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 0x09469365892f3d240b7d61eaa31e83524d5f4d086cd29128d4ba24de075955bb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75ae1809-0489-4266-b412-2eeacfe346ad.json and https://artists.proofprofile.net/proofs/artist/75ae1809-0489-4266-b412-2eeacfe346ad.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 0x94060d71ccfaeb0d93483bf0d3ded0f64bfc26ad124a1197c2dbc9274d067338. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZK6M2150410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96fa379e0115023859a046cfaa6ea314023cbd5f2f4bcb48908a37e513ff887. 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/QZK6H2198435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96fa379e0115023859a046cfaa6ea314023cbd5f2f4bcb48908a37e513ff887. 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/QZK6H2198435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1aa1a0df832f7e9687a3d96e0d2af28cb3b3e9650be1436718746b16acc14e7. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:36:26Z), 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/QZMEM2112253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9462dd37efd951b955974d7f6578b199996f0d3630226bcb5b23ed23485a0b6. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:33:12Z), 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/QZMER2168067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0efefd81bb00a75d02927768b03e76764184ef667eba36a2c11ab84aa7ecfe2. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNWR2158466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e4ff157286a12a8637cfecda4265bb5d70dd1625a8f0bd7164994aa47e395f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWX2189739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4539c6d6f68d9ad7009dba520902ad005bb444688cfb9dcfe0c94bd2db0a6c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZRP42102403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4539c6d6f68d9ad7009dba520902ad005bb444688cfb9dcfe0c94bd2db0a6c. 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/QZRP42102403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37be2e3563531c6a81dec1493507231bc59e266efd0685ef6ba8d6a193cc4350. 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/QZFYY2294040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266acdda87ac338a8214336613a72fedd1d39bb0dce0da673e77c989631169ba. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:55:05Z), 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/QZFZ42261206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2632b47ca4f3b7fbc3be92c320d6a730bcc06c622605c3e0b137ae9010c8b255. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZDA52254970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284d196b0be387da4d60b5f5efb2c7791610a124af3c17d14d8eb320ce1823cc. 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/QZES62253903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7352329e20a21ca8baca6eb6224292082a61735e4d87776954109524b68231. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZHNA2253037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7352329e20a21ca8baca6eb6224292082a61735e4d87776954109524b68231. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZHNA2253037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699b2df161a70162cabf781ca170f0f16ae18b93a89e1a3ac014ef0b7e0c9446. 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/QZK6L2223382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac518185659197bdd410b3eb333054c235f92e82490a80ec3fe0c39312d431b. 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/QZK6H2297795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e3f4005917e201a3fd7293f37e8da68678f4550934dadda41366b2b1d28d26. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB82236639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e3f4005917e201a3fd7293f37e8da68678f4550934dadda41366b2b1d28d26. 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/QZTB82236639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe744b0d4e336a3074f6b7968d6bc6d79811d71713f80f1b8ff657cf46adbba. 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/QZHN72331820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe744b0d4e336a3074f6b7968d6bc6d79811d71713f80f1b8ff657cf46adbba. 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/QZHN72331820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8513fb7c3f337fc1e90ccef46d3aa8e0e61cd96956e1be987ee10e83708d0438. 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/QZMEP2382413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8513fb7c3f337fc1e90ccef46d3aa8e0e61cd96956e1be987ee10e83708d0438. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZMEP2382413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a329f32cee145eb7de0db753133e1c48944b861ffe2bed8bb1984e391d0278. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/QZWFF2311642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a329f32cee145eb7de0db753133e1c48944b861ffe2bed8bb1984e391d0278. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:53:48Z), 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/QZWFF2311642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79531fb3ab0d3aff966fe7813b361f462279c4d5d3be62b96658e7dbcaa61a00. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZFYY2455475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe7df501e2fe4c4eb0719bb7d3adc76ed64cdc8ad076bc741a63e85b4aca04e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/NL8RL2409559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5fbe75789e80fed18acde58da2756b56da7d93c8c53ec7c4464ae9db48794b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:41:28Z), 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/QZRP52425164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38a475765fae7116114439dc5501fcbd3e42a4d9617f90eb1d498d3ebf79ebe. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZRP52425165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986ff431a140b97a11025586b0bcb1dbf5a3b54e6bdaa71ba90e9091f5df9c35. 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/QZRP52425166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67a7b9b7677943836f5e967744d7bb6aa1457e2e8845a8f3c660333b87629e3. 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/QZRP52425167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5fbe75789e80fed18acde58da2756b56da7d93c8c53ec7c4464ae9db48794b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZRP52425164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38a475765fae7116114439dc5501fcbd3e42a4d9617f90eb1d498d3ebf79ebe. 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/QZRP52425165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986ff431a140b97a11025586b0bcb1dbf5a3b54e6bdaa71ba90e9091f5df9c35. 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/QZRP52425166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcea21497484d3f12d0efef4ef6db8b7e9902bbe5a63ceec7e35eafca4785e21. 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/QZWFS2452382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015f2c956007a2dedf916b0138222492893745c7a6d88bdc62a057fa184cbbc0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT3EY2408851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbbdde0b2576bd8c3d8dce79249b446e63fe77410592c88d2d44aa729f9e6e2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3EY2408852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3026a0bc267fbf84087867f04ec116a906056044ea638285272e19ca9fe324b1. 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/QZFZ72530206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3026a0bc267fbf84087867f04ec116a906056044ea638285272e19ca9fe324b1. 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/QZFZ72530206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1615e287dd21153e44cb260acbf74104339d0307002baf818aa9e6334b25a05. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZHN92559658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1615e287dd21153e44cb260acbf74104339d0307002baf818aa9e6334b25a05. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:23:27Z), 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/QZHN92559658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccece18d8b5c3ade04e4431166f967ddd077256afb495dfdbdfe5981d0e71708. 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/QZQAY2535662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd566b8ff88a32ec1571c6283b21c14f3e9bd2e80fe438bab428a46cd3716387c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZQAY2522555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623f9f0f4dd45757a0fd4a868ee6a7a0dcaf34af4bca46e1a007f008ff324eeb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZQAY2511657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99525720651c17525350583a60506f7f7477aa65338af43a77e7bfc52b38deeb. 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/QZZ7W2499752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0109c9512b2391bdb2fc5b18426ace4909e4d05908344da022202c67b159134. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWY2224997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b807938686336debf98232b73c667f32655ba1b80cf5888eb61a11812bc8971. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES52274713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e94ee06aaf6c112177e0a5cbf73aa2f9630a9f1f39fe4f4b7a373a1d3d6d71. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZFZ22253507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cce1674afc604608c9c77d5a84ebdc3537f62ba89eb3f1f4541511b277d71e8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZTBE2479474.
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 0x2368bf51af9d26db818f6f78d435f464e5f0c582b208bb732db0d39b7fcf4ca4. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZS632487087.