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 0xfbe16946c70ab62de23c268fc187111e90ff336d5e60624cc87758bd2384497f. 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/d07f267a-7d85-4901-a9bc-24c016ddc254.json and https://artists.proofprofile.net/proofs/artist/d07f267a-7d85-4901-a9bc-24c016ddc254.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 0x2b47525117a37671b7d8088f9c8d01ff66dc25f07ba8fafb472e5404e11c8d34. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QMDA72269422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d16e883c6390e92c1f354a84165791c67001c0b66cd76a8c87edac085e8d5e4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMDA72269424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5479017cc64cda1cdb3a22a4e2dc10388badedbe6da14c5ad4ca455a6ae31ac. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/VNA0M1846920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccfdef396a4993c131a9c733ba6077c06b7a7e6475a9686d74270e1e1cc9ba5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/VNA0M1846927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5d24a722db23897ba51fb6d9c2d0cd0fc9a2be5268b24f6d9ecd6489655a90. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMDA72269409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522910d1ef88fbe887e73d0f716a69b10b883f852991ef8c6a954cb84d14c981. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/VNA0M1822351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741460e4003d73fa32a4ca1a7aa937ee28eecb200cff6461ba98a2296ba7e0f0. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:49:47Z), 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/VNA0M1846863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b025cd037125a2d6a34423910a145b549a290b608544b87a0234133a788de5b. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:11:46Z), 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/VNA0M1846869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1a8b97e7f0c0f8ea124d18348733a58062e9c54ccb906d97f9d029e99d585f. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/VNA0M1846906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522910d1ef88fbe887e73d0f716a69b10b883f852991ef8c6a954cb84d14c981. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/VNA0M1822351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697b9ccf4ade85fad1d1eeb01924195c20ca76633bbbdff88e23bdb73c8c8828. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:06:52Z), 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/VNA0M1822350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5191c5a9bbd839934e41a333acbf143e9e7e3702c790fa573a98d7a792577546. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/VNR011055813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c0874f4f3a3d51facdd26692c211db72f7f819eafb03ba51a1e704b1d0047b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/VNR011128770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2025ed66409aa09a61c4e2aa883af8a662c96636776ab1567235fd824ed6eb2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:26Z), 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/VNR011132289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb177937d843563ab5af338fb35865765429f65e9cf1773a8c5da9b5c90efca32. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/VNR011132308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca52385651834b97d32dd7043e98792a58521a5b15c2bbc7ef4b493214c598a3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:03Z), 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/VNR011132540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf012746dc790a31e587e3681da94a56952fb9d59a9316a200b5515b55bb35252. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/VNR011134005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7283421bdd1e8f12e12a353b0454051d6a3fe9a05d05e8461aab8d3b9e571846. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DGA0Q2424517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fb099597e2e19ca9953de55c7db3b8c1f95f70de2e78df25ca005949cc1989. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:57:17Z), 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/VNA1M2404228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99be5693ce910e0c62c08a3bff44bfcb66b0a6ce21841670d77b8a3296eda7d2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:21:26Z), 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/FRX452552423.