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 0x1e58fc2d35fc6a10f5e36f3f207e43fbe13a9f119a421d9cdac3e60a9eebf761. 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/d0b5c9f7-ce88-4990-a974-5931bbea7c01.json and https://artists.proofprofile.net/proofs/artist/d0b5c9f7-ce88-4990-a974-5931bbea7c01.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 0xf4a97723e29800c8540678011629ffbf555289a0cf75bfc955f46cbc7c8c0c9a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:21Z), 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/JP92Q2418915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb4e00683784543dfb790febea233027a386fc31e3df31c6e1f410a23bb1c4d. 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/JP92Q2418916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566ff9e9fc2e2f304bbd80f5c1febdf27ddd41de31c62d093e2431a64da2f9b8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JP92Q2418917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24116cbd1accf864fbc3170f23273daee86bd6f5c782f6f159aebca0bc9fd90. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/JP92Q2418918.
六本木交差点の喧騒に消える、孤独な吐息
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33eaa8818d1914f0811dcb5eedd60ee8239957e8800eeb0821afa18be0372e1. 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/JP92Q2418920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe2facfd123f5251c4c873a975e613a17676da1932672a900e3d232cd2245e1. 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/JP92Q2418922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa799c14d57db7da403a2d78400d886713cbb80d6119695f25382c03d73e4cade. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:02Z), 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/JP92Q2418923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc456c6b0bd95ff45b96024b0a20c0e77ff653765d5ccc5eaf87c7900db1c82. 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/JP92Q2418925.
西麻布の高級住宅街に潜む、秘密の情事
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76550e61f6710016c58838e951a8262af9e0843ecd7397bc48cb7683fa083f3b. 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/JP92Q2418927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe583913ed0925b2b19654a6a847d12d03696553f11b1ea81f9ba0968d8a13861. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/JP92Q2418928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52886add0f97442f2f0c86378cbe180e4d42b9c61dd4a173c1701dc324ba8718. 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/JP92Q2418929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a11be5009a0118f6863d7dfb3e3b9304f5c42de2b10534c9fa052808bff59cb. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:58Z), 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/JP92Q2418993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b0b9367fc26ba92a2bf9b7582fcf69751ccc440bcbe6f13df3b5edb8e7c844. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:08Z), 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/JP92Q2419001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2dfbce5e988458579737cbf6746e5331cced81e19c7ea904807ef371ffe07d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JP92Q2419003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53bb0b1417546fa62d47432df8fac274d5c5a1f7e27f4c59e8a66fe4a3aacec. 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/JP92Q2419004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87317b6f6b49d6a2daf63fd956af65dee70c541c64e76f29b863873e424304dd. 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/JP92Q2419006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186daf4040aa20a5e83060b3c20770961401d250f0c5eb3e9de182b40557aa47. 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/JP92Q2420073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9919da905792d81a57df3bf20b620aaa7fb4eb1d80201558c15bdf3dda0e66b6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:32:12Z), 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/JP92Q2420078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666f0575fcbe97d64c2086863571924b4c3b5f451f9fdb9a284c140a5b1662f2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JP92Q2420081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899e52844a66a277c4ed119184a73742efc7656bc9d923eecfe825083bd27b02. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:52:03Z), 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/JP92Q2420082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473f1eea722b6bc431bc25be9928a57ebc2d1a52e649e1913160f3cd17bd208d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:10:13Z), 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/JP92Q2420085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14b9ed5899bc84d798bfe699d25b87fec293eb11d109bc9c4db3245c71049b1. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/JP92Q2423702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b4728ba651e7088bb2960a31b28e0fb4f4bbdf2aa1eb376edee9b39d2288b4. 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/JP92Q2527188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e49051848a9394dbb45e53c5864589cb05aec25140e9b7aa0e3968348ee99d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCJPH2575641.