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 0x3379602f8d5b28ad354c9c1434d47ad9de79294a34394091e3d43259d6f0678a. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61041ec6-cad8-4121-a96e-013ef530349d.json and https://artists.proofprofile.net/proofs/artist/61041ec6-cad8-4121-a96e-013ef530349d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Machinations (A Five Nights at Freddy's Song) [Original 2019 Version]
The Burning of Drafts in the U​.​S. History Project
Birdboy and the Forgotten Children (Song)
The Burning of Drafts in the U​.​S. History Project (Sad Minor Version)
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 0x0fbf3575e9187a766a25c343b4e3aae8920d496f46ec6ded913b105bb18727af. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZMER2273383.
The Name of The Game (2021 MIKU EXPO SUBMISSION VERSION)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b264bab010509bfe4899b152eed5891ab50518b837809153cadb7b42a650bf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6F2294432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764417e88dd34cfd1aae1b8c4af7f681713662006d08d487a2798617b53d28a6. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZK6F2294433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee4210f970e1fe7b9f36d166be640166b03f1c9e2134d6cd45c8e241ec225a6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6F2294434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8cb2c24bc291afd1a63d6a07e72710d7f142b0a492847bd5d8849084618a8f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZK6F2294435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01200d11feaadfced2c5a82c7f9efaf72366a04267af4150cf83d8dfa9d107af. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZK6F2294436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa565230cb194a3f137dd5b164ede9a2b80a0f8230e2a466566303e725d305a41. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6F2294437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575ab4f6fcccc0d47d3f015cb5d686b9fd292be79a7873aa64cb85a92196228e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZK6F2294438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0581478e894e4e4bdf3f0a0b9160f86bac65a6b1e1b1f5440424828be1fec4f0. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZK6F2294439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93197bea8702d0839bcd5e8bd18c9d6d74183ef3b03f3b200eb56f7c7c54755. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6F2294440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f1adc10addacc9ecd8f60decc8e97b53ed7d77bad494294e816645423168bc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2294441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4098c9b59d076b8df6c4bf6cd921f86f89551a95cbaefd0407b158f207bba3ad. 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/QZK6F2294442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21da728ba3cc96802f7f1caa5755ec0771690828fb208eb4b72bcd63bc938ba8. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZK6F2294443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33f439f5419b6ee3f1e56632a69842218f18c33d0c9709d1eba89340702d831. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZK6F2294444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c515fbac9cbf4e588c95d2b35e59c697b92ed7e6d3347c0410d00b33c1fe5ac. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZK6F2554261.