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 0xfe13fe34d5a8901f87773bd673572392eb2078e84880538bd331e3a186b69fca. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4ddb71e-6c8f-48a3-8e02-9f161b1b9001.json and https://artists.proofprofile.net/proofs/artist/a4ddb71e-6c8f-48a3-8e02-9f161b1b9001.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 0x4db803ffbaf9deaf1deb07c62041fd9cef5603f079438af7388d5912e59c444a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/US2X61301361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119cf5036d810124d62a99412035326dbb8b58874a5fedc31238a3b8e9f56464. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:22Z), 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/US2X61301362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01c9ad30810ec8e47af80624ba1aef66f8138f09807cd5b422be13a43daaacd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US2X61301363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd775e5c523921c1b11a1b32cf7bf9020a63399bc7a95c29abcd1205fdd9e82da. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:07:55Z), 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/US2X61301364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2f339b349a7ca43040e174e14f461dcf01cc9a9c7966496177206538d85488. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US2X61301365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11639969803fd46bdb787d0588119f1bd8cc2137611413006a35d2631a6f88f4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US2X61301366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf161a5d2c9fce164e386299f4a757409c3d40fe5939839fcba79a9cc175471e8. 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/US2X61301367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31578046fb00fe80f54ef7a9068bed992eb0a2c19337ed0fc1cb4df5279f06cf. 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/US2X61301368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8dc0acd499cc2356c33e6c171ad294d2367a9b02d26115cb4ad57ac0ae27f2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:06:57Z), 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/US2X61301370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526194cff237366d002fde464ba6492998ba2645eb7815f98c5a19def7542cf2. 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/US2X61601624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e9c2e7ef7baf4733c0c23dc4a0607e7bf899eb1929f1f79809cef448e451f4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/US2X61601625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047d274abe1de108c133e346d2406e043c4621c51ec857024600695cf5bbec1c. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:30:38Z), 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/US2X61601628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d6640db0a146c67ceb763c8a645945571d78c575dc5be0f20146cac12a6fe1. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:50:51Z), 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/US2X61601632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9da2b52af29dc0b7dbbb73cbfb3764cbea507fd5aa215930ccabd96a204b68. 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/US2X61601634.
The HooDini Chronicles (Part 1) [The Redbook]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69e06e4b4fba926edd750b51788a7a323ccb73a9fe3b7c587ccbd120d270798. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAFC2018185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36d72d32fd2919c29567d3fd90298dc2eb8e1544ea1f2e13e807ce0da0d7f53. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAFC2018192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb118d634a838aaa808ac8b9943aa6568deb6f6532a731cc854b12d4682d538d4. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/TCAFC2018209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff5349e78b4ea9df44812486ca1917783283b58eddc8c3e1057d6d46101ace6. 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/TCAFC2018267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc289ea9d522bdbd90866e4f1b2c80204c74a4d174b4669a2fcc9cb35d6a68bfb. 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/TCAFC2018276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9474b34015dc46f25a8355e97ff19c014b9e46b0884ac6471f668a6f140c6c1a. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:37:55Z), 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/TCAFC2018284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70084618f2e6a5231aff27fc2f6c85bed25299a07f0e9dc7b8e6745bdf5452fa. 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/USHM92246875.