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 0x99b8f47eb772d5c19b974e2204757e8afe6569429cdf533990f35ceab662f6d3. 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/cf3dfd64-314c-475f-9800-75e2fe6e00d0.json and https://artists.proofprofile.net/proofs/artist/cf3dfd64-314c-475f-9800-75e2fe6e00d0.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 0x5adee5792477a240bd067feda505d8b492571d696f703e971381d511627fff0c. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/TR0141925509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e157f16d588b008b25bc19b4c33e3c3d14ee04e61ede779b34d089a21874ada. 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/TR0141925512.
Sevdiğimi Biliyorsun (Düğününde Ağladım)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dcc47d7b725e3a59db3d219595a4f80397dadc8b63c7c35d9d2167c3107744. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:26:38Z), 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/TR0141925246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39427617b999185d1cb44df13514c52c6ec578baf1f4bea29e093bff2319f9ca. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/TR0141808012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869d96fa095909f98ee40ec49b8dd210c9b57072bce6b9843776a58f4c74cb47. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/TR0141808008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c14852fe4248b283c8d0211bc561dc4c169cf6c3170f7c299eab20272638e7b. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:32:53Z), 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/TR0141808010.
Ezanlar Bizim İçin (Elektro Bağlamalı / Ekolu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2644ba236dbe55d277218b77387f115e4cb44b1a14565207c32856fd03a57e5a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TR0141808027.
Sen Ellerin Oldun / Kara Yazmış Felek Yazımızı
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc95d5043bc809383f720763941a5f18957817105489f593e76fd7b9dd7b4b0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TR0141808028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0086831b6c8d1c14c7d73a1f51f79b09da9f80f4429589db179a5df53af55d9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TR0141808032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fde078fd328b812e5ae36560668f20048a5edc194516ae38eab3119fa6326dd. 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/TR0141808035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fba7325c30105bde0a22e706a49ad5fbd5150f58e3ff7432c00cc3a6726827. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TR0141808015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920546a6b47a4359494ccfe7dd9cb446b23be59ba486ed9b037ba2ab0f822764. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TR0141808016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45dcf73148b77fde03ef0a8d0601ba5780e0dce4852d6c248c9cbb10813b0e7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:49:34Z), 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/TR0141808017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafacebfa33de6db62fb1a370eb0d0f9073c3f7f172e63f841dd5a1c9aa5a3734. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TR0141808023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd158c0aa65d8cfc7e269ed22a78fb3543fb74adabec06aeb9f5a2bf18124aaa6. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:08:52Z), 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/TR0141808024.