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 0x8cf7d3efd75cd26c95583eb4102cc48367f1b7f17b16bf7fccee8e5ace9d4560. 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/44967b01-ff56-49b7-b6e8-906333e79d96.json and https://artists.proofprofile.net/proofs/artist/44967b01-ff56-49b7-b6e8-906333e79d96.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 0xfff3487f7cacbc89b92a61e196bd50de11cc92ff9751ad0dd9db109be0b9e6f5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TRA162200589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7471aa525459dd936c352f4841f7f11e925e868be5846f9c98728197410a3ce4. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TRA162200712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a40bcbefe3c705ca7a40fc6a75ff8e8eaf16e81f9c414bf66f7bbd9306bd72. 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/TRZ351902275.
Sen Mevsimler Gibisin (Selami Şahin Şarkıları 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dfea745318111d2f2f4a5fc2fe243891de65c87f5286d84cca28fc22155584. 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/TR0280601045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61b4402615883df061f26f66534ea90e93e9a7aed5ad59b9ef8e516fd1ddbcc. 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/TR0281505357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de1411d1fe612c44b9d7f4c071a79c5b65d01d138630b82b1994a05ac957a31. 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/TR8471700040.
Bülent Ortaçgil için Söylenmiş Bülent Ortaçgil Şarkıları, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758e971817da74ec3c3744c66da08c79d3470f73b9d359bd909ca4b098c56f08. 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/TR0280602132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5641e914e76645d3839038c5f23ab906bbaea41ba70591ebdfe68d54f91d5bc. 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/TR0281605525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fc1a158893eaf546728373a7cc3bd29d8b580fe9819c6eb4412f5805ec091d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR0281605526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a16f6c6f398e567c8e6a9240813f89a1b925f1d5281d6dac006df892bb22713. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR0281705704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67160b322faf03574ca0160536eec023b793b6386fee13079be1551a54a519ca. 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/TR0281705705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef25e09c9dcffb2603437158d4642218993a249fca3307d2bc4baa5e790ac08a. 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/TR0281705711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de1411d1fe612c44b9d7f4c071a79c5b65d01d138630b82b1994a05ac957a31. 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/TR8471700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5102f032b2524cb6c5647216b3f71d3e6fb1bf107e041461c2824779c3f07672. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/TR0330907053.
Metin Altıok Şiirlerinden Şarkılar (Ankâ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6c5dcb9ecf0f482e06d41a7cd0ef8a5d852a0bb9a942148bb0ba9885ca4acc. 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/TR1591402414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d7d5cbf3bc9a4eb9608a2d138e816bdc4c271171c88dcab0f68eadb7f9e8a9. 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/TR0281906177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1f87b21ddcc792df17d89f367dfb7dfe88178f6c78f18be9d78ade98f35e12. 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/QZANL1736191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceb134af9f8adcce30433d90ecde791dff270cc7e292d0b9eb4f19813a8c3b1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TRA162400684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b54274d6e2b392c9d1b9b1001f7a69b421ad6669fadbf2912ffa82207096b5f. 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/TR4152500003.
Babylon Bar, Vol. 2 (compiled & mixed by Gülbahar Kültür)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc30c84b539d2adabca0ffebf98a0eeb63729637e8a7477c5512d0a9982c8588. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEU231504819.
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 0x75b2e7cb1bfa9a56463d5de6fa0a0aa83e6e088593d419b69dd92ebc551ab1d0. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TR0330907047.