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 0xe016dd96c5384f1fc64343f9efb5b08e0f111804cacf70ad307a400959358ba4. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d153de3c-bbb2-450b-94e9-d0d1e9f8d619.json and https://artists.proofprofile.net/proofs/artist/d153de3c-bbb2-450b-94e9-d0d1e9f8d619.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 0x9ee80dba3e9242f41744686b9d0d06d68860ba0e6df3956a94f55e67aa3e8fa7. 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/BX1K42000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58aa3e0c9e45830b75c29fd73fe8a11d59ca5ccc12aca6ae3763d0282df6fe36. 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/BX1K42400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07a87caeab88bef1e317ef88b580ca94d457f98d75e28ea3937456620926b9c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BX1K42400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6261bc8a14349a00154ae132d12ba01a82fb5a40043b109b9aae44a83cd9b9f5. 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/BX1K42400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8ebf3cf2e71781ea03eb31db98308d19517b4ea2977705e3f6372fa9f31ae9. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BRUM72401056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6261bc8a14349a00154ae132d12ba01a82fb5a40043b109b9aae44a83cd9b9f5. 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/BX1K42400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacea413240fb47c9eb7b88ae304cf90fa8b1060ef885b94e6ceb6da32b6c7c81. 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/QZW9L2380310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643ebe29135b6d30eeab4bbd459dfa41e12bc62cc30bf41755e5326cd8117e5a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWV32382478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ceffa2c71eb0d259b0e9fd7cfd9c92c78595cef43f23b03358a38cc150368cb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLZJ2337150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24025eae67e3fc05396c1213c83a40fa0f0d6a8472d5bff47f06c3b0591031f6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BKGNR2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad89bbf88911a8477c671480f409589d7c3598d6f13d17fe862a35dfc7103e8. 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/BKGNR2200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaabb6ce812eb130380ff119e8cefb5ca9aa582c84215185131ac88985874ff0. 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/BKGNR2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fdabe13ccd77c7435fb524af780a48313b64d2e903e04c996b535b47300de2. 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/BCPS22200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35cbf15cc8376336692f2b8e9ab538a157ba5df6a6cc25d52a477f61ff16c36. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCPS22200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b506d0582c476497ed438e1c551b572f12b0d93172a3667846100477c20429f. 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/GBRKQ2195252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afc4da6c88df97941752805a83ac64a908205cc08147134fe506360835795dc. 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/QZNJV2195259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335c146accf50dc3c97daf55a6f6edc50a4949641f5864a2ecf5cc4c938e8857. 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/QZHZ62142111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea7c2afebc05a11b97a4f508345a22af878db6558c8d3c5471646b2479e2d21. 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/BX1K42100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3591acbdaf66675119f49944c7f80f8a605bf5d7be74b6f95acc951b9475b17b. 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/QZGLS2119391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d27c5cef7f08b267d57b29b32f170e6b04c98f73e89f55039e7ab906296cbb7. 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/GBLV62031020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62c87808990870e8ca5afe6d967f88bd0635b5d9f3ad7ad639b0486c4d8e16b. 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/BXIED2000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa139ac10de6eb35ce1a1a0d285464dc9c2c1dc138b34aef115b72ee7156d1f57. 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/GBKQU2418221.