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 0xd154e980e1c356f126b10bc92ce60a891b24c59036996e005bf81fe4ed0fc2f4. 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/3d2c52ec-27cb-4b4d-b38a-ae149c1e19a0.json and https://artists.proofprofile.net/proofs/artist/3d2c52ec-27cb-4b4d-b38a-ae149c1e19a0.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 0xf9afc873bda70181e87315299e95737f91cb87036e30a1f6bbe39fc73b2857c0. 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/USE831512552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e36cf1905730905abc08accd8eee905400dbbbda01f57852d8d49201d92fdcc. 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/USE831512559.
The Hanging Tree (The Hunger Games song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7486023a819c7711eafca2b6b70558f12637a6cdd1d4041419be328fdcff4c. 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/USE831561474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0648c22006ebaec85dbcd00106c67971a28c5d41a1e65e1cab53b99078be6f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USE831561475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaefb3e5f718a6ed392dd89770f69147cffc8de9a5acdd17467483fda1874311. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USE831561477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513f48fd685fad9261dfbc22d33a75aa7ec48e681194b2d33907ebe51e72f4a3. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/USE831561478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cd87cdcaa0f3412c59564dc4b8a97e5e84f767b854785d24a5009276905f58. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USE831561479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e08b74ad4cdadabe28215b5f88a27ef94ef14f50d1f0cd650bda4ef294b93bc. 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/USE831561476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5597899a18ba3b0efbcef1b09181e6e9f729436354e76041cac7a767f7778b91. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USE831561480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4be885f21412df3b3b0ea8dde457c46243d39646420247c2301fe1bc3b75d1c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USE831561481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3245b26af4863da31d334ec80cfd39bcfb9f70791ede31318af798bc4d818bf9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USE831561482.
Stronger Monsters (The Music of "Undertale")
Beyond the Deep Blue Sea (The Music of "Final Fantasy")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb4706254cc33667280fbe22317256200e648aee4b6773c1e2303666f3be3fb. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/USE831559159.
Battle with Gilgamesh (From "Final Fantasy V")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d0e159038894e9b0105b67e63990911c3fbbe5a4747d9b6f02a25f4b177a9c. 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/USE831559156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad928d76ff1ab4142381b471b289051743c00261367db8657f3ad8b410ecf2c9. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/USE831591931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc71f39f120accc2b22aaacfe3687ebf21385a8973b52d9dfd9d98c7172d3fd0. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/QZ22B1760452.
You Say Run (From "My Hero Academia") [Extended]
The Only Thing They Fear is You (From "Doom Eternal")
Lifelight (From "Super Smash Bros. Ultimate")
Grabbag (Theme from "Duke Nukem 3D") [Cover Version]
The Batman (From "The Batman") [Cover Version]
Feed My Frankenstein (Shredwave Version)
The Last of Us (Main Theme) [Shredwave Version]