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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945d9866c39b2679fd94234ac41cf3666ad9d156c4d37d7e0e750c4484be2fb2. 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/b2ef301d-2941-4aef-b46f-59722985e926.json and https://artists.proofprofile.net/proofs/artist/b2ef301d-2941-4aef-b46f-59722985e926.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8910a24e2e8fa7f52f62138e53f50a56bdb9c4e95d1dfbcc765271a53b6d9a95. 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/QZ4JJ1687422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e844963c8d8c980ba059a08f02945ede006d72c6fe0e29c558ed4dfac92b01. 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/QZ4JJ1687425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f4e8af2cf709eeb5e929d131b2e1e7a5d0c47412ebabc6836e1255e55a5680. 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/QZ4JJ1687426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0175188446333347faa157f1e3f68cf9fb9849c29e6ca3c52841441d8c3a60. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZ4JJ1687428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d69bd023310a96267e332e70bf8ee95e710212d99ed5cf8053397810546ba5. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZ4JJ1687429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc031690f8b4791f380a0430739ccbade7babec3ca3476471a2e3b57730a12d9c. 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/QZ4JJ1687430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa36d1ea1b3a8388f74d7ae84237081e31baf1fd1692b05b2426ba8e54d323a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QM2PV1705926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6a27b4c3c62e5ce19fd79be8237b663d7f110fe4d811fc91b9c88cde5e0164. 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/QM2PV1705927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e57ea495b0c306ee68702683450a6398eda0894ca1da09d800030c0079512e2. 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/QM2PV1705929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9211c345f96d58c5335feede4237cdea02b954d7102ca2c40ae1398230b022. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QM2PV1705930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef72c20137686cb8b96d513113f431d219b70985ece18c7227b72c42df925d2. 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/QM2PV1705931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ddaee55137f38f09d4bd7db8e28886f2bfb9f551e90c9ace486b816df3e46d. 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/QM2PV1705932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f27e6d92b2cb68b3da708d064ab72a2f44a8e50620f4d7be268bc39b161f39. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM2PV1705933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323c320362e79802fe24b04288d0bdef62e576930e195968fc3a3f5054d479ef. 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/QM2PV1705934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f4959f05980fad44a952d9ba3a0d551aefaf164c4c914830f626cb602f9ea5. 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/QM2PV1705935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddc33df415839e31190205a2f2918de904b42e0f094d5af2b942a2fa29f596d. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QM2PV1705936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bc58263316fcb7865d40b21302ec991d432fa84f4997ed71d37bc620ac8531. 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/QZ9Y21713037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af58c1407d5a6eaa3f37ba9df6067e9b2b39b8bde43377b2bef965013a83cae. 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/QZARB1864901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c1ddbdd36ff7e65fde352e821baff5856083a906995f7ec6f43ed63f11d107. 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/QZES71836792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141bf32b52ba451dd4724d77793bbdbf5de2c1c7c9b171ac4235b4c8de3c15b9. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QM99V1813504.
Jam in the Van - Ginger Root (Live Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde01a93b0bfd7dc5acf9fb73a9405f4cb1dca1db91fea56f47b87595c142cc2. 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/QZ93L2008715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78282413c84942777ccf8e917a52378d166a6e5dc1777dafd90ffee6035e8217. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZ93L2028851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5332cca485e818255f6132b7fb69da07ab95388c73f65d409c20a73b396585. 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/QZ93L2041035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d21264d62afd54c713d405308e95c43f6e0fe1b3e49822be0c83b31b77976c. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZ93L2047752.
A Cruel Angel's Thesis (Neon Genesis Evangelion Theme Rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c5dc8d5485dfb4ba48a9fc27a633a734efd83bc1ba3fb73142f0f4e5865251. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRIDO2211707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81857f16181b31bb8daa95186c99c673650a9187790c1acdedd5545e9eaccfb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPV502100463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81857f16181b31bb8daa95186c99c673650a9187790c1acdedd5545e9eaccfb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPV502100463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39e590c0c6fc9d009309a02ae27105b984de9a3f4c539d2ac0a77852d62f2a3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JP92L2203850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39e590c0c6fc9d009309a02ae27105b984de9a3f4c539d2ac0a77852d62f2a3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JP92L2203850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0933487838fc13e1840ac3ca4f0b5cb73813fb51825e43b5ca50ccf0b6d99759. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPPO02303581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0933487838fc13e1840ac3ca4f0b5cb73813fb51825e43b5ca50ccf0b6d99759. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPPO02303581.