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 0x268b5879e4e064b801cdac247d3f5dcee4bd057bad31e2548cbc66b3b1077f54. 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/949009b6-0f7c-4404-b1de-42bb7d9bcb5d.json and https://artists.proofprofile.net/proofs/artist/949009b6-0f7c-4404-b1de-42bb7d9bcb5d.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 0x78df41f9e5076a40fe262f2086183e764abf8b06da5f4bf5aa742987c0ae9a11. 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/ING602000010.
Jiya II (Midival Punditz Red Room Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1744e4dc281eab8c47cb25da884589b061d6cbe4f11c948444537a3faa43591e. 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/ING602100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cddaca56845908be8a329aa0e3483c367544a7716ec9e63dcefb31ca24b97d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ING602100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725ec02d77f513c54893e42b5101752fa201646ddce7c398c100c29c556efba0. 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/ING602100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9450f97fb0052a63609c467d88e3f93417c6cf4327d7b8d3ad5f693f6bc890. 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/ING602100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54aa3b2d9bf5a3d80a7e5ab2a02379639932eb53adbc0e2a6d3873277819b33d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ING602100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd6028fe9f2573c13945dd245106473922d57838b555df28e58d0645deecdc8. 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/ING602100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb3f614673c31a6817f9a6df2611b77539b8f962d96c4a47daed08a922e1aba. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ING602100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4289399a8d5d49a522a28e7a294dbec446ff67b4074f7c20c7ff016a1402abe8. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/ING602100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6ca557e4316be4d67f300ec699278a6804c6f881b70d21d52a7e3b4b54a07a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ING602100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f45eef8503b034042b12ea7efe9fb5aa8321e1f22e23a6a612aad6ba13fb0e. 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/ING602100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a894f123fb8cc5213cc8ac81b95dea124780240b6f1ad4abb1144eab248cc1b. 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/ING602100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd6028fe9f2573c13945dd245106473922d57838b555df28e58d0645deecdc8. 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/ING602100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb3f614673c31a6817f9a6df2611b77539b8f962d96c4a47daed08a922e1aba. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/ING602100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87325865d6a8c50eb5fe0046af53cc9ffce907bf75a84f912ab0a2522f39dba8. 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/INN2I2400411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe54da2194718e074950b1a46a4ec23dad65f560b561fe2a5047678b067634cc. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/INN2I2401951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a74013265112b63113299724d4166afb6ea2de7eb6972d37fea0be8562ccc7a. 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/NLRD52416642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce101cdb5ef60c1ba485b8af140950de502c2f327c234058a5d6dc128913bee. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/INN2I2401953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebea449966b8446d9a439103e3d1c503f208e110f4027eb0f47edceef865de3. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/INN2I2401950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5187749b3e22c2f3a33385212688f96989297fe351a85d5a008e73288ce39eb. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/GBEWA2406101.