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 0x99d91a92e62d34b37d6da4d27fdbbeb7a774259128a1b2543ff61a8cbcf55eea. 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/6d5dc59f-923a-43c3-904f-1839f2dde137.json and https://artists.proofprofile.net/proofs/artist/6d5dc59f-923a-43c3-904f-1839f2dde137.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 0x29465c6653322d8136d7abf608267f5d4fa128e2c9416d4cd972f80b21981c47. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:02:56Z), 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/TCJPS2266447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29465c6653322d8136d7abf608267f5d4fa128e2c9416d4cd972f80b21981c47. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/TCJPS2266447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe6de0c863df7bca0842f5a74b1256a14834bb2ce3b03fd999c10674dfb4649. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/TCJPT2299912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d2e407ad0cc72c1276227a0035364306ff90794a13b2ac90b2f5fc91918577. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:08:33Z), 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/TCJPY2327403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b16f6d7f6a9cdcb2b3e963660b03bf8a125e5ac8631a1252087f1591039fe88. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/JPL542300923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d164c8c4d8d71d1422b41470c97939989391ec8243cef262989dec24b4c9104. 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/JPL542300922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90527b927ae2dd6387dbda7595c639938251eaa31e3b825fb906db276ffc2fc5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPT2280965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328ca2f4df2158e6636a806988cff54d2ed20e0a1e0c809a765ae82d1828ccf8. 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/TCJPU2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde85af528aed90775f330b251a2c50a91d4ffb161d7ee0411e5a066bc856bd1c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPV2373803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b16f6d7f6a9cdcb2b3e963660b03bf8a125e5ac8631a1252087f1591039fe88. 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/JPL542300923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd543bfc766c879ffee4a0d519bfc4cbff856620d3af6f4c90558be7340ba3ec3. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCJPT2299916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d164c8c4d8d71d1422b41470c97939989391ec8243cef262989dec24b4c9104. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPL542300922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90527b927ae2dd6387dbda7595c639938251eaa31e3b825fb906db276ffc2fc5. 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/TCJPT2280965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde85af528aed90775f330b251a2c50a91d4ffb161d7ee0411e5a066bc856bd1c. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCJPV2373803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b16f6d7f6a9cdcb2b3e963660b03bf8a125e5ac8631a1252087f1591039fe88. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/JPL542300923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd543bfc766c879ffee4a0d519bfc4cbff856620d3af6f4c90558be7340ba3ec3. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:07:13Z), 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/TCJPT2299916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffee5bae0df94508c4650523b44d9b52ef9e3449b24af2752650940346002b46. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/TCJPZ2466417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffee5bae0df94508c4650523b44d9b52ef9e3449b24af2752650940346002b46. 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/TCJPZ2466417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2394f5e8fe25d7cd6a094bbd2ebb2f0293d5f634a6388cf5358dcb32902b62. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCJPE2543831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee4f20c26227ee91bb88e9d30821b3082d74f66e251ba535ea31c76847e55df. 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/TCJPE2544195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4131a16aa72231cbe76874fbd2e68f03de97feba968afec3504b94d6ca1580b4. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCJPE2544206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4c14e92b3d531361ee4136ebc8ac5c3f1016b6eea286016686df3d5b0aac77. 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/TCJPD2409426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2394f5e8fe25d7cd6a094bbd2ebb2f0293d5f634a6388cf5358dcb32902b62. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCJPE2543831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e40a4e870ca35d713581893c933e57aa62a200d87978064df03eb1c81004b3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GXBAV2286630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee4f20c26227ee91bb88e9d30821b3082d74f66e251ba535ea31c76847e55df. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPE2544195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4131a16aa72231cbe76874fbd2e68f03de97feba968afec3504b94d6ca1580b4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:41Z), 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/TCJPE2544206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20aeb58026b76e4c30c2b7fa673cdbdd4976e502212600d83f0ea8fe17258e95. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCJPK2569313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20aeb58026b76e4c30c2b7fa673cdbdd4976e502212600d83f0ea8fe17258e95. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPK2569313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe821a28e8255e05b3383914bc7a1a93cdf906cb59214196d3d1ef127d7ce47ca. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT66J2539130.