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 0xf2187768d8debd8c3f904fd39e69f87cd30ece6e0c8cefac98e112440dec5fac. 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/b7b99c1f-2e4d-44e9-82d4-a731b1cc1c75.json and https://artists.proofprofile.net/proofs/artist/b7b99c1f-2e4d-44e9-82d4-a731b1cc1c75.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 0x38f0c136f3b228a464abb723dcb86e8f705c81c757dcb05f8576a017faba6a4e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BAA052232593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ef0fef308fc42c9e695c79880b13d29254b1b2511291a9b772d18f5e2cf5b6. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/BAA052232598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44d78382a90e0985d3ddb31b20e0ce5d56acd0c1f341465f641dea79aa51487. 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/BAA052232599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2733e7418d04b43ba720623d939cb52bb32ddf707e8c1fd69d41e158924dacd. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BAA052232577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa823cbae5985e0e93ce43072e21e947415a923829fba2efbe384bec8cea21fc4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BAA052232578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49cd300e0ac4abc0a4d21e1919220b55b4b892b9f8f18bcd48496db9930e946. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BAA052232579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7d648ecae262f452022e298a0af37aa5b63f686feb88f5dc23585db4e9622e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BAA052232581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35f98713bce327451408bffbd960534bf8d39d66f7421d271d73ed50fb0b925. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BAA052232583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b0b6bb6a27780a7aac41ecaa65e71e5bf30791ca79b0d6aed5c74bc44466f2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:49:56Z), 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/BAA052232559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f0cca8c764f4742e621fc357f1ce3d35c0af00872dc6d3c88aa4f819e46f1d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BAA052232563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd91f37b564efceb781e00060857a630ae1037ec8e4e479e2fd6791f8dab661. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BAA052232564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a862d6c48bf4e03a6861a8f0310389d34b8a7dfdf3e10864de8df42f2aa93c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BAA052232565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761ed38fe129c6fceed69c0bb72bb7888218f6678cfcb17212b8e9ce4b4b40e5. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BAA052232552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb231a16f352862fddf78cffe2f825148bd000f1dad91f66390d53711b20f0c1. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:28:56Z), 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/BAA052232553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bd26d8880982a4f99e243c7580f0b8db272f29cc660cdc45b2904a12e7794c. 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/BAA052232555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf280910479dfd7393c077699d011ec7bc59402be26cae942fc37e6587dc04b0. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/BAA052232556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c28d248df832433e741ea5dde7d775d63c296957d96277de7d44b8314e1578. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:43:23Z), 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/BAA052232558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf354bbc06c47ac10301646494f84b1171a0a7c646e396e6716796d70a59601fb. 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/BAA052232605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80a03cbba1315350c066fb0e37aa8533218726d9867b3dba411eeb6584d0b7a. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:33:08Z), 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/BAA052232606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26912b5a87e599b805d63d65477edcf95c6ef30b37d9c764311057a448aafca4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:28:17Z), 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/BGA261412904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbcecbbf75d30d5c350034093fdc23e9bba1e6d9c796acf768e77d7cc8357d5. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:55:53Z), 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/BGA261412905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86153796a7961542770a5cf210fa6188a5a70be31272f8fc7182eeb0225d20da. 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/BGA261412907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dff763638130c81331296103429e3a7370dcca9abd579498eaeb8fd354c490. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/BAA052232518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9513bc53c13ca969ded4eae70d3c7e19c012f172656e66b5e78b270db4a06df. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:52:55Z), 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/BAA052232521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff77cb3a16c0e09eaf95c970b6d2ca9c51c16fae08906755d8827040e0bbab7c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BAA052232523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f946b28cc008e139703c79c5cc42f00b4ed69cc8c66269fe71c56b66082cc44. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/BAA052232527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84546d5f52aae46050b9ac6b2e5dd6b45e800c3df7cccd26ad9d56eace05883. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BAA052232528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab06b25c913631444377131dd0629b2fdcfa3f02df3343ba8de162c02bc92f8. 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/BAA052232529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370e1c0aaaaa03404ba3348da244b6869a05f2470f140d347e693ece04e77238. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BAA052232533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99168703a2abe05ac765492e248dda060d92867e9882138c78f3250e32c5e778. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/BAA052232538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aec9ae7e729c6292e981306b39818ad6c90625ca25c8e18a1cb2d18c93d714f. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:07:16Z), 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/BAA052232540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd1108fc341ca4ce647ec2b53baa1fbfd5e7aa38fff470583ee4f3c3681b2c9. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/BAA052232542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea717960bbee81efef33cbd504f56c81b761f3429271455a68a10e2e0525ff2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BAA052232545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f6009e8ed126e5f8b02f74abbb65916432c55940ce8e620f445d4a51a8f522. 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/BAA052232549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031a7fe628c68f4ac5b119c7410c24a17cb139f8b4978d51b9767572a6d2885f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BAA052232550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5644ccb788d82b36254e6837e6e76f03a95f7a74cbad187bb3e2e452089a220. 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/BAA052232567.