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 0xf8291facfe55beab21ab1df07af30fa9cc0492788247581d8f122bab62425696. 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/44e6b9ad-5253-4a4a-b4f3-13a46e378018.json and https://artists.proofprofile.net/proofs/artist/44e6b9ad-5253-4a4a-b4f3-13a46e378018.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 0x2a15dc15363013c0b73fabfdb569bfa5def1f1aa807c244254c64529661cc89e. 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/TR0331209116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c53899c7da5367fddba4a4c17def361327e27cb6c9bceea97a930d2102eeb7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TR0331209117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52172a49dc13bdb4dd3096707a9232c914e7785c9c2baac6cd031e63f2bd339. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TR0331209118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ad136bb49912e8fde7d28bedc373392a5eb44432a46cae16bf4e8e2aecabb6. 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/TR0331209119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe698b26636314b6a20c482d4ef76d122484047b6dd5e08e2b4a5b0558930b683. 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/TR0331209120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440cb020258a1d6b67d438187215419c263cacc31840c80f858d0e80c265d811. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TR0331209121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8838b1d53b42fe4a167dea1978c36e8c9ce2963b7503402ee551e6f74c1fc555. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TR0331209122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1100ac1998056aa9f7a0718815f0d516afe84ffda3d874c41d056a9bcbd70cfb. 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/TR0331209123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218512a263ac5a5b84f85c667f9ca2c6ad09742f55b65c9693f4a8f2f81a8b87. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TR0331209124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a976d7db92db07873767a66945159c2f81d3fb42c0411a8f6ce6d414d593dd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TR0331209125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4627cf2a780f5a26bcdd7414e2cf1100bf6739392f25c7241d700ad0ed76cc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TR0331209126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3042fe077cd2832478ec062d164bd18008b1f0d55f060b2c50a2813ff2a3d909. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/TR0331209127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8e54b703b1bd4bb03efd2152d95cf63a1a74b91ee9f0113120be38815daa14. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TR0331409884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15d336d84576b6cc7b0c63a0f0c19ec93149bf01010268715cf158f3519091d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TR0331209071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25203a6d595ee954b90c4f2bf39bac47f6b832b1b179e2ff12165ae0a0b361d0. 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/TR0330604807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb8702e973e9149dab7f71426afd8a63c50808980ac7d787e1f2ef77a438a2d. 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/TR0331209072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa708f43bc0848bee12ca57e727df56a4ade053794419e186be9c8ff65ce24bf5. 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/TR0331209077.
Haydar-ı Kerrar Aşkına (Feyzullah Çınar Eserleri 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7165ad51f2c497290b4324be36945da8dd44047e5cfdd63296c527c4bc5182b7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TR0332400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70924f74bb25761a6280197c19491ee3276298e44e91740702c648d1c9b78f4e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TR0330604811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20561862d1d668e7231e0a7e44e18e96b5178f439a1eaf4d9193404c5df8a346. 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/TR0330604819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93759910ffc4347095b129384a56ba1557f557b20202922f350e43d186c0e0fa. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TR0331209074.