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 0x1822587250ab6d954055cac41a984db57b874a10ab763535107acbb0a1581668. Chain 2 (Bitcoin): anchored in block 953857 (2026-06-15T23:34:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0248a9a8-c35a-46c7-9d11-63e6e9b23ab7.json and https://artists.proofprofile.net/proofs/artist/0248a9a8-c35a-46c7-9d11-63e6e9b23ab7.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 0xe8ceda57c31b4c7d02e7821f9e05a69ba7cab1fa2acbd14a50c2d79fcd92d425. 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/DEUS72100050.
Paradise (feat. Toni Fox) [Remixes] [Remix Edition]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e11fcbcffc32890089c2274d064225281a104f796f15ae5846dabe12fbfe179. 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/DEUS71700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8fa17726932a728fe928bc267a210c0ef736644b8a896998b92b814f3bf09b. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DEUS71700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543ac34b1e05cb9adea666d059d90c9aa18c9e95d153cf0faee92f6b1bbd5e33. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEUS71600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196c18d6648ae367dd7ed1e6ccd61dea455ec6ba75a5924776ca4a88df813d1a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEUS71600051.
Hello Happiness - Cueboy & Tribune Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edb82ea79a6004618074e2864545168cde0bb5f9ddeb40a8dce5ffea9d9ed28. 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/DENJ71500242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2ab3a27db51e7530248e3fb3a863b35dfb7c100322cdbdd22032135a1bb978. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEUS71600003.
Hello Happiness - Cueboy & Tribune Remix Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab9c5c7d1f4fbb5fa9e267ddabee9b444d2f9c4302d6a541a8e01f1b028a921. 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/DENJ71500246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6d1f39e00bba79af0e2a6367cecae359c0650e32c92d77ffa8af8539b000cb. 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/QZK6J2485804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262ff66692b46960cdc4caddb79880a64e8fd7bb0d917d8de0d0d7e09054f238. 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/DEML72300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2d0c7a3294d9812308f8d31c0105665d5d516805766b78596776dc09c08cf0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEML72300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac385bf8ba0777b40cd47b7c82c3b65f7152b54ba2025aaf46a0cf659d0f12ff. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEML72300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa275145f54917e3fa33f6a6273e441cf9073042e09cc3e29c5413e2835f34957. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEML72300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f0b8da28d398e016251aaf4fc93af63fbf3c3e548636e88045dc57a6f0b5ea. 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/DEML72200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23601906d07bdf4fe9ed96e95b5eab8b6ee88627248717940ff6a7081de4b39. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/DEML72100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1b766507d66c09e72fad85fd8b9e6ecc5f077588e3e4e583a743b8228daba1. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DEML71900072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f22fa2c42418cb08cce5e5928a03a581fea609ac90973b4c2d0fdc4d7c2889. 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/DEML71900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790589f04479b8301ed2b5719d4efcdd5c43ca78ec91129c1c21d0fd86c376df. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEML71800011.