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 0xa12b36a1ebc2f2b9fd3d374fd1d6425ded9002ff4a6c1ad588b723f5dadf9e5a. 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/e9e0a86f-78f7-4d1d-aafe-ab7488a38708.json and https://artists.proofprofile.net/proofs/artist/e9e0a86f-78f7-4d1d-aafe-ab7488a38708.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 0x4852d8654ec9641131394086b307b2aed945d8df7e8003c1609fd60628c4dafc. 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/FR2X41463077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8f1fcf5addde67b2854915994aa7cecdb0366dc2739e1faf75e3c0d1028afa. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR2X41463081.
Eşliğinde Şanlıurfa Sıra Geceleri, Vol. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0df7b5a0d7922932c8c86060b7f518b271561e52e4bf05faf855e03489ecfb6. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TR1250601086.
Zekeriya Ünlü Eşliğinde Şanlıurfa Sıra Geceleri, Vol. 11 (Kazancı Bedih Anısına)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9de679f0c2434a685dd86053d8ddaee19d697dc2a91212970b87501a874984. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TR1250801234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41070cfe5a25b66144c9f4f8310e796327693e1f8f34bc39db50c763326a561e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/TR1251301574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e80f7a651f9e2d6d30757261145052199f31ea2490efe8535fab692847572c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TR1251301569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41070cfe5a25b66144c9f4f8310e796327693e1f8f34bc39db50c763326a561e. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TR1251301574.
Zekeriya Ünlü ile Sıra Geceleri (Kınıfır Bedreng Olur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b1d519e2e89b6f5b0ac6c2fc8cf5b73f5f95c9e381d21b2ce1318dc7137ae2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TR2421600327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da5858eab30060bcfe1894d246695ca75679f5a9d9f1fd432c34a6823eeb41d. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/TR2421600328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5a71052f07f79066296ffe13e2d324f005d775d0ab24a7fe9054cb3548b44b. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/TRADP1900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec6d35a89cbbc14ce743e1ffce7f3cee71cba79d4f18a9652688443fead4d37. 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/FRX872289410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6658648d55fd8186156e903b9f42125d981a46cf51931e1d06318a7b2ad63ea4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TRCCK2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1570bf0384fc1fb87e911190f7a12341f6fa33e86534fa65ae0cbde32e20bb3. 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/TRCCK2300010.