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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d08953f47219865c5b3caeb3d0f090c22bba57101b70b41beaab506efb75fc5. 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/0ccd64d1-a0c6-4c6f-b654-7a57ac8a3500.json and https://artists.proofprofile.net/proofs/artist/0ccd64d1-a0c6-4c6f-b654-7a57ac8a3500.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tiny Barbarian DX: Episode 2 - Ruins of Xanadu (Original Game Soundtrack)
Tiny Barbarian DX: Ultimate Chiptune Compilation
Tiny Barbarian DX: Episode 4 - Threat from Beyond (Original Game Soundtrack)
Tiny Barbarian DX: Episode 1 - The Serpent Lord (Original Game Soundtrack)
Tiny Barbarian DX: Episode 3 - Sinister Tower (Original Game Soundtrack)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63fd43b7e4efe4c83474820438a45e1e33448e2d2997a7b19ffe536730c8244. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52017371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3cd0ae34f3f4d96ce80a6f8fbaeae364a41d558d7d5b1b1202f01862bfceda. 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/CH6542438413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140f5c3926603b74abd3d0452ee701835233734cbd844ca4f564a7a39ac1c619. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542438406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359f784d408a207e01ce5d6aac219a75ac143e76c5a8ada5481b5da911b59fa3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542438410.
Hyrule Castle Town (From "The Legend of Zelda: Twilight Princess")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2a49cd427230c895b64e4d872f8e5cdff10a0cad101ab3a7d44da7b2b9d02d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZPJ32191644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2a49cd427230c895b64e4d872f8e5cdff10a0cad101ab3a7d44da7b2b9d02d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZPJ32191644.
End Credits (Part 1) (From "The Legend of Zelda: Twilight Princess")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7b1ce327f241691effb30dc10f8bcb15eac65ec5ff6796631ef50c555c8eb1. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32191656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f8bae5d23af28e84328b6921ca1e7bede52f2270fe8d4f5a1aea28a983f04b. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/CH6542438412.
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 0xfb2d4f18ad97396db29feeabc015d58a1d8c36b40ebb6b80f0dee4a6112ad05c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CH6542438407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36c8ee3b2b332545748188551c021e69e9faf94a80aa5b5411e943e9ddb7897. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/CH6542438415.