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 0xf253c8a6a95c9f27706e33ae84b92d86c5f0ad88d3e5be75480e51f3483e030d. 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/824129a4-cee1-4746-8245-635fd30074cb.json and https://artists.proofprofile.net/proofs/artist/824129a4-cee1-4746-8245-635fd30074cb.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 0xe0f4d562e2da57da874ef9fd71bb3f92c4980baca3af42786c444cae28f10271. 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/SEYOK1606202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a10896f2ea5ffaebc8402dd49c5a6852a54c240f1051752afc978ba3e03368. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SEYOK1777960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501253060eb03a4dff7264d4b6586dc151add395b10014224f094b1cd48b34be. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:52:41Z), 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/SEYOK1777961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886ccda8ea2f99b27b2d0ae16712ae132d4de772ac6deaaef8ead216e20a591e. 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/SEYOK1777962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068dadfb33c9672265a2fd9fba049d87f4544efa62fa0ab1e5f06438ebe0a8da. 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/SEYOK1777963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0d85d3a1cafc9dac104ef19912774a702d39a9fcfef818dae1d63f77cf71a7. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/SEYOK1777964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de9b20e11a8cc4705c26ad30ab854a63eac1675261c8f2d4cc03b533bee10c0. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/SEYOK1777965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f642304c9fc7ca5bbdd0ebd3af5c23671bb5c466c138397de24c591e2392cac. 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/SEYOK1777967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0c00c8244a3c12a4541f187e49402457d97d5a8a81a087860bafb1ba03737a. 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/QZHNB1973495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe0b8cbdb626f730800b9e0e015dc636b96cb4e08e508ddb7bedbb4dc95418a. 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/QZFYW2016027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8f5d3068dcbf31278be3aa4e2962191e1c6b694b568ece7178ed7793dfa43f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:29:00Z), 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/QZFZ22006482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae145a023538cb59c0cc3651ca7463a4f0c41206a78e1f08661601b0f6b98e1c. 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/QZFZ62088220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898e9a5edfb990836ba2791e15d6d5673235468e551f7808540b57d1eed00ed0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDA82001164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f872ef004435cdca47da8ea4a4a270660313bae5c33c7a0b6196cc4f7714ba. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZES72096417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0ff8559b5be8b1a634cb9e4dfdd510538ca472b4569b9b6c460a03cf1d863e. 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/QZHNB2074511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a686176f8f91f5330de4f8d78ba589f244d0538c7575f704a0196ac9166f6f. 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/QZK6M2042408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8445e22fb1800b1d29916ccc6ed53d73ce7ae12bea222634d65609ebd95e08. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNWZ2035815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ec647897edb7335bf4ce805ecaa8c908f412855482e3a3a75ce42b1cedc1df. 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/QZDA82150980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff7b1be9e68906fac0620466d92aedc8d99fb3ed6e4c39aa9d1d9461bf4f5d7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFZ32207435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29409a45f7029b97c921d969432ef463a7e178627ec4d975ffbefed8fb3d35d. 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/QZES62204101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb559c2948fda64503bf2821dbca74c652e0f8f491290b6fad7401eb845fadd. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZK6J2474716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf09ac64535e894b206852731fbf30363849555ce832fadb8fb9b60af334eac6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHNA2447167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fa78c7c212a9d2c3b5ac607d3b0926668670b64637e86c202342b053c20812. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWFK2457954.