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 0x978fc9e88c8a2d7bf65c84da165eca0bdf6aadace613e56d2d3521a649f6a162. 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/1dc1fb2b-a789-4d1d-8fa1-7567e01801b7.json and https://artists.proofprofile.net/proofs/artist/1dc1fb2b-a789-4d1d-8fa1-7567e01801b7.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 0xeab1b06c63fb08bd220d59c53a5af2b1d0088f683e0ec3a3e611d85d20a88fe6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TR0330640262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959e9be206eadee3051a65bbf7097430571b4e35e26f5061da16971378791dc0. 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/TRAPP1400062.
İncecikten Bir Kar Yağar Tozar Elif Elif Diye
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c96bed9582b2c6aef03ca2e1834f386808c61169fe2a0daa96bdea17bd378f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TRAPP1400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ce7bb97752aacc90aa4202b8b97894f1f9e1e7c6a50dc48e0ed35d83423238. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TR0951500282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b85fa96d8aaa7b5deca7569c7e5bb6ac9bb54b8b1b14610c9171eff49cfa850. 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/TR0951500283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d40b76b2a2ec6af26b08074f4edd0952e8f265e640706c5a1ecaed0a298508. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/TR0951500286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5bc1ffaeeaef2604500735c9ab54371b633a34ff105fd5831fc19452aba1ad. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TR4900900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b6a336e3f0008a2001801aba0508e3800092b6c279008efb74f46fff05a413. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TR4900700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4255ebf36f233e5e10a75f3c4eaddef140cfdd51482a7ed785c1bd2dd123036. 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/TR4900700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2cc5bc58881070e13c54108feafe399b63de0ec54cda01aca3d1b271819cb5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TR0282006291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc5af0a5fdda37e029e94af971c80ba9429bc41636f7e4814ccf01ad08c6183. 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/TR0330640322.
Küçüksu’da Gördüm Seni (Şehnaz Bûselik Şarkı)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e59e5a4e962d584fa022181f3767378a16dd76e977b72b6a8a6a118d9b43b6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TR0381506763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49f2aaa0232e123740e9ee958ee00516d90b7a68af215488a99bec90a7476c8. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/TR0381506769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739b272b1770529a44342e6e0baf52693da66827303d308d61f67685b6b83f28. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TR0381506772.
Gurûb Etti Güneş Dünyâ Karardı (Kürdilihicazkâr Şarkı)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca9ed4804495ff953780522aad5a993621d78a239764753deb26cb92e3480e2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TR0381506778.