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 0xe6ddd4ffaeea69c0af0c4a0a8a98944c473fcd38dfd0ee982f9b0505655512a3. 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/b529de61-8e3e-4483-9531-1eb882db5260.json and https://artists.proofprofile.net/proofs/artist/b529de61-8e3e-4483-9531-1eb882db5260.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 0xa617ba6fab863ecd96e3eae79f19bac27503902f06007bcfcaba044a6f5e1897. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZNWX2070671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae03ca9a869aa48bc5ef970bd721b99be73d0382fce88690fb0c5ca198e4d973. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:25Z), 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/QZNWX2070679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc1565ead75b92537c523744c4ec5ce8aed66597a093e36b19d01fd03c79be6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZNWX2070685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb61146a174bc6b831005fef10ff3293f5e414d91c4e55ae21136eec07427284. 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/QZNWX2070687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7838bc6f67619037179f26206c16da1803ec7ce393edad6adbebb50afe655ce8. 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/QZNWX2070691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d34d0a2d8ae9ec9d2df6e7b25703dd35fd7f5d525264cebeff320aa981dade2. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:45:46Z), 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/QZK6Q2199150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa3412ae1286dcfca0a9ba7b035ce5620ebc06937ffb4dc0982f3e81c12ff82. 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/QZK6Q2199153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389bc10d60b79ed8909c534d8a570a8f2f059a540cba6b081fe7efe5998bc59a. 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/QZK6J2114707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dae78704faf7c00c182a02a84cf6ac9bda68fdec5002e036593e5806367ead2. 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/QZK6J2114711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331480a9337099029d5293d94845a8f0f229fadae0b9223f882fda7b66287fc4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZFZ72223776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249925dd7759e127d0c573e0993582d986400238b728c1efa5dad962d009fb48. 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/QZFZ72223795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6316bec2b36dc9bc28993cd429e1cd4ae7a7c4ac39e8a0dff7da165566d57d31. 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/QZTAX2227036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb284b7a21ac9c08e6cdbff95800367addbd7179460cbee1dabea104eb0d432db. 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/QZTAX2227037.
Rond De Jambe Par Terre 3/4 (Op. 64 n°2 Valse in C♯ min)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bb511ad0ae21d583a6c406cf5cbf5266c01d67c3a4fc3a323df87ee8e596ed. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:00:49Z), 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/QZTAX2227041.
Rond De Jambe En l'Air 3/4 (Op. 69 n°2 Waltz in B min)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad045a53300c5608ca4c9484927c53a97929d5ff8c13d37c3247fa130539be1. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:15:21Z), 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/QZTAX2227045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f077ad33e802319ce9f661b5c527ece217cc009191e31d35202fbfe62c03129. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZK6F2362160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3642b1300d088c0e64b8feda001e88a662e0c69375c413045bf085cc064f841a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:10:41Z), 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/QZK6F2362161.
Battement Fondu 6/8 (Contredanse Op. Posth.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab241ebc8182cf2af8d34fcab4d73314942654729e7e798afcd00a3fcd149ee4. 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/QZK6F2362167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e549395a2aa36dce14722ab80d6b6a9d6ea7d711fc935670718a2f697f46ad. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFG2360911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8c73963674dc8e37448a15081d4325cfd2293def991d8813cd235681e31929. 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/QZWFG2360913.
Battement Tendu 2/4 (Hungarian Dance n°7)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24328e468774bbeb9cd79adcc22108eef1b0e40bf11cf6961ab1d21d15fbefbe. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:34:29Z), 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/QZWFG2360914.
Battement Tendu Jeté 2/4 (Hungarian Dance n°21)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4301e7d48e751e399822ca54a68658fc5cb676ee953a93c66a93d170e29e9fd. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:10:01Z), 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/QZWFG2360915.
Rond de Jambe Par Terre 3/4 (Waltz Op.39 n°2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a6006eb67fea19d446e45cbcbb893a36005649466ec32c2177c9a8e955fa90. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZWFG2360916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ae428112f5149678e10b64abf2787dd72513f09d470ac078ca6227e2503451. 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/QZWFG2360917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf305c7e816259c1d5325de78bc7852267d54be39efa7df4023b58b2e08bd7ed1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWFG2360928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75c8b24ec6e68e6f2a159a0764042a7feb62b70576fee6645c5e5d5abc95c9e. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZHN92570915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06092c4a2855261dc1184dd317f431fc52d97f66ad4d6daec468675d8139f60. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZHN92570916.
Battement Tendu 4/4 (Theme and Variations Op.18b)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f8343d55526338426166f3dec91146fff021283b231ef42b1ea0c421f2ddb4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:06:47Z), 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/QZHN92570917.
Battement Tendu 2/4 (Capriccio Op.76 n°2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d508912f822308f006b030a2282c0e6cf81f4636255b0bfa14c3938dd37190. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:47:21Z), 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/QZHN92570918.
Battement Tendu Jeté 2/4 (Hungarian Dance n°9)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f86a02c2dcfbfa8c937fd5c2078563eba92a6de7272941d121ae186243e67d. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:37:16Z), 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/QZHN92570920.
Rond De Jambe Par Terre 3/4 (Waltz in d min Op.39)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bd9d1a7aa52e757c1c48e6f498511936b07de9fab6b6b5944410b0f9452387. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHN92570921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ecc8af363e90d98ff03cd25508c1ebc4896b89a22e284ac36369b46d0c7a4a. 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/QZHN92570927.