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 0x466ca5cc8b014d156fd8da8ca11a64b5aa1ba92c96b2618d1706b6fabdb8c6f0. 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/0caf08f4-061e-49cb-b39c-1010c0fe6486.json and https://artists.proofprofile.net/proofs/artist/0caf08f4-061e-49cb-b39c-1010c0fe6486.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 0x665606e97a3681a373a0b01f5e3b7674a9ee1650e2df5392343ba63a908a6e63. 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/TCAGJ2266585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42522239c7dfd0f6278eb1ccfc31f2fec7db84ba97985190abd7aa28e04a22dd. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:45:46Z), 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/TCAGJ2211067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc6995ed152fb051b0c2ce85e387f1aa40cba2034cac6f547c5a1def3cd0461. 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/TCAGN2262277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20f886c15622d060535fffd8d146596eef008323315c24785fb845889315f27. 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/TCAGP2261868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113273916abaea0c4ce9e95c2b2765df2b8b3d7459d1e01952a1a20c2291ab9d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAGR2291826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc830838e42ab43a5a09ebe20e788cfdbfc40a4b602c80cb147746a52e4bc33fc. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/TCAGY2374945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6270a4f8e281e87a14dfb39e32ecce5d405e4fae5d9d7f2fd7c886734ea13d8. 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/TCAHD2327429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4f6070cf8100c5a73afb2f0cbca79ec6703ba877575f4ee6f3d0e8a637e187. 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/TCAHJ2370019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02faa741dec4d1a768a8a93599b1247855c26fe4708909c1f95605758af53500. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAHK2384071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad296b6145e40b50f2f896d9bb487a946ce48814efef0c1fce4507c2df959e8f. 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/TCAHP2382157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c0b90a95df28d38d3e6ec2e53f7eb0903c487df9ebdb9995e4acea1d2de518. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:25Z), 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/TCAHQ2389281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79808fbf23b999dd9a9830ad6e44153d5bc1d48fd55453575ca2f729d54f10a. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/TCAHZ2443722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c24a4cad6c86b610f8fcaf994bc39dea1c5e9c5235f2b8737cd7279b434ecb4. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAIA2459328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ede89a4104ee99b630bd3d08122da57e07d8bd43dae6acd81e48c1fa7972aee. 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/TCAIF2413355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17af61f6dc0f40936d94d48ff86c5dcf988123616a380c3d7adcda97d18ae506. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/TCAII2441495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10739205ecf30fe6019380c6a8509d931ce8dac4aa167629a22cf9f4ae9aa542. 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/TCAIL2447678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a749c5d8bfa484b5f662b9ba7d4f6eeab1dba8f6760d485e9bbc4b726175770. 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/TCAIL2498198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf0c2a3ecb93ce3baaa7fdcd80c2b0e1b5eea0f24bcfa65c0066ce526793257. 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/TCAIO2431144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8df2abbe246a39528886825ee1040bc0cae0e86ec1bf1cf3ca16eeafcf02da. 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/TCAIQ2408300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585cb3247c233fd81f5ccbaff494d6622752e7626004c57a6d9116c4023db9b0. 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/TCAIS2402873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f1af57e77059618a500c2493fcca1c78b052bb51ab9a10fee6220f258dfbf6. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/TCAIU2482483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f187535a27af91e67f9850462faff74eaefd707490a04e29c8a4b801ad799e. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAIW2499438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537a06dba362b7dd366da1e24b7944985d878be946064fe0e8db35f617bd4018. 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/TCAIX2456841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72e0a4f235898ccca5a30d2bfb1383d74794509207e17bc805e290d2435cf37. 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/TCAIY2424554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17808bd963bac1ddbf6b9acccc9633f29a03e8562fe29b6bfe65aa1a91467c03. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAJB2461021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61257d6a7fec4752c1292278e8120e295252c883ed67eb0f2c2cd2d76a6e0d6. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAJC2425021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3c30049b58313e762528cf37abcc009ced1fcd3fed9e3a324a1c22bfe932ec. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAJB2469413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829836bfc719a9ecaab8979a6f54fcd83da5e8b6b24fa8bdcec2b49e2232ca3f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAJC2463911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f421180096daf9e1edd06445324adb4fef3ea19e309e793bb6dac784a5bd60. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAJE2548355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407884b72d19d4b97f3605da944c0a87379bd12023b22bc95a07aedf2202e2dd. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:00:48Z), 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/TCAJF2583171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219b25dc63934132abb6f8065872878701ab198b9ff7ce5bd3c4bdcfe75565ab. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/TCAJH2520265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199257aec72ffdee4edfd40355bf6ceac83db2e609148f0ed3ebc91efe361c24. 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/TCAJV2587762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7281fdcbea6f70a5566e98533b3d144588bb65ea17281907ebb2a6542d09022. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:41:34Z), 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/QT6632533703.