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 0x940bbc2f60881ef1c1b0c1cd32851ed7b82fe33fc6f2e318800f8cf5fd30fca2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd76a6bc-2f34-4b4a-8b6e-83f275ccbf16.json and https://artists.proofprofile.net/proofs/artist/fd76a6bc-2f34-4b4a-8b6e-83f275ccbf16.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 0xfc3d2cfff60b95e2e87f5e57a807da9ec8be9b6d68fc003c99e664d42f0d4a39. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZK6L2029054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d3aacb76ee13ec37a423c28b462c3f1d2ab0592269b1b86be4ac17292004d7. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:12:44Z), 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/QZMEM2016541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cc7f36df530aa8530687558664e5732e35f48b85427f4a510bc966951095b8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZPLR2036766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcacf1f1b9de008987e56ec290f2c5764d558b439a7a55de82782408caf2f22c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHNC2165427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41ad8b15518e712aa2aeacde651dfcd6c32b52dfde3fed080768e91a8776a61. 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/QZHNC2165428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9206759572bd8a9423192edfee269b22dd3cd4ba168200c2d0ad949e9544a5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMER2115234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d1f950c6e94da82b215ccc337a8c450e3305b88d83c69e78838f1c264df8ae. 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/QZDA82218106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1836c5f0e4979ae2d1f45a0793de6bdcfca466f65aa475228cbc6857af194d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:04:47Z), 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/QZES92250357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fa3a6c19e0ca3a960d4da6576ea1a2acfc0ab88324f39e270b6455a8536a6c. 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/QZHN62295043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22eacb067a72865cef8ad2bc5b52baad75d9c1bbf9fee6286b8679426e669a68. 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/QZMEM2255912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3761d9f2da11e0a13b075b5207eb61685a9816a1f00a531ace960335e8131ac. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZTB52215468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbaf13ff68aebbcd85968315c135d592c4f8a7b81c9466bf99b64f300d78fb4. 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/QZTB52215472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41948d5dff6ab036f29a036fd726c4c0faf57cd3781e8e56253a896d10c8b7e2. 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/ES71G2326453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcc5c03e5972e9d0df5231ca8f74f491bdf51f884b96f7831e7c4f57f2429ac. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ES71G2334802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770a846aac3a35af4dfbe6dd6e4cc835ef985d5e01e28bbcfbaefe5336bca9d9. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:12:01Z), 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/ES71G2401508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e55f09ae1ce94a398fd01f3a9adc116db90e423bbf7e3da62438e56e2ea9f71. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:17:30Z), 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/ES71G2406681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714ca2628d2f9e5b52d620b462ee3b10cd06446283169bbf3a9e699aa3cfbfe9. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:53:33Z), 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/QZMEN2487370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a8a1f8709a775b1e46b068a31938180c41d5688c45e16d5bb5ca66ed43054e. 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/QZMEN2487371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa0011f063a44740db84834e648789f0c4e00abb9a4909047ba170d2fd4664b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:13:50Z), 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/QZMEN2487374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca392b51107591a5bb1fd3022ac22610c42dc24a14aa4b910d9b218e0a738021. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/BK4DA2522062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60003f58b8a3361eb989fff5ca057090cb820ec03cc85b54c9a00807c7678151. 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/BK4DA2508952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a5fe709517c8f26ac84bb60c10e5a711d8a1d17e6d71e3b588a6e785c4405b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:37:01Z), 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/QZWFF2478900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c3d70aef2fa711152f70731c738818dce493ff5d38069ed406aa5de1031dcf. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/BK4DA2526692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0506f960587a63698d86c5f5487262758b608b8a2ace7e4203dbeb3238fada71. 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/DGA0S2403030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176323ee2471b20256c764aa176f85874dd97fa623fb1f74ec9938ef8d6bba01. 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/ES71G2415580.