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 0x11f50a8df22f1da02a31f9782c415ee53b8d4419b806054729e7503243b5be0e. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c64ed03e-9cfb-4f2e-b41f-59e15ff75ea4.json and https://artists.proofprofile.net/proofs/artist/c64ed03e-9cfb-4f2e-b41f-59e15ff75ea4.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 0xf43537006b07e08674ca3d815877bf20ee6efd15076d958ef2aa04eaec60122f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:56:30Z), 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/SE5DA2000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f61bda76b655e73739b5c29c04a58f5c87e183424a6e73fb446fd104f955ed5. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/SE5DA2000275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f70e1f1fcc76927b45d851af7d9eec09e139bcda695d4e989d5b50adbd06723. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE5DA2000328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220cbeb4455b1ed943e92a86437a5d1de358752b1116d24a6f667700df964be6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:30:32Z), 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/DEKB72434287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761de1eaa9fec6e7ff0fb2f222187bd03af7094d3b2476874e030d4708ab1bde. 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/DEKB72434292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff24a2c828f2b68e48fbbc2ddcd03e2e9eb40864015143a12a3890eca12cafdf. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEKB72434295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae347cd2a04b47fe665aecb292955cc218078e288aff6f04fb2b2afdaa0d65aa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:48Z), 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/DEKB72434296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5810ed1fd05ee11d0fdaad50f90dee2c56b5fefc0445f3e75bfc682fc86d7a39. 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/DEKB72434300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05d7762d95893886284ee593db3c1fa760bc1121d24fea249481cee3d1f43c5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:22:31Z), 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/DEKB72434439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03393b16def1d17af084932df3a4a86c2edd873e69a07fb19abde8984af81939. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEKB72434447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2014d5958fa0a515d2217a02f5b3b2d98880cc13523b64607d675f58a6f090. 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/DEKB72434616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4222c1e56b96f95256a3378e30dcf1c9b93ea9845408f16fed8ba1ffcec9bea2. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEKB72434606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6258420bd0ff3636d2e5df5f66f9b42d14d9bd57dd225c3d74daa2be11c7a6. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:26:20Z), 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/DEKB72434453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965978032a26d25430e65a1ffe7072eb2a7755dfa15e31a4e9549c3da31b0979. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEKB72434590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe33e3dfd5b3f29bf8483d002077e0d315a833c5cbcad871674509c94a243ba. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEKB72434598.