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 0xa4e32d80172a617248a93663385b6e794247b1e514c180b830a803d61d00414b. 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/46490ff7-59cd-4fd3-9084-864a7ac4c3fe.json and https://artists.proofprofile.net/proofs/artist/46490ff7-59cd-4fd3-9084-864a7ac4c3fe.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 0x84611c58348a0bf3630996787fb0185367cd99c39be1ea3e95c11460c5be1012. 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/INB942401626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99540515ccbdfba50a8cb2ebde31b139eca4d83e153db9ecce20f7a8bf016dd. 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/FRX452473860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b060bd72666da8f1e046e4b9190ab6dce6e765257d2a12b232632fc7caef85. 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/FR96X2427870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef6fdfbef75e7fe581c130d8b83c11af70591a5164715a7551b1374f1c38753. 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/FRX872347122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308da554779ba2ba0ad0503bb28a98493d745cb07e8a461f9568445aee32433a. 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/FRX762332802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc5906995915be45814f0de5af887d6e614769db522fb3478f2ea8b45e827ae. 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/FR10S2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693256019f224e72cb55912cfc1bf8bbcca87a33dc90cb72a6fe24085822b226. 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/FRX452146040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c62b75c735d9bceb84d11e72a29014ef723b838797bed87b6b5cf1d54aac6f. 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/ZA41S2100428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd23b4070d4a32dbdda3d94f2a7255f67c33051d69a73bdf1e32fe984d06b7ac. 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/FR2X42194902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7590e18d8da14afad2907811012fcd7402dce6a4102f902e415f0b422029da93. 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/FR96X2071037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca0fcbcabd7724cc6ddb3a1907dc7883b261d559c71620c4211508223dcdc09. 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/FR2X42040100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc11aba7298b64b792df464b868df2ba1aee21dfd6ce4dc534fea4e59dd4c86. 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/FR10S2047490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5a53858ee94f4b472edb8082f5c7a342eac3c8089a0485b008da4ac00fba2b. 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/INS181905067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddce350cd97dd11178ac9ae04243e21bcd0ea6eb00657418685286e35aae8986. 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/FR59R1959742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa3508e526a30f7401563b325aa1dde491716ea4b977d2daa520aeaf1a8ddb2. 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/FR10S1992757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3c2f13f5dad49c49009ee3065271db78f15087721523520e463fed189bfa6a. 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/FR10S1992813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88f676c1040ab3ace0c4a7b4336fcb1cbb583cb07e718c1022084037864ee1b. 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/FR10S1990333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1db5107c860e2d880e43e00c6e8f87b7d2bf6607c59ca9533b9621de2cc0d4c. 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/DGA062292780.