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 0x79f85612bd09231b0ec0ec661993354d90420e807847fe62a27e5f3ce438b406. 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/2e42cb0a-ca47-4aae-8a10-8faec338209d.json and https://artists.proofprofile.net/proofs/artist/2e42cb0a-ca47-4aae-8a10-8faec338209d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xd46a32e77248412bb5a68346e284bce692360d9adae8cc73eef0b67577f304c7. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2034792 — a six-check JSON result.
In the Mist (Piano Covers from "Xenoblade Chronicles 2")
Faded Hills (from "Sonic Forces") [Lofi Cover]
Faded Hills (from "Sonic Forces") - Lofi Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c65bddffb8fe05d4ae695a5a7dcdb1be8c537209c1eba203e429bf4a817879. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32118755 — a six-check JSON result.
A New Venture (from "Sonic Rush Adventure")
Beyond the Sky (From "Xenoblade Chronicles") [Piano Cover]
Schala's Theme (From "Chrono Trigger") [Dance Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebb8c40f0f5823520955eff7bcd2b842eac8574d6c95746c53a3d8fea0ebb2b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32222405 — a six-check JSON result.
A Moment of Eternity (From “Xenoblade Chronicles 2: Torna the Golden Country”)
Dreams Dreams: Sweet Snow (From "NiGHTS: Journey of Dreams")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747c319f4b43eeea5913a72224ad5bd01486fe5f542110d8f007c23020c2e463. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32364644 — a six-check JSON result.
Where We Belong (From "Xenoblade Chronicles 3")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b848cc804999832a10a983ddbc8ed71ed53cf3c1cc9d4ffc8de902df50c6b4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32377627 — a six-check JSON result.
A Step Away (From "Xenoblade Chronicles 3")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fa76eb6f96e9d478cbbd7593b227711d650867f5eb63ffaa70cab9dc77d343. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32429516 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0cb31abd25a80e53d5b1a02597568e4ddff6273a41a4861b56a8d9f61f839b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32439152 — a six-check JSON result.
Uncontrollable (From "Xenoblade Chronicles X")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe4d80ed6f86f3e100ac4954f77d6e79644ace35787ec3418246eab80786b32. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32481512 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd44c72beaec6a5689f3e1216bdc6928c3259e0b6dec718d671fb77862572524. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFK2517313 — a six-check JSON result.
Welcome to the New World! - New Age (From "Kirby and the Forgotten Land") - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa05906e5659f8ce603396c6451a5756d799568ceeb2d170c5ccb289cac933fa. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32339444 — a six-check JSON result.
Margit, the Fell Omen - Lofi (From "Elden Ring") - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb6c2bec4de11bee92909047fa6014aa447b2bacd88eb38ab66000bd043e65e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32374475 — a six-check JSON result.
Cloudtop Cruise - Chill Pop (From "Mario Kart 8") - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462b05f74b22df7c6e39974fe62123ff04a47b0008b7e388d1988f826df7b332. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32358887 — a six-check JSON result.
Escape From The City ...for City Escape - Electronica (From "Sonic Adventure 2") - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e969c20976ea95f275f89d075c5aa39087fd79a56bf7e8a295e5c181160132. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32305109 — a six-check JSON result.
Unknown From M.E. ver.3 - Boom Bap (From "Sonic Adventure 2") - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a8508e5444bc130a8b1a05187cac393bd5db9bd430540893e10eb5d98f0935. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32305116 — a six-check JSON result.
I'm Here (From "Sonic Frontiers") - Cover
I'm Here (From "Sonic Frontiers") [Cover]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bacc56427dd3cb1ff350a793ba4eede81c1b45c0680430d167b57f33661beb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32244956 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe814c0db3373df5ae007a63b54ffe24a2cbe3d56484e79497441867e0420e8db. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32264106 — a six-check JSON result.