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 0xfc7d17395d8200b56b8a1cba39083a511c0374fb3bf9d213d450278bf37f17ed. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4846629-5393-4587-87a4-d61748a34f59.json and https://artists.proofprofile.net/proofs/artist/c4846629-5393-4587-87a4-d61748a34f59.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
DDLC Purist Mod (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 0xb301af08ef0e72e90b714cee541ad84464d12e4897e9ac32e4256379b5005fe8. 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/GBKPL1957151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe71fd1e657fdc77b2a695f2db642aa9ac10eee6f8658a349e6e37e7d77f2d4. 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/GBKPL1957152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6690a5a52d060c7e293aa311a9aec6dad84d1781b11b79717a68ce7e6c1e880. 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/GBKPL1957153.
Rainclouds and Sunshine (Sayori's Theme)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a80caa6bbdcee83e0ec88286487624c89567edbe52ff5f83ade8e05cb4b54e5. 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/GBKPL1957154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3ef7d27a82d463a7a3a8e8d046388ade18a71a889402d613e947dcb30031bd. 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/GBKPL1957155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad92569f65f1c6f2b4804d5259bcef6df027375ab5e9b40aa6701fa15641f49. 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/GBKPL1957156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd986945fe485256d95b45e88ccc489f6d464e2121e602846fa4f0f29d63325be. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKPL1957158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e5761a416e261bac6b7f23c808a9530bf3659806f60b2f3497c79343c9ebc3. 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/GBKPL1957162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fa07034c72a5f7b3a8fd186eb6fe64e7caab7d3e5109657a6ab8854c99356b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBKPL1957164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bd9d9a90fa4256899b9bfb57e03c3c53cae84849c2711fd20f57435c23b612. 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/GBKPL1957168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ec68a13c981d9463144049667240d2355ae0fbecd6f4016bd8bfe178718e2d. 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/GBKPL1957169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9298c56be49eb952525b4afe5e12cea38b51485af32bd902925a474f546f5ae. 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/GBKPL1957170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c14a02c26b90a472d2b8cd7b1ba00eecd5c94d3f0b93d50ac93a4e32cd966c2. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/GBKPL1957160.
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 0x5d3ddc0639179e372f6c9d1f7c1b9f8e69110cda15314a6465c3ced951fa5773. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:39Z), 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/GBKPL1957163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65470e6971f7b59c4062e0b57bb21c1f5e63c94af6716aaff669ee916cff19d2. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:28:33Z), 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/GBKPL1957165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3a81bdda548c0462de21794ebe73ceb402e463fb31c1e58b61daa29c381067. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBKPL1957157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3baf61265aca2118f574a799942b5c11e31a920b340be65dc9821b831aa5df. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/GBKPL1957159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aa304fdc5b5ae95776c888dd50eac64976dcec346578c60092c4cb658d652a. 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/GBKPL1957161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454a9ec96dea75d871b597927125ecbfae5829bea9f1421222525bd547962b5c. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GBKPL1957166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77eaa8e6e2caa564edac4d345c83185c448dabaf031e6e152e81d7cda3dd71d3. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKPL1957167.