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598fe65a47697fa4192249e43c31dd06708313b3677661cbdb5bb10058312077. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:00:54Z), 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/QZFZ62348842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491f22439fa9d0967c501a644a1da373c2e9f2d617ee791272bd31234d0ba555. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ62348843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813aad15e99b46bf79e2c279fcf1e1c804c3237ee6e9278fa0ccb9ffba3d503a. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZFZ62348844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004671eba117abb957f07c5e4d15763b7cb304bc903cc79ba0dae24b1c4efbd0. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZFZ62348845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d78744124f82340edbdf7ef3a36f65967ff419635e3c8a23a908937455bce73. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:25:47Z), 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/QZFZ62348846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9e13d606ceefaaf5a8dcd741150dafb5466234e39c1e85a150f2ee2505a551. 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/QZFZ62348847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15992137c2d532316b3844e7dfca67edce65e5786ba135a747ec09286dded76. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ62348850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1694098896c32c9d468a224e1b24906d7c5048053723e23813ec7ab13b8d07b1. 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/QZFZ62348852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82057200692756d2a760d75dde4e35e078ddb6cd4fbf039b3db649bc832a917. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:29:29Z), 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/QZFZ62348853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd548f5129acff6f2912a22fefef405480315cda357fd84bfa6db1a779360591. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZFZ62348855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5d574a9ff9c1f8e6f62e38e40146bd7a3931e9b5120962e4cc2e1d41254df2. 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/QZFZ62348857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb479fff68461267550e261d14c763353004e81ee8e34c0446d187d4ab839605e. 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/QZFZ62348858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2792c0be495f42f94cda3993b7d576c93a91e98174114844ee69d75260293af1. 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/QZFZ62348861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a75f55791f77dd592f22d532ae9dfa8dbe45b23ea7bc33e9fb7b0ce3f78605. 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/QZFZ62348862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93408088ef3cb328d98e7935fcff527a30ec67333fc0d59171640d3ba15ba1d. 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/QZFZ62348864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912f087453f028c418f5d34b9ebbddc2067a591cb9631db9ace571ca2a1ca6d8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ5HC2118611.