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 0x769c5178b57e1341d5a2ad4e577172268ff75cf299c1c202ccebe7234d048e1e. 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/01d0956f-7773-45e4-9b9b-fefabfaa0197.json and https://artists.proofprofile.net/proofs/artist/01d0956f-7773-45e4-9b9b-fefabfaa0197.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 0x91e76563ecef1e87f8315303cfcdb8d306932b753be19b6db4c330972ca13c16. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TR1290600632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8889458fb63f50dd2129786fa234eab0a781f0ea518f6899d1fba05c2a86844. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TR1290600397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38d054cd55e0a99cec69bc63bd42b40fcf41224453f9f7f89cdb6951546ca8a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:03:37Z), 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/DEVU91701164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642242421afffa0f3850b153b1bc95b596444b8bc40892f1e5b694b174932959. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TR3310600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5129e6230c008a2953adf5da1c68871f46833e7d01c0da395d1d314f3e04e5. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FR6V82520981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7c4535c0ab8b162b64db1fae9ee898fe92be44d42f5f6788b5ea9b88b94ab3. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FR6V82547132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0d4b171e38c8a338cb33c00c1d76e438e5a1926a6f61312855347d08f12799. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:19:44Z), 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/FR6V82547136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178bda0b007a2f2713761bb03849110b037cef58c76dd548b6d3698c0b96d0ca. 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/TR0431602943.
Hüsamettin Elçi Şarkıları İle Ayhan Aşan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cf3875eafd8313d678f348ec10b54a13075396b737b85f4b865d5d59ad4a72. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/TRBFC1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95f4aa2a51e7b1ab99d5bf986e22a8bf7f9678b934eb1026833041ae7fa4374. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TR0012200338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c1fe4dc453fe9937c8d59893b0d25a1eb30b1592b5bf0a3a34f04dc32b35bd. 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/TR0061100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd76f9c97ee5f461c8cf41fc28da9b55204e95a05b7b3ebb0a1c8c52abc0c044. 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/TR0061100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca7b5c53bf12580920756b73c1254f5fd98883b1a4e5f76853d2a81c5915ed8. 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/TR0061100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac7e1563df8d34b00e9805ff037d790e2ae03a0d75c9f97ea25b396ceee069f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:29:07Z), 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/TR0061100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ded2f31c57978cfd01aed31f74db1f37c7aef2140a9b9145999f21d3bf8fcdc. 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/TR0061100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01acc3ae4dd58e920e45b8d74a50225adcd439a86262c44513fc4606c5612ce9. 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/TR0061100061.