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 0x7ee423c7f21960a7fa22b50d4763a0d1bc57926e327bd79824034d969739892f. 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/bc2cc589-fd62-440f-98de-32beffd21d0d.json and https://artists.proofprofile.net/proofs/artist/bc2cc589-fd62-440f-98de-32beffd21d0d.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 0x31e6793aca732b23751daff5b3f496e8957ca4bc2b796e3742e1cb378129f640. 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/FRPES2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe6d002a83cf73eb8cadae38679b22d3c1c6bce44091fb80dffe607ad1de074. 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/FRPES1900510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452f2d0cc546a4d966c2bde9faafb93365f78673aff454e6c55991928e1eb64a. 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/FRPES1900200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32af8681c04b6748ae8cba3213013d20a44214903df08fc61526f9f62301adf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRPES1900180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30469a0d2923aad68603a665a3ef2bd56c011eb4c551b77017b3f73bd8e9165c. 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/FRPES1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922e34cc5e2b19632a8a1158cbb1a8435a092bbc2033da04db80410989453563. 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/FRX201605604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b79388e990efb8c4cd3d7685e30795663b7d1f36aa4f10952cb09e98b518058. 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/FRX201605603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922e34cc5e2b19632a8a1158cbb1a8435a092bbc2033da04db80410989453563. 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/FRX201605604.
Creature of the Night - Roman Kouder Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67f90086c7e0d7578e80731ecd097cc93c1ff8c9f3b27d9997e398bce7f153a. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/FRX201605605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22370e4a998f7b369185796a1b193acd83f0378a0ed7ee0b7d2acc472b8a57d6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBEH31404529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd44ff6fb3ba3b9477d7fd1885a2b613c249d2d5b02276975df75300cb3fb0fe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBEH41304530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90a437be18bd92b5403d0df8d67844b1bf880426bd4cf7eee474bb128231b9e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2046175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5009aadae37dca836625c04c1d1933b46f77ff0103d5a8ab960ae7220b68cd24. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBKQU2046179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3abf06593b2fe9e2fba5ce54b6d160d53b061800d1070ceef99613322c1cbd. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBKQU2046180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a11fa06d0e5772699ff08d275e66cd266cde3c6a97b1ac8a2475b6fa84a4cf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GB7EJ1400628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d72558260ae957f59994a106c2321da11d163aa87f6ca620ecad4c0f8a2dfa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB7EJ1400629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1256084a9b52725915f862f274c3906f4ccbe504a46c635419b52e5244807a42. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GB7EJ1400635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc797085baad73c1385e3bf64318fc7a1027feccf154a937493f11e751642e88. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GB7EJ1400636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fa201ee4910bbc91db341f726702bc69427bd1dbb8f626a6ed671348ad3208. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GB7EJ1400644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2430ceafa10674d1bdec20608c0b673518b4df3bd09e32df3398a781466dd92f. 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/GB7EJ1400647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a700a4d119b3ecf3d84e4f13c1cd64b23b36565a19ad16bc614d3b92cb13b45. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/GBEH41304562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf61419e6f0a31f94d563e53d09a187cca90fb91bd9795efc9d56663f8307ccb. 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/GBEH41304565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8173375df418fade743dd26eb57f5521418628a5f35e8a7b5d8e18d3d5337e28. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBEH41304578.