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 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 0xa74b4a5fed0f8ec64d292a9033ccdfafe0452689146d5f6983d5c898e9347384. 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/bb5391a2-2378-426c-9f5a-1e73753ae160.json and https://artists.proofprofile.net/proofs/artist/bb5391a2-2378-426c-9f5a-1e73753ae160.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 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 0x9ea96de205b538c75886da362621048008b0fe9320f6387b1ddac91584f61123. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/DED330537570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc9f45c4a1e2f39529c6b71e52326ca611eb8d2651126dbcd42a105e260342b. 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/DED330537610.
I Gotta Move Out of This Heighborhood (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f46471c26b4c11742522b54b5d3554933cb43b9c2d69d8d0203fc3fc033bed. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USL4Q0854257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfa7dc329bd6ddf154bb55a594dd2590547c102fd18ba59d3986371611410a9. 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/USL4Q0854261.
Inner City Blues (Live) [feat. Jim Kahr]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f1705f271510ce2e8d9c63c2b5317d7671992cc4ddfebba5b59dca198a98b6. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USL4Q0854262.
I Hear You Knockin' (Live) [feat. Tom Principato]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063223f3ec446813516935f44caf5572b5820913cb1e22f82d33b03c09ab1df6. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USL4Q0854264.
Thank You Dave / Dust My Broom / Walk That Walk (Live) [feat. Boo Boo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbad8e1008ef852adc1f3de7317db8556f06f8aca638d08e08fb85d28d7893e. Chain 2 (Bitcoin): anchored in block 957210 (2026-07-08T18:28:05Z), 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/USL4Q0854265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9888d6801b17c10876a70dcce92d6d6a1593be4b05c2935dcce150ca6b31c803. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DED339811330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d1b00466ac26d86140620ca8a38001cb5707b4a52c3bd1f9abe2c6fe118401. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DED330016580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32efccb764e9f3648e13f35a6469c167f94ebe452ab2f2e07ffd68b340d52f31. 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/DED339811420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5825bb3600f19bd74b0363930b4e467c5656fb9190327d9450536ab620285d16. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DED330016570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58509a4b1bb6faac06cb7644d838cea0de179e692c3c2d966314801f14c3bdb9. 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/DED330121560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50da1a6ecce53f5a7533f81801593afc0c0e179342a5b90321c73bdcd47873f5. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DED339811360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50a3e7f852a8ead012a41976d29643748a25b7e738c0d1a9ed437ad315f24a7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/DED339123140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c2afbb90d6347fa14d9aeb7945ffad45bcfb222678764f3135e3a9b03741f4. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/DED330844640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441422597c3e868c929612919ed3d947c295f059a8378029539ceb742158d85b. 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/DED330844670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef85df74e4eee7a272101ec8152b3e98334488c7b674fd2193152dc9d21454a1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DED330844680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b7a271a00f1208e9d1b9327b13f640feddf7a3d2f5fb4d004f044c9d8e9282. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/DED330844700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c23396383499819af7cc9260058c6a0ad544f5c89d982555f420a9f2d71ddf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DED330844730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5eaa680f2a68cbfdcd85cf8c08ce1ecf73d16fb01cb09acb4fbf1142c0abc5a. 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/DED339501280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc97ebd0b3f5d116bc95ebf0555fd6131dea39ab330827eaf622af8acb1d66a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/DED339501290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efbced3a412a13a769b0fe563e7ef60893ddfb523eea38a48bc5933fa72f1bd. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/DED339501330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20882df21e8bfb39f1ae751d3125f6ad0cf7bb3691addb836e67eba88c22e9a2. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/DEC831901019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb573b3988b81b8786e55f8ac578694f0189f04adb3b2a26c192e6b64ad4409f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEC831901024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702a9985675b5fc25916f708d11a4611439b8b7170f0b3f2c082494afe896109. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DEC831901025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0064df14a1bc77d51a974284d2ab3c48d8d5a1f2e294725da109497f0eb734. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DED332387730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c17dfa30dc553307faddd1c99c13835b97d3b48ac6a693a2b069080870c726c. 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/DED332488110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7963f31a933adae5db6757b702d3a7c25b50c95bad4664c0480d4f88fe69d7. 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/DED332488140.