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 0xc1e67df77dd04ed02aae894e897492afff80a9093e0cd54dc33814459c4ead37. 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/0a2aab1c-999f-4106-993b-69c2beae0c31.json and https://artists.proofprofile.net/proofs/artist/0a2aab1c-999f-4106-993b-69c2beae0c31.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 0x8eeb5d67aa1ccdb72290e4b0e3653110c81de916b52bd00d2e74c174221bb55e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE62M2393405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25324a9a459a8254284647da54cf51afa1e5e6a072961b46221123c642c17df. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDA72157379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3da13f8b66ad32078412210abc45073487dfecf11f39e9f3a2a1c238b6d108. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2400341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0930010ea9d4ea6843a707b1ba9bea303ba92a1736e60977d2f14d8fed9fd7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2463715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3483f1f44a89647552034957229c69c5774516f7a3df0c5d7252d2a13756e7b3. 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/GBKQU2455821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e10b460781956372d581c3b93878f3ebdde21720d55ced96b759b9122b10ffc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2423663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe381603dc2fb4ec8b2cc70b4e999e4915f0c900bee3c38cc50f9c06dd4e3a883. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLT2H2400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf68d7b59687d394833e9bf74bc12f783cbf8007aeb43d8c0c448bcf1bf2352. 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/QMFMF2385819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3999c742092512f6aec33a90d8bec3b15ec89427f3403b9ab3519e60b8fdcab. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2301021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d92042db2c15c35351d59808fa863d9da857a371ad5bc630190d7130fe0775. 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/QMFME2357842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45f75e5054aa55896cb2f52c43b1eaa6c7ed453780fb5f9b0d0c60d133f8277. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLT2H2200836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e68208e62516f7f0855d252c486275045a2b55563037e1af2c9c41b5ea4932. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZP7F2260647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36f5bac0ae1ea8096ce8d68b26582889ee12f1c82375cec38f0b3bd1689d950. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMDA72177201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0279ee9de247cf8e767a9fa02afe07ba8c288bbadf0634d6bad31cb66a48c47a. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZP7F2133171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b755d44f276d273d0366522914554c4f196006a724274f2ee343f5d5b2cb49. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZP7F2116390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c770a5dec93fd563c35aea70bca5503f2b540125702d93204bd650eb6e0cf59. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM3DF2463251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827498f6978b5e57278d276020c966ee3e9b692b21feb2940763988217128fbf. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USANG2435226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a4f577a4cedbbe09f7c193fda224ec7e80b152428ac2e160c3c30e9f34b8a0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM3DF2437457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8d26e0acc92885c7c53a13605aaf0d3c000250ef3c6f7a0bc726e5e7b414fb. 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/QZTRX2566001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed780440e699f6dc61a630a824efc4a857a52d3f072b9c0696f11831cf673a2e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2517804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc67b60aec91236e928023860a6c4aa325923bee99eb61fb5027133060ce52c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBRKQ2524023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ae88f586d88d78ec5a7e1e3ff2d3a5b8bd84b954cdaee75ca2ee93f0e3e6fd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBRKQ2524022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313eb7a1ba5d8702296e674eaf67104e0b2b9425c80b6d52894d0c21d0f389e4. 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/USLZJ2568617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0836702bee57543f5ede3f23704ce6ae2e0c312f7d4350cf522f3331714dc5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLV62422457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd26e5aeb2a84b8dd944453ebebf33812954f61b31e04f474faedd11b2fd496. 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/QZZEB2486702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe318f367e523f2ab49bc623353bddafc50bfca7314f3fb2a7ab4944c9274fec. 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/QZZEB2402441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84391eadb02a82753f231103ac502f62e5c11190ce4d9ad2e6822ccb144d5135. 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/GBLV62414450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824e4c40816db7e8b0ac8f5b717d3cc0f148c4880bb02c1c42183bc3cb0b2428. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZZ8B2498069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9a81c6911300b190da7aa7859a9bcc9f94930bcba1b94c3bca9914aef4d400. 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/GBLV62402426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69b1fc73b703a09a2458cd6a10656a7fbcd5e8a0c4b3932e958f98c1b083d36. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ8A2480753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf877b526e9b97ee8d3375e546a043b416c429d09fe039065ab8cf5e0d5e7991. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2491845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348a67604b413651ce2362cde70334b606522bcdb34365e7dcda26e3fb88d56a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEH742406118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f89a18f10a9e8a67bf8a23a1c4cf8313f0bc4349a0d23f9d53938ec7c3950e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2464314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14012921e2eee3c4e4bb70abea995cf6b8830dcffd7d703d1ff4cebbd23bb762. 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/QZZ8A2519871.