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 0xf7e833fd302a6978b22470bc6560c92feea3e8b42e863d51b8f3ff9dec0ec698. 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/41414fca-a6ea-41b3-a13a-d4e4b4864be9.json and https://artists.proofprofile.net/proofs/artist/41414fca-a6ea-41b3-a13a-d4e4b4864be9.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 0x102b77ba4f7b6b5071217593f4c79710bb10d7e22d0ebdd55bcb323dc42539b8. 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/QMDA62101459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96da4d11b646afc49251fd79e97cf523348437cdb0570e3499cf6bc4970eccf. 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/GBMA22196618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad134d0fbb2aced6dee5803a7e542aa0633875f6fd414b49a56cfafd81d4745. 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/ES6062417801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b0b5aa81d1485a3e1d097c0064d0e87ff5e61b72fde5c539d68d87dff09fab. 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/BK4DA2405669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650c59f3dd5b27cbffdcfba5198ae2913397e015b0ad5ff175dde3079a626660. 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/BK4DA2402450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f232a8d503026d324c0bda26af65db17310fe6d820d348ea593c46a19b24166. 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/BK4DA2321672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737e774f14a9d918742353d95b1c0b493391c6ff2636d0e8ea90313c468ca9a4. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BK4DA2312879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b5d7870e3c4907916435d42e142ecb4ce121aba8acc19357880e8483619039. 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/BK4DA2317727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d933d633a7da913baba1cc51e656f9263a4bac368cb411d9ae86ab91ade62c. 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/BK4DA2314439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7220b8db6f05c9ba3cee0be7c9eb20e853a4c0dfa1c70342ac7c0a1b2eae1b74. 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/BK4DA2317728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0eb94989a1e7d3c83dcbe3e5621a5439499f56928ab3823f5943feb6c111fc. 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/BK4DA2317729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957ce15e0c324d960b6624534ebc2bba6f29375dc59d89c66b499dc30ccc9eeb. 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/MXUM62300483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d933d633a7da913baba1cc51e656f9263a4bac368cb411d9ae86ab91ade62c. 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/BK4DA2314439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737e774f14a9d918742353d95b1c0b493391c6ff2636d0e8ea90313c468ca9a4. 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/BK4DA2312879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1452da9e4e6d71f949b24de4840f14d1f90eb3d724964cb668207765330658. 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/QZNJX2376075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb38feecfa1610a8d293b7566cca6eacbf798d5225bc68c803d3ac5ad03a3377. 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/UKXN22296384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa5aafe27f625b4f7e265b185c1d76003706d9c2bd557245af32a65ff2ebfb3. 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/USA2P2246805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5535f702ec24cb0812ba394b1f286b24959f7978ffec1eaab5ffcee127d3d6c. 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/UKXN22220003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732446282f7aaf68e74fce7bf17adbf4d05f7b783c60ac88e3c5464841e0009c. 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/GBLFP2288263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cf9412e27d487f7404c74d6dd00de509eb781a587ff2b13780f6f7cb79f944. 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/GBLFP2230407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244db5e7964a2d713bb3efd3365cdf2c7e88003572f69fa332e9025ef40c36c2. 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/GX53U2080449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9451512f221f66d196c926932e8a54c39b848f306fbe07354b04d49f09580235. 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/GX3Q92101185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc31d1c6032ce21a20f8c806c98dc257156a0fabd08d375bb5c27260b6f49926. 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/GBLFP2102770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255f770c09ec6fd1dde97c6699b4d676da2df265731dc125879ddae52ee3ffbf. 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/UKXN21973565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1100f30c50b206d6ef1aff09ce01f48edf6eb902730528c65cfa883172542d0. 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/UKXN21928073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cfa38163105fb68362407612e0d75f2fdfdbc1c7df8188144a51c05b923873. 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/US66W2000361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d147691c58bfe27fccfd081e10f20904b5622b25c4c839fdc7143b2a42442c4. 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/QZHZ42053467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374450a1bd1092d9264f8c991377d0c587e28a76f613f57283088c202fb012b7. 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/QZHZ32031326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bfeb2aa67cef3b5590c278cc4e093fa56c25aa850a3e6f092f966704fbb96a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7VG2046471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07aff5109e6cc3f5a39d6008ac6b15a0f5610b4d7c453b431d9c03ff2ef320f3. 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/QZHZ41988630.