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 0x8a070da4b6f3bf23cf8a07606076bea997a01239e800c1553bba8e62699df073. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/016181fb-da6a-42ea-87ae-270dcd0ce3b4.json and https://artists.proofprofile.net/proofs/artist/016181fb-da6a-42ea-87ae-270dcd0ce3b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x65eccb36a2f143a892e371caf66a0c7b7b4fd2aff099d775bdcfd808860ea897. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TWP011737102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca8d1a322838e9c52bfb9a43af065e160593ad906d031c3a10a5c5d3d6a5895. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TWP011937101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c041e064941986eed053919250e4cb0ef00ce8c8a6af1b72f5008ad5468fe5. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/TWP011937102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5501d2365baedba0b40498adaf330c652c8f6618f031f58c84869d1c833002da. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TWP011937103.
Dragged deeper with every gasping breath
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fa24fc456f3452e328abdb31788afabd3dce62ed35b8b56bce5c39a0230b9c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TWP011937104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05b250e848fc5f92990c8f4fe2b19a653faacfc7f87cefb89a5f18b3ca1a783. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TWP011937105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9aaee396bd4ce513554f9fc21e504a35a0c042750eb5234bd5085c07108a9c. 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/TWP011937106.
Knowing the sadness better, hiding them deeper
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94885d27151084c8bf20c0e4c16f216435b0b86c0fb9aa2c6c168ebc7bf91630. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TWP012037102.
Rain Drops on the Shadow Reflect the Hate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228c1350ad85c9da126256a1a8eb9e1692de1f3bfddd222e445b0caf1ba4fc71. 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/TWAE32103666.
The Chains of Time Burn but won’t Fade Away
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085e5c00fc9a55d7e5c173a27fd8cb3ab62a80a47c53d64375f93bc68c1b2e5d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TWAE32103667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546bb351161ddd6f6024a86f3feab0b0a948117c44188bf93091771615a15a98. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:43:35Z), 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/TWAE32103668.
Smashing the wall of an endless maze｜預算限場 (Live Performance)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd399890b435b4883d7828b14cb7e7a96e3136b519901c3922804528d487f05c3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TWAE32403350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535a97e7e736da64ca86e386f867cd64a02010875e54b1730ebeb30ed3257e96. 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/TWAE32403351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e71a962b70cf2800a6f125eb0bfa8aca1f739fbcf7282676899a3c880f8d93. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TWAE32403352.
Touching the Reality Buried in the Forest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7247b73b2c6530ee7c97262acd1a2626e1be80838cbd03602d578ee65a78f44e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TWAE32403353.