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 0xffea861a6709304ba41e7c668057dde401757eec2d787db32da8b2dee13608cc. 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/e59314ba-a2a5-4ab4-a6c6-86a618755e5a.json and https://artists.proofprofile.net/proofs/artist/e59314ba-a2a5-4ab4-a6c6-86a618755e5a.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 0x1201f50c6b72138aa772043cf545faed2937b07c9afc2a5ea0a603d25dd4a034. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZWFN2385653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343483f6ac0a6f7aefaf933cec60ef00000a79bcf84e59c7df2a50bf1cf133e8. 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/QZWFQ2347612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14a062c4aafa33ae6882421dcdba7e71b91ecdb428fec9b4dc573fadbaf0452. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZFYY2472265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccacaa6c0451a034c5c4437fa276de8b0ad43e00dc138b9f418e7830acfd8078. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZNWX2482785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc901e72999ef2ee5d40ca4b81d09cd2053817dfd5c037b737622fcf34f59fd. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZZ782425745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31ead0cd9862823218ffa6ae1dbcef91554a3d39559d2e060baf9ad9c4fae14. 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/QT3EZ2489050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673113aa82e7e0a1b3e9d933d43288b355f496ce86cb853d6475fee335ff953e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:43Z), 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/QZES52516701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe810a8aa59e6dd674ef65feaf46f1e3913197beec63a3d46a4099bb10ca21d3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN32582407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f77ec4a4ecae2a2163d3e00aab1eeb6dd382f21f31c2932eb1dd954e372091. 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/QZHN82511598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809a8716812f2808947b3540c283008ba1b8248e503ab37f5a44f351ac32b532. 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/QZHNB2514166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1c5b48dd2d452989f03dcc7d6c3af25e618d7bdf16f28cf6b8ace0ee499081. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHNC2572185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8276b144a7763851e5807e2fdffc4787f8ca04bcca469787e96282f405bcd4c. 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/QZK6P2556326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8b53d25f182238f61f307bfe6330b88229c308213ee25f7b249bf30d35d257. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZK6N2527688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeace45b47bf7be8ac6871643c3b54a5b60311b3c03bd0316289703956123f8d7. 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/QZK6H2519999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738f6d5f6405b98f02fc47d8805a2d2b193feec403188b617b17ba6470ce5957. 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/QZTB22509202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16022f3e0774699fd7c1d31ac91a90ab950894ec42f7728715ad08546560bc36. 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/QZWFL2575200.