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 0x1bbfaad6a2dbc0567f538959cecd52213bc1ccfc00710c5c91497d2b1e266ed4. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c492dd1-4794-46ac-82a8-2978ac845950.json and https://artists.proofprofile.net/proofs/artist/8c492dd1-4794-46ac-82a8-2978ac845950.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 0x6ef0e5b3d6eb7a3cd768eb327479296d5a124707e01ca323757014a699ffff8c. 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/CH5170700116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78e9ebabc63694158cdc993cd9c80d969e3f74ea6e2dd65a2fd57b570889e57. 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/CH5170700118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a5be0065e9e5f177eab1e50fb1462c1476293494ea771b495b2e7f23f6a7dd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH7811605249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9d0311dc3db4205962c35c8fb58c5455655204a854a535fcdbd7aa93aa5ca9. 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/CH7811605250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6871c9278e9f4b40cfceb18b48d9af960dd132ea23492fe90dbdba0ea11dd9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7811605252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7724172b8368aa8334793dba74ea8d244e356283b3daee7de343b0774c413ca6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH7811605257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc2754d45248764bb593894e84e1d1caef834b35261bcde3c4b57481b25e400. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7811605258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cd5b6581889473307410121889cdc9668ef3d336efa105493b1aa0aeb05a59. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH7811605268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb791ec2249e461e3896280117c541d792b71af44a598abd1421e41e9a8e77d53. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CH7811605247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b501974a7304ae9f7302e3edf92aeef1564cccd1ea6c1edbd2121c7358da25. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/CH7811605248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07eadd6f281e9c1bb0e89846e56f4ec90e8a5adcd6e43d8f9fb456fe4d216da9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CH7811605251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf772bf79a86aceb3bbca2f248e04bc3620051c78e3f889397a794584e6290633. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH4102101402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347438ea55dc8384549c6f1b00097d01cd1e709e8ef0033a7891a04d1adb21ae. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH4102101405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4843cc8513a836e05c76c08aca52d0aa9ae09f4a1f198c665f0314dca700897. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH4102101410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65387f575abad9756763c02862170276fb2f0467167a475d9c3ab773bc5bb6af. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CH4102101401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81816163da0997ee46f07ac1d0daedbe735fbd9304e51dc3b65b2f6e18d6489d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/CH4102101403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad853ee15fa66941074674a03692a1a3a6f2a88ec4df0913936b274b5ffdbc1d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CH4102101404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0de63f22376284f9a6736c7055432a612c496667b22b01379edf0277cc5063. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/CH4102101409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd7d4693e02a258fa64f6e3edc28d891a5116d3c2eb0f86e8cc11fd41d024f7. 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/CH4102101413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb1cd06b623fb6ff1dee667b526f81ddff3f56efdba8a8ff57f086e3ef41991. 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/CH4101707406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d67c294e73e6870caa20119b52977651311dc0273c9553a3387d950e264e1a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:12:25Z), 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/CH4101707405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedae559b63a8564299aceb59d90e73de0e60302afcba32cc8dfc9ceb0de487d3. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CH4101707403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e1ac149c67628cca7547a570dc0b05d13b67f56332d74c7622c500c456ec92. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH7811711521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d7f86549f081d32f69d457fbbb6d96a38bde1083866813514692e53fb691ac. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/CH7811711516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4ef90f4a2a3a2a9c1476b14f752468dec52498438c7d8e34c7ac1b4b726158. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/CH7811711522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5731ca7dd2161d8132e2725cb6fa40c5cb239dd46d3160d129fffd54c2ca1a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH4101810201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790ba6f54c5dd79199e17498a09f4f1a9247e7468f8efa4ffa8f3fb14840f8cb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR59R1912483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf519102bd1e96900606a1d3933c196f71d77daf75a842b293cb627a3b3b008. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX202045855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97438982ae13deb8bcd85d344a1b1ddc1578cc5631561897e585fa79b246982f. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/FR26V2071534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0a5c8c20fd59a68c4328bce467e39071c0d653e5bbb05a6d2bb7fd3cd35002. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX452476641.