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 0xabf02f7b0c04e53ba6db8e8d4ef128ce354a1e01f2931716b0489cbf15e465a7. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbf4a233-7c35-41c2-8960-98926eae38f6.json and https://artists.proofprofile.net/proofs/artist/bbf4a233-7c35-41c2-8960-98926eae38f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
VOCAMIX 39's (Mixed by shirayuki - DJ Mix)
hyper reality show (feat. HATSUNE MIKU) - Mixed
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 0x123611caf897a0b4eef48835c6025ba7b5dd355edc20f8b2ce16c705a4283531. 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/JPS532400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c4e7194605f6581ff4089b7ac2cfa75fc3f4964ee6955d77b273ee4c4155a1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPS532400015.
What's up? Pop! (feat. HATSUNE MIKU) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8cad30336b5fa6879ac23336e1b4433599e8bfbd3d7edf95319b8242cd46cf. 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/JPS532400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1751e79f2628a4871d8de19118d0610fb09bd8d5c9a2b006ced75884a40b151e. 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/JPS532400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fe975d1a62587766bc0405699f5ef576d8699fb21b1fa5020fb6fdfb287c38. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPS532400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abc9de08c612e6c0b5fa7889f468f09afce18bcfb4aa89017a7246dea8c2b05. 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/JPS532400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21e5e1eeadae13577725d88971c6817993c89122620b73446e66f8d28714963. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS532400031.
TEIKOKU SHOUJO (feat. HATSUNE MIKU) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e40deecb79ffdbcb19e90cc4b5538d02e3b437920668464ceee50ad733e997. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPS532400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19616a3de446470e8881e2b59870140377180b5aa6bd2184325e95eea41e95a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPS532400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de02aa01d2bb5eb04de60df481d645de95b2555c071a112ba6d6f5cf0d79b49. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPS532400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31a7def2c8715e628e6ab1eecfd42c774e4fca4a664e4a65b1d8446d02c1f28. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPS532400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e85a3ef1f28b3c1dbbc5b8c3726f20b40d2a45246831f52e02f49cd963c6e3. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/JPS532400047.
NETOGE HAIJIN SHUPUREHIKOORU (feat. HATSUNE MIKU) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855e921698189be23ed7ad219773043d33f41229500ca1b95206da9a8e684cea. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPS532400048.
twintale wonderland - Remix Ver. - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f47a4e85c241610f147fa6d2b3d5a3d4be68a2ee358b966b92031f54f8ae6b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPS532400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd050d79a6e4d61b4e8e3b5f2191f56ccf83d251e961def1291c100a84c4bf1. 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/JPS532400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f861eac436d1db9dd77ad95bd65fd02e864219047f520e0f57f8263d4f9191. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPB2411473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3011a95fc8a9d51cc89ba8493c50afd5ad2c3bd260b3745808f13ad26b40f9d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPZ2411311.