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 0x618149ad55e883eab03c967cbbdd78f6513091a466d983f69411ab193703407d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/005ae2e1-7fdc-460f-b409-a12754c9eb48.json and https://artists.proofprofile.net/proofs/artist/005ae2e1-7fdc-460f-b409-a12754c9eb48.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 0xec9fe31d7116b1c4f892e3e576224c35cfac8409134c7def9f049118559a2874. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITUA12200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b07064489de842d4029a018653c3d5dea75f5d700168596f439c45fd39ac9fc. 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/ITUA12200302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6030ee994745ee2a102ac84c8f104e53fbc44564491384b5760e3b07389770. 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/ITUA12200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5d79194ceb19b53e6395e99ce2106a311d7b7141abc666cef881c571e68020. 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/ITUA12200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce20936700f36c7816ec6652c42db843f15ea9b9d1e0bf5cfeba0ae84375552e. 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/IT7Z22000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb411195ad1307a29fde46dd0936aecfbf2f88c55c49f5cc154af0286d88627c. 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/IT7Z22000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9adc99170e6db018996829a468e91673165acf979606df8896ea4cd2ac9695. 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/IT7Z22000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345be45b8fbf45c5e1a7808f5070fbe7992f3d6d80e1e549fdb720e460a8ae19. 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/IT7Z22000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfb1ec28896b220443a00e6ca071e747b528f33f4dd2ba508743344a230577b. 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/IT7Z22000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1555a2e75f794d8c8b83b0b7654fad340ec31234d8afbd8de866296d4d7eadd5. 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/IT7Z22000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705bbb378ffbe774aa6896eccff5ead82c5d0b945043260797e1e1141f304594. 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/IT7Z22000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cec55f864d1282df422b28fac1fa7e8a425ce35aec98779c32a92c91e4c361. 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/IT7Z22000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f4ed105a3f91743c0739448ef0453dbe4354a112563588966b3eba42d7e768. 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/IT7Z22000009.