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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f3e5d5f6a2a3fe7fda30e28a1a0cc6eb22df6523da17e5ffb6b3ea893c7e5c. 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/c9e1c0ac-131a-4ed4-a5e2-40145d998311.json and https://artists.proofprofile.net/proofs/artist/c9e1c0ac-131a-4ed4-a5e2-40145d998311.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5436594a7eddd302e823f9ff6860c08e3adcd25b0729aeb05095e137375c48. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBMEF2302440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762267d519e67105751f4ebeb04581cd878a8ed4c94e8e34fb8c9a94cedee894. 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/GBSMU5690983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87f6df0449993d574ca3eba288613c519be06e5453145434cff316230c08ed6. 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/GBSMU5690985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0028c5e4d5209e324b39240daa8773959fd16fe2a2d2f91e9c60cb899f2569ea. 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/GBSMU5690988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d57bd20a724b89fd2b3cc2139202505dc333d2012d9f0c13cc245fec6bd4d39. 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/CA5092500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59bc7ed0f2e19938edc065e83e615b33643f24908b253f470e7c6dae01ebc9e. 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/CA5092500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee5be4aa3625021e55f25e377632eed183016ce2e4a0195bed431fc96858c97. 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/CA5092500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816657c38c87f9745a957171cc8364e25f1e3095f204ca60a8f57e75c52e17bb. 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/CA5092500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11327d3fce4e5fd71ea7b8d736694969b3be126a2fbee106b03929a314b0a745. 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/CA5092500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fde7974708925b59e8432008e78d1def33c65beeea06af47dd58b025092386. 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/CA5092500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c5c60fafb80b353946e4b0a435838f97335923c4bf1924e7c3d2278506745f. 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/CA5092500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9631d7bcce1495e5649470cc877f9a91ef5c8b1d182c625583428de6f8e95c. 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/CA5092500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69f463a32368edb189992874c5b17e07f55c6a21fe4d5bbec12ca0279edf39d. 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/CA5092500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69f463a32368edb189992874c5b17e07f55c6a21fe4d5bbec12ca0279edf39d. 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/CA5092500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11327d3fce4e5fd71ea7b8d736694969b3be126a2fbee106b03929a314b0a745. 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/CA5092500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59bc7ed0f2e19938edc065e83e615b33643f24908b253f470e7c6dae01ebc9e. 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/CA5092500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb85090e3e7106d4d87c3826cd88c362d5905944b233fce2e85e3aa417457bb. 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/QM4TW2539784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dba154f9c4651355d86fe36c622cddaf65f552ce07d1fc24096ac2758ca82ba. 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/CA5092400405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2debbe9368a42e882daf09ea63b96829a3b08c604e7bb8211af1f1dbe30ba3. 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/FR2W62400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4774bc38f49527b212d7f5e97a2951b079b7c69f2e1a3c7e6999b9358c03598c. 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/PT9MA2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84328e46d823659924ab8dbe08b169893ffe08a70bd4b22ae78eae267dd7fe44. 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/GBTVQ2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ef74b5134c4a5d611f0bf1a1a9fbd9236fd6e33b3adff6e5150e5ced3d5840. 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/CA5092200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413c3d8368751247aea9b040e855ce554f0f5a3ad0fce4f3a20ade4739d146f5. 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/QMFMF2106848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3179644fb9af5e01dae3e27aeeeb4a93450eb45462b22a83bfbeff8a614847. 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/QMFMF2106850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c140cc5f09d514d3c5e4ead879f187a93d662516b3ee95d0a648b7c08d0e05. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMF2106851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ca71921536d0b0f0720b4f448b7aaec8f7b8024883a5b189f9d6e9d165efad. 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/FR59R2158937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc078ce23d5540a96bc385e81bd5383ea70bfdc8e5c3e1b7ea49c220ccad7ca55. 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/CA5092404001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638be363ec802ab2dffe24e945f8e6d606bc92221011ce129c9c68673af72f95. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5092403401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e99c213d8d35bd425ee3415ca2a3e8b89df7c145f5a36e7f4c72ae15af87577. 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/CA5092403001.
Pain & Pleasure (feat. VANYFOX & Fédération Internationale du Bruit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d8f88b6ed94f85c8dd212d0435d4be9e358b632bec35914757ab3d4abbbbc2. 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/CA5092300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5436594a7eddd302e823f9ff6860c08e3adcd25b0729aeb05095e137375c48. 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/GBMEF2302440.
Noir Fever Présente Moonshine & La Fédération Internationale du Bruit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d8f88b6ed94f85c8dd212d0435d4be9e358b632bec35914757ab3d4abbbbc2. 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/CA5092300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f05b499cce68dd5d558f085ecaf0fc7d09022b9bef0aa6f15d07e7126bdddc. 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/CAK472205912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab377ff7e251e155306a1484ca9d58ed143aacad3904ef3782a2e13a4b613ab. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/CAK472205913.