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 0x68bb1760a737309aa3d3fee21b638042563548da6cabdb8b92e63349397c1557. 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/20b73b24-396a-480b-84eb-39d31f76c608.json and https://artists.proofprofile.net/proofs/artist/20b73b24-396a-480b-84eb-39d31f76c608.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 0xf8a77e76db89223f1c0da55a9991380629c260ba1d86ae3e737f85a7178c54eb. 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/DELJ81768537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7ccc2a4afade30a38ad3348116301a48f7d1f062ff8eafb5fb48d037f2d9f9. 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/DELJ81768538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9407d94a68278f75dcfed4b0e07c0792fe30da33810043302a576771438a8d0b. 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/DELJ81768539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542fdfec33cbfb93577285c4e160df8d0ae82e3c0654ade231c639f2fd19cf3d. 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/DELJ81768540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adde6bb832b24defcad6aeb8806cf77d1561d7c0eb02265760c2e7ef9b449e8. 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/DELJ81768541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0a7b0cb141e17606b7c38f353409250d4037e33b9035779148613a7d46cd8e. 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/DELJ81768542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a9a4af0302b2d696ce435d926f0b5bf51f8823b7409002721787bc5ea5de58. 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/DELJ81768543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb09328046f5083fc96fbc8f023ea75fd6c41107cc900f6220bd809cad649bc4. 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/DELJ81768544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f5837a4290e16db8b39ba8665b6c345722935c860815a81bff45b0a22171ed. 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/FR59R2001106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44f848d5a194cd10ebe6daf9886b10f5447bc34e7cd3b217e868f1711bb96d0. 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/DEWH72000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2ff4fe888d52cbc1f23341d841dcd2ef466a6fd45324fd097850246cdcc772. 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/FR2X41712805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb602516ac39a1cf22c928be2824f206352094cae0671e51dbcfa129e16473b7e. 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/TCADG1731943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a03398f44fe7d02e7107f24b1f2b91cd744d88580791499bbb4be2516138780. 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/TCACS1696386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f6d50fc231237ce2c4153e3394cb8235b83b2151bb0b5d5aa6845726ae3921. 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/QM4TX2479925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd464f83600725854c3fa26059af0a71288c156a34b1727b6bb05f807cd4c6556. 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/DEWH72000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4851a8b72839f784e6e9edd504c8c6f80f99ee1545c456a534c38c0782c07e. 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/DEWH71900505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79476990a9dfdcecfe26be32a76dfbfb6c334ee4fc9f3690c7cec78acb5d75ea. 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/DELJ81939332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfbcbeafb188bcce38c490ff457da11aaadfc932b1b5172ca6d398839eccc10. 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/DELJ81804270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d38b770f5a3459fdbe13df9986d5df89e46b6d5328c7b1e678df62d26ee735. 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/DELJ81804273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05961937c05ea18c41ba8d925f2c5e41156fd133024099621e17810107f7f777. 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/DEQ121750188.