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 0x1832567cecf195c562646f007bdc56a7aff5445642eff8d860431be4b2e11f37. 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/688095fe-c1da-4b1d-ad24-85206963ffe1.json and https://artists.proofprofile.net/proofs/artist/688095fe-c1da-4b1d-ad24-85206963ffe1.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 0xb907ed93798ad3b9a27f3dfa166148ec2568b922bed812fde1cf40d1eb750099. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPTE01301630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43df0a4b99ba12778d556c77bb51d47153ffb02515fef2b9aa6aaa517fd27a1f. 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/JPTE01400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58a00a2180315de4dd41dbaa2d53a39a901c9a90bfe6060fec195d94e5ece4b. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/JPTE01407080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4990de74fc897d3604f7783345bc54d5bc68c6e109b9d1dea60ec73488ffb7b6. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/JPTE01407090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9652c6158878dbc5b62586674139227cc1e87e0eb22fda27236f0a95535770ea. 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/JPTE01601660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e13ab6de335e676275db044d59a468a9fcc92aec27518d944a7dad9ea84454. 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/JPTE01701980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c54757eaed730d586090b66383219d68c2883b1ed45ae2369fd3cd166a5969. 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/JPTE01707240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4007971d356f2f39d76197580e794ce72bf56c94b3d85402e746238d5e017c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:41:17Z), 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/JPTE01707250.
花は苦労の風に咲く/めぐり雨（ラベンダー盤）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4678b39afc1ba16d4dabf7e5f01463a608e0f3300b625982cb07af91a9a13f0. 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/JPTE02002870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c772b5047ed4a45224e412cdedcc8e8ea56798f9ee0b5c28f3357cf64e221e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:21:00Z), 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/JPTE02002880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa3aaa090b7e8720c90a8ec5f1059db2f6f5fbbf159b8a6b21ba9b3526c6001. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPTE01905030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e025f2cfdb26c6ad84606bae65bfad31835d712e9370f5d983a20f0e799c47. 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/JPTE01403770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837ac7fe25e3a32bf843276f5875a0ca864aad87536d707b435376af286fe85e. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPTE01810570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe860e7723e61eb874aa1db03f85197917e809a161c43aeeb89bfc7f275b4f151. 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/JPTE01810560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d9ee6edc94187aaa74a54a61e77e77d9c725cb3d7c572e48c799eaadec8a03. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:41:08Z), 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/JPTE01903650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f936ca42b94d29e07d6d324a18576009687105f21ccd470b4bd28233ac5ebf. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/JPTE02304180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7703a73d8ac6fc173fddfa7d017ce4aece74114ff1e781990cda2d347aa2e483. 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/JPTE02304190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b65a8dae4d9a5e41431351f7da4c3cd9836e8530d1eb6e54f8e8b13f27bda68. 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/JPTE02403300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f542f884982604ea1f14c38b41737f7258f7ff3ee1d9fd5b986221ee4ac943. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/JPTE02403320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c60316e1f8ad7a921b7465f5169baa8983c696ba2ab0393ee17fa891413f519. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JPTE02501970.