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 0x2df4207d34a512c1ecd9acee0a8d8cd6ed8a9938c440b8a6fcbcb88d76a30a5c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf592836-0b1b-44ff-8336-2a41f81ea782.json and https://artists.proofprofile.net/proofs/artist/bf592836-0b1b-44ff-8336-2a41f81ea782.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 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 0xcb21d2682b6812561c97c0eb4b92edcbd35c03ebf0e48497fe3e30c5765b689d. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZDA52220453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff69f1291de6608c51edbf25079d60e3b972c3d220df4947fcb6030092925dc5. 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/QZHNA2250278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a6886a666dd2e0ac474567fe527fb4db02a35ee8b223fdf7b83f20aaa3c30a. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZHN92283454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75865ce699065c90700b3087ab7f32816c32fa4a599ac7e4bf25f272aee8a233. 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/QZNWZ2201450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3414e1e7ef3bc112b29fd573a54f2e4c1f7b21eb2bb37f348efc815faa7eb02a. 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/QZTBA2259974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd9acecf41534c3c81d0c2b9faf9b5b307a04481ae31f2293058a864ce792d3. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZTBA2259975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac3d3565dff60b75e603d1fdb5f99af787ad6c3510f2abed032a6f2f533adfb. 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/QZTBA2259981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c2d65c5c1eac9e38b1e5e207e0e7bfaecd11bd4d9319b8e1ed247217a692b4. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZK6K2300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b9a11a90c258999f1e1a2a3b1e5942f3895d9ea51954c393b5f1bd5dea1e18. 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/QZK6K2300542.
i close my eyes, but i can still see their broken faces
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35b873985eeba362ac2d67e740bbdb0f3d1fe5c6f4a80e46696342564132a7f. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QZK6K2300548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7dab6b442e7ebc4389cbb4d171d8cc9350f1f6246948689b6d7491c3757a62. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWS2315863.
an angel above the ugly, mutilated corpses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45997b0824b9309514f290af59f39e5992612bdba3fcb025522233e81f33824. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZWFH2377447.
Sampha (Dancing Circles) [mindvacy remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6606f8a9cf875d16110c853a2794fad06102640d18b4e54397bed5beb5ad593c. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/QZK6J2422864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcca2f8bd886aa717317888f0ecb8b58e83fcaf5e1626338d59933a4a6016355. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QT3EY2464991.