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 0x29b52ca163019c48ffdf4922439bb5588b30044043a2d15bb418b303a7e47a74. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01092f90-a9d8-4a79-81e8-fe19ee3cdec8.json and https://artists.proofprofile.net/proofs/artist/01092f90-a9d8-4a79-81e8-fe19ee3cdec8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Winding Worlds (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 0xca5dc442eb828b2b82d47fd78d15463c4a05beea3ad72b5a5fb5ef1d20a3d099. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN32031680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e2da540b84351fcdca04ffebceee5b31fb734caca7f4b1bc52fc1e220194f0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZTB42283032.
Dwarf Fortress (Original Game Soundtrack)
Dwarf Fortress Cards & Ambiences (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a7093b771f075da4b0611a5f5934c06dbaca87fe2d5ba6a6d0c8f67bf747ad. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA72329779.
Goodbye Volcano High (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd693fca1d565933dd1a808fc4da8af45402af3b84324c3be710147a5f68ee01d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:20:34Z), 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/QZRP52392701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cfe3c23dcd6864b113c35a6d6a2608a6b9a7938ce626fc1497f4ad45358a5e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZRP52392704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc89bd72b3289fca14c85fece33862193662e857440f5c1f85b01466c5ea1f57. 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/QZRP52392705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5283989a915a88a4cba1deff8879e816b0f9e4961c63c69a7c6b6efd4fa67f39. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZRP52392706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b088d9e234a4a6efafc4ca2f23e33d6e2f5b645884bc33cec8d00ed63e53d76. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:21:38Z), 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/QZRP52392708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287cb65aab0d65fc98127531eec05c88b8b9e4ea2bd4af47ec58575d452a089a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:58:00Z), 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/QZRP52392710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9403a3ce65816709ebf741551790fb6ec1a90da6ed6638603bfbff7e434ceef3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZRP52392711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07326ad63b2e3f771a81ccb111574931fb17432b14cadd20b3de9d545475e9ae. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:26Z), 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/QZRP52392712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4694b18e080713773b73e869552a9905c9b6bb54227413c4355df2fcbbfe777. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:13Z), 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/QZRP52392713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a0bc8a61a4635c54964c4f9ad7320babb5270c6d72815611ca0a2b48567154. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZRP52392714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09992809e3b95ddf8062bc804a1c6679a76de141c349e9ec7077330ed391c298. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:21Z), 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/QZRP52392716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e854be30f5017269c76d6562247f9f387dc77883d612ce8723a309b2717c79. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:45Z), 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/QZRP52392717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9fdf311c7ca848edce533aee0aac1c9b34026e67b396c902704836785daa8f. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZHNA2441464.
Dwarf Fortress: Adventure Mode (Original Game Soundtrack)