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 0xab463e078b7a3ba645ae2551a83b1cf9a534e5d1f7be13aa3da63978a4c9386f. 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/0c384399-a188-43c7-a98f-dd5a5c049d56.json and https://artists.proofprofile.net/proofs/artist/0c384399-a188-43c7-a98f-dd5a5c049d56.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 0xaa669aeb37fb494426cd451f1318fd0b05f6e1abd9b6cdce6001917d5e848456. 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/DEZC62325645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc8a6e8d2a50982e880036b95c8afe5a9a9938044112c376d2fd4a17e2077c2. 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/DEZC62331450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40666b668421174d1ffc6002e384f734b13db0a1775c954a6bc57e7f8bbf5cc. 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/DEZC62331451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa669aeb37fb494426cd451f1318fd0b05f6e1abd9b6cdce6001917d5e848456. 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/DEZC62325645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d02a6c86684bed2499611792e6bd246b67fb9d4d06ff7df994ee08131c0360. 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/DEZC62331452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f49b2a0684a8e67cd16cbc2c64baf6435f3556e89f18864a9dc74a318ff0ef. 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/DEZC62331453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd245cc80fbceabf4d428d55be52ae3add8ade512272e0494ce25cb5ed1b13a42. 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/DEZC62331454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cd239422240cb15efc4423f02417ba7808569047f9af3f1ed22beb038bf4a2. 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/DEZC62328684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8b60b49fd616242b77ac3b6ca8608c617528c86583eb244f0e989ebab4a822. 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/DEZC62331455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b84d7b0ec7bd1d6714158290751cd2412571f7247742bdc254e281e78020015. 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/DEZC62331456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4bfbb101bb5ffa219e59df2cc7d66b88a6b07502057c080f75526984d9978f. 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/DEZC62331457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f30a885717da04671525bd5914568a6bdc9434890d8b523e4178963a7488e63. 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/DEZC62331458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90dbf3dceb17c39613e0f3fee327564fb7cc877ae437d98f1ae168abd0ee34c. 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/FRX201916739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a8930a00d897f77eeae7e4af9636a03a416c17692521ae0485115ee1c29c74. 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/FRX201998047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4bf5bea0688a6247cd98e680f78d01cea4851a2cc4fd6851c7ef1fde3d9b87. 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/FRX281942375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b14fd92acfd02919c1a6bdd64377f5fd4b960ee5bbdc6255c844c1709e6566. 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/FR2X42007413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620487eb40a902fa618ff63dc25fcb085e21db98e7309d99a2d408a81ae74bcd. 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/FRX202004764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea93202dcb9b70a84fa4b2114f3c098e328cdeb4be442a4e4557b78e98ea629. 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/DGA0H2413752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78177100b19d4319fce286585dfd4cf0bd52cac2e6e6e4733a8eb3fc412214d4. 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/FRX202128135.