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 0xc2cd5b1ba43fa2ad66adbfe2f905be67bef6e319bf79aae84282dc294cd175f4. 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/8d823774-b800-40e9-95c7-6c650c863f32.json and https://artists.proofprofile.net/proofs/artist/8d823774-b800-40e9-95c7-6c650c863f32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dark Souls III Main Theme (From "Dark Souls III")
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 0x06e5af6b0d5e6b658fc37b86b00857c03f984b86fbd92b518a7f19c120fbb66d. 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/QZFZ62022501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21454c507ade175021342e813d3711edff60da20f5e2e056ccc59606015d88da. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/QZFZ62022502.
For the Dark Soul (From "Dark Souls III")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ef918dd8f36cf8fa0a4503865d6407f5ab04be3a0779bc174cfa5c63d91d49. 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/QZFZ62022504.
Lords Without Thrones (From "Dark Souls III")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9cdb65f31f10e82128d39bda2226a67ce2104f19b216c3ef1169811a2fc5eb. 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/QZFZ62022505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e832620e5277d49844060e198b1a4c50d02ce5b7469ee7d7d78f198cca330c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZFZ62022506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5656ba6423d21cc314467007f8f58fa3a6d58145105b6ee841f8a113e4c84cfe. 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/QZFZ62022507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c97a0a9a672fb0cbda4916c66dc5e5ac8b8d7f798fc369a4e9fd9d947ad499. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFZ62022508.
Ringed City Epilogue (From "Dark Souls III")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9d17cda3d9b96ab748eafbffeedb0ede666ed96e5d8df06a15bda48e5f6263. 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/QZFZ62022509.
Slave Knight Gael (From "Dark Souls III")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4a8b611d6a4f617bfe8f2dba250829e2193211c20ac21a4ff308d962d8bc6e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZFZ62022510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5258de6bd67a2cbfd3d53550148c71287a1985bdede0a8f69bf028764068e5. 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/QZK6J2046762.
Artorias the Abysswalker (From "Dark Souls")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1338563bb1a13bc9f1a7159d92711c89824b89c4454264bb1fef98ba9a520157. 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/QZK6J2046763.
Elden Ring Trailer Theme (from "Elden Ring")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851420faeca92630e37cd714d2e2aa06b92e276b6bf11b3af4f81bbc3b9fdcdb. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNWU2141943.
Elden Ring Main Theme (from "Elden Ring")
Remembrance (from"Destiny: The Taken King")
Brick Ballades Houston Street (from"Big O")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9944fd5c495f7eb88218188bce1d39b90088297c184120e473568e87f376f83f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZES62312854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3bedcf24413509a50e76f08e52601999b10ab39439303abd13e51d948282a4. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/QZNWS2371698.