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 0x3bbde94ae8977de1eca438874bb9c5ba0866d1ea51001534e5800b2b8cc18088. 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/f02cd5cb-5562-406f-9a79-acafe92b3f34.json and https://artists.proofprofile.net/proofs/artist/f02cd5cb-5562-406f-9a79-acafe92b3f34.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 0x36616d1ee61daa3b9ccba44156a48be7604c6a5fff65dba2920bad9e58f61064. 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/GBSMU7949302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d1f80bb83d842b28db4643d998f3c8d0bef926808859d488702adb7a5dc726. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:42Z), 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/GBSMU7949303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b88039d444dede65a1eba22899f31dd4a2bb6b9382d16d63f32f35e5ed363cc. 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/GBSMU7949305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b0e9315512ce4bf261131af7b20393d0736c3236e0ae93f1d41e1a659f22c6. 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/GBSMU7949306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ca95e00dd70f63f9377a3d60dd230a8cf94634a7c0d4e92470eaa29d590083. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBSMU7949309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6d1cd60337bb809464462738b7a1fd2d97289dc8fcc821358b89848756622a. 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/GBSMU7949311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f9a0f7d5445a32bd72de9152e1956e3e013c6af73415a70944743968c83a68. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:53:17Z), 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/GBSMU0041421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e38f013f761aaa55ae52e8f39af44d02af4d56bf5c2f83a30fc7439c1449359. 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/GBSMU0041422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde2905864f5d770916eec90a5de8ee1d248057f3b8c26f8772726cad7efb13b. 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/GBSMU0041423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6888697ecf3c1a2179b38469110f6d1c5643adaf0d5d821b4b86eee8296f9a15. 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/GBSMU0041424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a76c6ba162449cb275e7242c4f256e2350dc5e025e9be69476c8d2013192fdd. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:44:48Z), 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/GBSMU0041425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1832b270a5f6219223f88eac41fb452a35a781c3976754b7e551ad79c116529a. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GX4R52225890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8483c3b0abaa5630d53185156ab0cba09cbc26166e833fbcd2a6480503b3f685. 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/GX5MY2403885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0c4cf122db55a1e10315f12bf4171d881102bb77d5506cdb0bdc08bd9c3361. 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/GX5MY2477723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8a1435644bc49dc755074438e8982b09d74aa9bed130662aa220bd64218fe8. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GX5MY2492820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2989fa50bafe13a225906ffec6717f704436b3f274d62314885945cf1ac2fe4. 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/GX5MY2453023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c8f2aef2edf147b19670ba85464b9621513ea4741760b0c0bb22adeb963303. 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/GX5MY2457442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52468311be1ed6334328742fef1edce3aff1068de8743bd5dbe3e9c2b9950ca0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GX5MY2401273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4057c81764627ac74d15c1444420746f6db810f1bc1c110b49af6afc6b81f310. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:37:50Z), 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/GX5MY2427301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0608df2b11ded510fcbbf55d3f3c7e9bc1d245a216c016b931dddd51815153. 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/GX5MY2421233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a015de7cd6454a6d4179b4add1164044a4d6eb7e8d6ec098f55729f909f4beb. 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/GX5MY2410581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dcc1faa8b89cda58d7be7c26f00b33c6a160fb705f44def165f42db9046a6c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GX5MY2440470.