1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf904aced5dc6c3034d1f8f6bc6ef32b875bdb623aeb313238e7406e1c024bba4. 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/13c786b5-96e4-42e7-98a9-3099d5c465f4.json and https://artists.proofprofile.net/proofs/artist/13c786b5-96e4-42e7-98a9-3099d5c465f4.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 → block OTSBitcoinBlock must exist at that height 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 0xdef0b467b3ae6f0a44b039a006b70bf9dd546717c08ef21d90481de381f7da93. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZRP52446157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03a2a8c7579d7a6b188bba06fa53878544c56598726fed203bca5590486439a. 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/QZRP52446158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5a6241de6169cdcb86cb5fc6f8e5020ca075750d60bb4a0779eb8d51cf7720. 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/QZRP52446159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3273871fb55a20e19c547c7d7ea83699552627e6bdf81c5b75a8ec3a3fe18b. 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/QZHN92284108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6956a68aaec3bd54c4fcfc107b126e14f517e412097b9f5a9f8ffe20abbc18. 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/QZMEQ2478625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc04cf008cefc2bbef8b3c418344148c24c462087e8ab76a9bfe81914dc89920. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHN32412238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533f652252adbecc272473641b286565c5a6891a6d08f6c45e2766eb85268743. 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/QZTAT2250992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa5080a67093da45dbf96789678aa28f3e6b68dd139d611c848752365f35343. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMER2218548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4bfa2cbb239b8aa259780a5809a68a1c7ff0015ecb95b7e8e087cd7b655fcc. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZMEN2266276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921a335335e6449d1bdfe1b25ee9bef5eda183a13b95547318311b8e212a1658. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:11:43Z), 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/QZFZ62204979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13661f4cc407de36e157cd017666fa69fac1513ddec259b3cefadfa8aef37ff3. 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/QZNWU2120582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fed65609fa4b9c2e53502a606ed82acff5597f2b84cd09e9ae88de0826f703. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZMEM2195355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae458c6d619988c5a73dd51719e7a2402a23074f77109a06b7df49d27c482784. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN82129568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779cd7cbe64f555ebe695862687857197da72262561ccce45630cbf5a78b1a5e. 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/QZES62180911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa087bf3e1039dec925dee2086f872e1caf9209dfc5b0bc2483390616bd81659a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ52108604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de42e9f57a03daf46f28186cafe39dc871499b90d9c72745c256a4aac130417. 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/QZFYX2137980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5dbc17199d337b1af82c16b0b3afcb141c9036f091c18eb5c91fbbece4318b. 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/QZHN82065350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3bd494e8429272434db956241aba89b6344c6da1791e3acd41d57b5d7b05d6. 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/QZDA82020328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c57e573200d2f5bf012ea0d8a0fe7b5a2175388a02b0edb766e8c94a0ee2967. 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/QZFZ52021841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18a30c3672f362db144de586e7d0cb1db2c99b52ab5a121d4ba3f7e2a1d0563. 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/QZHNA1908743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9fa9d509b67c8ac1296bcbfb2c5bf00be0cd77a52fdca45f76cb2868a5e71c. 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/QZFZ71990706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00de836fdedd0524cd1c84716c0067c7a38ae34ac2dbd1d1a614c65ca334f305. 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/QZES81905056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc15c1b5fec520e9ddb1419302d5fd49fcba1e1f10fdb267eeb2e398dd0d03b0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZES51965567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0407e0e36bd8eaa427ca46cbd6513922f998acecc4ba3d264475884a38f424e8. 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/QZDA81920347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed00cc24239aa1b7fc7a05770a70b5cadefa7645b2a30c93078c783eb109923. 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/QZDA41906487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace61865aadd63c42cbfc0604d2e48e27cf8a807365bd54ca6a368cf2067960c. 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/QZES91896934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe785d59aa38c84b6c6fda25960029031bf27f236bc5436d6d59139662cf1fe4e. 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/QM2PV1888628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb88a2755cc6f9372ffa5be7e3272a39f6b866332606796ce48b8183fbb109e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMPKX1812521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e72368790f56c0cc68a19d9622c88040d3eb62bb982a39881fbeb42b698034c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA81854027.