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 0xab5c1772402f8f17748b16b9ea39b84353e1010abf6ce7a84b28f65c9568f27e. 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/19bedefb-d55f-462f-b879-43467f8f8506.json and https://artists.proofprofile.net/proofs/artist/19bedefb-d55f-462f-b879-43467f8f8506.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 0x72d48d1fbccd4d166d90ddab4bcda43d80f271fc792b29685a94c53f9bb23e94. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QZNWV2153689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe801ee655ee7701fcdb85ec6839b294ca248fb1b0cbdb8e0f594ccd46d8f0aa8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTAT2278070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ff09180518426a2f0818c8dc2b9c8e14b776026a8a0e16752abcfffdc4c1d2. 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/QZTB62265389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131c26af38cc556fb181b0300cf3b55c379410bff486df7ca5390621a8ed2dc3. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZTAU2333510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f847569e389bc9fcebf639ef83add411fd04c6eceb605f91aaa5998e4da73a. 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/QZTB92324308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f847569e389bc9fcebf639ef83add411fd04c6eceb605f91aaa5998e4da73a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTB92324308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d34816cf1386cdde3dbae60caa5bb344f19f861e80a0c531f8549a8b10b2e4. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/QZTB92324309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf990f3d38c208a86d62692d5db1d6d64759a562e1983314f4cd4894ec83dee4b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZTB92324310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5088b36399e80f8cc1dd1050c219a71f3afc951f4984267ed49de6c8d289831e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZTB92324311.
Drowning In An Empty Sea - Casket Cassette Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3dde3f72cdaba17d301c93ade4974956f46e43c91c73a90388d3a618574829. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/QZMEQ2472354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc713f4f30fdbd189945eb5942ed5783dcab96c64c4d914bacd7185ceb8caa1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZNWQ2377221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633be348a33e29a35a0d77056d7af0087563d8f616f63dfccccad1d4c66d2d53. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZTBD2473139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633be348a33e29a35a0d77056d7af0087563d8f616f63dfccccad1d4c66d2d53. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZTBD2473139.
All We Are (Are Memories) - Give My Remains To Broadway Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453f350fa5cec00b627b180b6af46d1ac538ed228a47cfc22931c418fea8ff3c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/QZWV32540395.