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 0xe14c13a4a3f48fc4c9e43c7e2ec369953f56f10531f8f5ddfbf4be338d73d356. 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/eaeb03ca-f20c-409d-a151-51ee980f2689.json and https://artists.proofprofile.net/proofs/artist/eaeb03ca-f20c-409d-a151-51ee980f2689.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 0xbfde0ede1f49d46647bfe3a6e7500862e6e086e75117d82f81639b5c730864e3. 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/ESA011810481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20ba0908efd7057551873b9725ca28698644cd40920f51e23af2e00816c9748. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/ESA011801411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6e5ab12432547dbf62c61c1a66bdb9b88b4766451136326ace3eabc4fa3407. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA71941398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa657ab9d315eeeede03d0aaac2dd43e503dd99740a5f9d14ff2a9f72ca04ffca. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZDA71941400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528668a962a1deebcc2cdfce3fa4e709c8d03a11419d2da00360eb9101fb97e9. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZDA71941396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6379f0ce8781697f0ec614743473bd8d94cefb6a4bb5f6f32540ce02c630a6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZDA71941399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1716261d0c5d7792921333c0589b4afb9007158b2ec457c6c8cdbbcae20a7a3b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ES71G2003528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c0b5a5352b60ce199aa243ce649c727fccac5f21ab1ea7f8acc06c569d2a8f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/ES71G2010449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a12ef47f75522bbc3d9cc827b29d1da9211de3849e033e26dbc63a6f89b6df. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ES71G2011330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba7bb62ce9d21bd13a1581bc5d32af24830bfde2a0a1fa493e7a1d95bdfd700. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/ES71G1948167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560e5972c1df77a5b5000d496014b825b59a3e9a2bb8448181b4973f17ffbb20. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ES71G2011329.
El Cole No Es para Siempre - Amoroux Remezcla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb793cce4b7e4bb7ec5cafa5ad9ab14306a30aa1980b7d1b1f101bbdd8e3b9159. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES71G2044164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd60416ce33e19ca389585d85c18192e629b62596d7db19292649be68a15d93. 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/ES71G2044655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3715a08f49418ce9d48932ccf7cba849f7e095e9063e5cd5169062d051042bae. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ES71G2055293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93324f59a96ce7d9136fceff9d79016038a128699a9a30c9fef804505d766a9d. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/ES71G2217494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a621c2358de91920af89bdac102c378294ee187bafb353ac8d74078c8ee2678. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/ES71G2229949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2876e09a9dc6e3e4ed4f92bf0399b019af762f4f2aab7d6649d9013adb54fea3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/ES71G2312256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4d4aad23ba2f21db83068a7e73f3cef3f3652baac7ddc3a41cfb34e5d94382. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES71G2317115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e897cfb9ac6d862adc0191f04a2b39a859b11c97716539a8381adb0249cb3e1. 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/ES71G2328604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4d4aad23ba2f21db83068a7e73f3cef3f3652baac7ddc3a41cfb34e5d94382. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ES71G2317115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4cb9c6e532cca35df8a2400cb9ca7f40c54b0fb49b9036459e004e5d14c40a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ES71G2329532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee0f577a77500d969fcd20f9f1a325b0e4325f00afac4281db5783663d874d7. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ES71G2329529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b3f738681ceec3a9fc508e43e7a08dbea6399bd4c5573ed5214ae23bf9a571. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/ES71G2317116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a5b6d9851b178f2d58b64bb8f13295c0c1b14bcc9fd7ea272291074989a77f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/ES71G2406196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3212cbc9eac75964c9e442a7b4b9edf8e0723c4fef984c81fd044e1ec9297c9d. 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/ES71G2407659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9ffe4f7481642962ecffccd68f42f47a6d239d10151956728406d26f0ea66a. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/ES71G2404286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54643c88c3dda24f758daffda5c93262eda1bbf21425c0a79e4c6ad39575ca75. 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/BK4DA2426168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab293a4bbb54bbe1ea74e2fb6eeaaf0e5dc8eb32752d79f32ca3a7405fe0801. 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/ESUM72302438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c140b912975f2def5bfffe135d581acb19a363e0902a2ae35176564e23e7b5. 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/BK4DA2315185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b41339c0f26398c61baa32e75e996b9c55b1216208a8710ef061fdfdefac46. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZTAX2200496.
Mama, avui tampoc dormo a casa - Hadren Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae88137b4b4208936d3a62709944c1f189d11f206834c17510771972b1d22d53. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/ES71G2314613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892a5220fc42c362985647da09c5ad14b453d3a795c17eeb123e490a15d3a0a9. 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/UKF342100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315507d63ec5648612fe6f30d666444b3ac382825411460bbc6a3f4e57e80eb7. 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/ES6061960701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315507d63ec5648612fe6f30d666444b3ac382825411460bbc6a3f4e57e80eb7. 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/ES6061960701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e938c0f81e95b96e4e405ca62b874dfca75cb2ccf58059cc64e218e3d28b963. 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/ES5022000575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584874f3bd708fa01c21b72260d843e5ee12f0cd9a07ee0428bfdecddd3f7d3e. 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/QM6MZ2199544.