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 0xe0708e9ccae8a1e05b48f89190cb2b97e5ab95013ec08f38408a0e3d8183bbb4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4be01c79-c24f-4185-b6f3-d2d2b4f6189f.json and https://artists.proofprofile.net/proofs/artist/4be01c79-c24f-4185-b6f3-d2d2b4f6189f.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 0x9ccc7557234b72f99c3e8010596b53dfc931bdcf88faf1f2913063573b7ad18a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:54:54Z), 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/QZMEN2064219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e6dd1d4d36204f85ba5d9516350098603ca7bbaa33a0f7a400dc9542210002. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TR0012100360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374d95c05331c36a64edd8072a4249ba0c0cd8d2ee82e81ad4848053e6cdeba9. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:27:14Z), 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/QZZ7Q2410952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ab27a675cfc0809fc4745a9cdf80da05f15ea1a00ee48631592e304c51941e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6P2556938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adad58f31eb089dea24b277f482c2aa0457fe0e840b4ac651115203a9e020a9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT3F92509612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88aca092ff0b33b894111f5886a8d94c991a9367c8e6f09317b3320612180186. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UST8K1654616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebde16a79dbb0ebc6bdbb0473b256370e57b4211cf55457ca72e470f3607182. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UST8K1654636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8072bcb02ecd993340caaf58ea878885d56e0ab12bb2108872f1f87d68b41de0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USCGJ1979337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc567033cd01cb77d0ef088427185424b0465325ab561884bb33ec244c1792f0f. 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/QM4DW1752368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3509c83fa04f8374e89f859acb7ffda881f10db8c5a34e891ead03b347b27a97. 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/TR0061800420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10b2217a5ad39e3e848d6572fae98dcd3ae82c36c960434b1b3aa9ce9f6e5b7. 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/QZBRF1885403.
Tuzak (feat. Leşker Asakir, Hasip Aksu & Lider)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf634cc76ed2d2beca184deb234066dfd1d906d96f4f145c436de48a62efe90e5. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QM4DW1752371.
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
Ayaz ve Çöl (feat. Lider & Necip Mahfuz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54482c1188a082c2b98baca2ba65b990c06fd849fcf78f7116dda0caf282e865. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QM4DW1752373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ebd956390e0faacf375919daf84a25f179f5bf11f97be4af0ae35fa67f2291. 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/QM4DW1752379.