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 0x69ba3a14eca1345edf986b717fb4463d5629d6be81726d3be9a06fda4b9205d4. 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/4d48dcea-d073-47ae-beb5-d3a0419a10e0.json and https://artists.proofprofile.net/proofs/artist/4d48dcea-d073-47ae-beb5-d3a0419a10e0.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 0xf13e312c6d6414666cc53a32872e2b0080f3dbf55fc5364b37b65ffbec518375. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/ES11D1800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bba482792257b541f1c9d72481332fd59cd07ff2582ea7d544e785bdf60a50. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/ES11D1800095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf40a01499ae7f273a84a0beadc6a7e2c2ef45c5d7714f3c2b21a88095350a3a. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ES11D1800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d5835bd165bc7e5beaeb667c5b7e9b06bf3db4c907fc40cde053011479ec4b. 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/ES11D1800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8798c07ebe8a2e1236a773f6cd3d121fbe1e4fd1bf85816152e4e22bce453a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T04:59:41Z), 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/ES11D1800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3503c42f6dddc4d02e8f5d140b86b1a4c533afd370a3c8a73b51cd18806ea373. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:24:03Z), 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/ES11D1900261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce45579e49894cf73c94ea70cf2daac4df2dd1944500cfdbaa21312e1989488. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ES11D1900268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd281e8c4c4513eb69ee68d6f9ce5ac138d30bee61de65a687b63b244ac6e4bdb. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ES11D1900270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2b807bb23800bbd457061e2c3d16a32ad0dcff58a0bc91554aef4bda401bb7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ESD112200765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68065eeea70be055ebb3f19d260ca5a6bc785230dfc4776444b8402fd02b12f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ESD112200766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeb027208346fe365627d790f16db67be0f8df64ea21e7b54fe6b01a05cce78. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/ESD112200767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e036868399474ed4d6b65ec436eefaccf53d88cdfb30c11b0f502ca8bf671b1. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/ES11D2200741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a6faae8396c8ba4179c3fbf64b176523a36ead7710b017ce83a7d78b6053f7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ESD112200768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a4a4814d9bd3a2a2c2c521e5b92b78c9014ddd73e4293e7227c4dd2fbd364f. 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/ES11D2200770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0976a0fa9bd23f55bb6f35b7e6b1fd759c2ad636afc75a8cd4c08f0380275bee. 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/ES5952006409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d630fd8ebd926b9f1a19c9c983fbf70614ccb328a875a5382ca681da45621a4. 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/ES6062067601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d630fd8ebd926b9f1a19c9c983fbf70614ccb328a875a5382ca681da45621a4. 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/ES6062067601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be7c111cc3cdf50f88e221baae33ed84d1ce5e9dbc7841fea4f20e89a108a8d. 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/ES17D2000979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3f02ccdff0aa55781679126811b5e3aad4d3625421b663aa0524956fffb44c. 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/RUA1H1800321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32d6f8a1a6c0b6a74a92c4b260f03181fb812838cf47d2bed809f00154bddde. 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/ES51G1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32d6f8a1a6c0b6a74a92c4b260f03181fb812838cf47d2bed809f00154bddde. 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/ES51G1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f684a1e6ebea89ba06eaf8c84c92912003f7bbce1d04c702c9117c9bb007bd. 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/ES11D1900236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fa80c1c12633df18c5a4885691ba24b703a3f321cac65c71478a4ec745989f. 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/ES6101901513.
Cap Nen Sense Joguina (La Nit de Reis Farem Realitat Milers de Somnis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a68bf011fdd9a01f443c0c6b3fb843eb5264a2d971c8100c3be79dc211210c. 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/ES17D1800597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b2c1447d7d9e1f3759312dea528fc8027e770493c3e919879d374f2ab81b0f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMEU32024526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1357f1060d43781afab17bcbf9e9ab566c2de7f2e0de09d4b491293991308f4f. 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/ESA011925977.
We Love Music (feat. Ainyan, INORAN, Ken, J, Suu, TOMOMI, HAMA OKAMOTO, HARUNA, Michiya Haruhata, Hino Jino Kenji, MAMI, MIYAVI, Yamauchi Souichiro & Rei)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12caf4853330ba012ad5ecdcb7bcf70d467a7139a5a1933539bb4955d7c3eaed. 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/TCJPQ2127121.
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