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 0x463d1da9facf73d97dc308412c19be37e309729d4f7269b47cfa93698ef8080c. 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/d17be2e4-e67a-46ad-b6f7-ba4987c59710.json and https://artists.proofprofile.net/proofs/artist/d17be2e4-e67a-46ad-b6f7-ba4987c59710.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 0x8f2de7aa7a4c8d9868e19ea4c45ae0afadf08fb014d42734aaad48096d816404. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:40:43Z), 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/FI3JR1000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47439b66f9228403224cb32810ff3bd5540445e32e56f03ee65e099605a3a633. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:10:34Z), 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/FIMRR1300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac089526efde0d0dca4519812169e38a250c2a35d703a04fdd143deb7e00daf4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FIMRR1300256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6643816d903fe63a7f4972149699b374f4d6ffe7c7112a9a78013ac2c1a060d. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/FIMRR1300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84d3ff9c2d11347c611be1242f1821b39cc75104dcb6c5c4cbc2292242d35f3. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FIMRR1300260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa19adbedd0b57968c43c12aa121215a3bffe044c156c8fa18b15c8142376ea. 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/FIMRR1700028.
Keyser Soze (feat. Huutava Vääryys & Rekami)
Ois pitäny (feat. OG Ikonen & Leo Luxxxus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b25f14946e4749c4581d886a2d9813318a179c84d892d59390ea5900d7a0f2. 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/FI4RD2100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b25f14946e4749c4581d886a2d9813318a179c84d892d59390ea5900d7a0f2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FI4RD2100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccc85413f71b458f091c8334451d23001da58713289eca1012740b71df712f4. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/FI4RD2300161.