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 0xbe391a82176a2ce8fcb26a2410692b132e9e69ecf7c745a605c5c4ddfc34f572. 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/2a9065ee-6bf6-448c-b435-425968867fc5.json and https://artists.proofprofile.net/proofs/artist/2a9065ee-6bf6-448c-b435-425968867fc5.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 0x1bcd7b9711bf9a2935dc3ea96596f5892208a624719f9ee85f97e16170814ab4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR59R2468021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a27b3cdeb2352c2fc93c7d167a86affc1a0516e782eae798911fe575fec68dc. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR59R2468025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6040d1c5a6e9616102e0aa2530c8c53ebf9d02ead0ddc0fa1442e72417541260. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR59R2468028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc155bfef1175c9e6612e68eac69177be74fa49708fea7bfb9e376b8c25fa60db. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/FR59R2468034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bea8a150533b796b91542aa3fea52dc339b22447b724f819be3174e5f26724. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR59R2468037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb298d9e868c986855f5ba6bb2879eaf0e1d80f3ea99d63cd6063eaa3eb1b0740. 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/FR59R2468038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12eec4694f4f133b8e26bb0da910c9cc79ec5fbc913dc973a86cdb6b8e22668. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR59R2468039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0ebc97542176af27ecc02708ef2a1ae8a258fe3bd34bc9f1098bc6b6185ebe. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA072182504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9718ebcfa51cee82744a7c5eb17eae81ec054bc7dd0d3882f9ed091ab99cbf1c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/AUBEC2130967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc9c9fa377c6553317239fcc3094073b5ff3b58f50a6a5f51b398bfc67bed7b. 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/AUBEC2130960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049622dbd27f539ffcc5f5436104e05c66d6e785afe48363e0cc298c35aff73e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:17:10Z), 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/FR2X42287316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92d5333e5cf42e3d49173118c1deb3db8f3495418c5ed2a1e695c81b73c4883. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/EGA252204472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2f3b02ed49b7b6c1df523033b90eeb2211ed2ef33fd270110aa00dfae4b822. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX282222715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb182e96489f3b212c7d99f54296fd443c47b8b3129869e56d6c487c0dd3ceeba. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/EGA252209566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c8e97bbe0dd2240b6eee2134683b93a6e0ebbc7919c4869b7a324400925c9b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:45:43Z), 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/EGA252211779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2895ce9ce74d334fe60108e087c2c0f70236ed48ba68e9a2799358296d4472. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/EGA252305569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd78f712500cd4ce9feeb1f4115dcf663f17ba2abd259c6cfb1b2f6c1d17dc8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:01Z), 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/EGA252310911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc9072dbf478c564a1873b89f3db7d18a9b7b9778687921bc3b4edf98de83d4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:52:17Z), 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/QZMEN2413342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e86e3291d721e0765d105b46f85ff5131903fbe1af187f3e74d463922f5e94. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TR0652300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd59b68e85ff1d5fca22ded507221fbccebe59ec2867665e7e8a61690a78a5b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DGA072417455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8ab725e25deba45293e48543eef85d1fded5f370cbad1d73419ada57b483ea. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA072439025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebb5db88747065a803c08f5b6f15c34d312750c5dd6eca7dff46859ee487b58. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DGA072433886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81fd9dffcbc85f92d04dc7c26e8f6367fc94f4d045b8de6d35fde4f0db31a37. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA072434071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10258e6cf95ed288e2d2851a265acef6d328f05dec37d0f62213b1c43a49cfad. 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/DGA062449955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b10ba8cd6316016e0710f11d29f3720d331117c141cad9ebbcdf4df515a736b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DGA062449337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a9e3225c66cebe0c78a5dfabdc1d6357959d454e724fe7c9c96cb5e04374b2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DGA072438967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2eda527e0b3a98d2f5ea1f6b182d483d86e12ca7431e7598e81474619843f3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA072438991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f853486dfc75e6e163c4a36afa1dd8616591a1670939207caa39d1f78c7b856. 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/DGA072438999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecea00f6a46ded364bec6de8b3a67ac9b74a44c9d91b78dfe19eab06d1cf8a6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:43:15Z), 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/DGA072438990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba54a5c596cc695a7b060068471f4b562f8830c919d0c38b0b2eb8d4d8d10f19. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DGA072438983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e301da8a5a45859eb288c565738081351ac69700a82119b6f06a15fe0966fa. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:06:02Z), 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/DGA072422767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732c5b1d24f6ea0e08e4a22f18a939c6dce2a58b1aed744194ab7f6a99de9174. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DGA0S2457298.