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 0x7d60c39ee384d796bc2883a50e2cf7b2479b5da57ec86a75ca2e2a8da99582c0. 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/4c84b9cd-babd-4b95-9a86-cdad1d05b84a.json and https://artists.proofprofile.net/proofs/artist/4c84b9cd-babd-4b95-9a86-cdad1d05b84a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Da Bomb (Roots of Reggaeton) [Super Mega Mix Hits]
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 0x8dac35541b0924a7e7b6d83bc9dac4beb3214ecf4ea58d13abf83be31522015a. 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/USHM81484943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dc1dbe2886151c45abeb65a2125d356f5eb21293b2fba04f7ec80bb24c0da3. 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/ESA011988663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3c7dda5e1b2a8f537bbebe24128b867c8b46633ffa393a9e777e640181995d. Chain 2 (Bitcoin): anchored in block 956960 (2026-07-06T23:19:16Z), 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/ESA011988664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd55ed433228f4e0a8151bdced62dc0b99f8f937095ebd2d6f460f2c254843a. 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/ESA011988666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa259b5810160d88d9deceafa84978adcc84b31db7bdb29dee23e2cbfcb3ed8f7. 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/ESA011988668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a61a50388d113e1e6471fcb8f7f953187ee5db816fa7c64762aac427c9ed9a. 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/ESA011988669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5671469d4316e979ddc2cdecee016e7a7db98e0af29c3492ab3a18eb7fe3a4a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ESA011988671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b21f653e1728e95021df96742e6baf1ffcde6b84c250dbdeb7746868f32564. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZS642331734.
Balacera De Cachete (DjWillyintheMix Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa830fe9fac4813b144ad06ce7e505c945bf58afa8ab5b7a0c053522ad935482c. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZKDK2115690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7b9c6b04c7cb79e0cea044bcb0bb8c236176ddd14e467e85f6ae7d1501a52b. 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/ES71G1509191.
VERANO 2022 (Los Hits del Verano 2022 - Los Exitos del Momento)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7b9c6b04c7cb79e0cea044bcb0bb8c236176ddd14e467e85f6ae7d1501a52b. 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/ES71G1509191.
Pla Cacha Pla (Porque No Te Pones En Cuatro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9004c0a11e00329e2a1b62fa98b0eb02653a610f99d0ae82761542a0c35af8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6P41896802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511c1df16f267da461e354b36585e9f8739f84ece2f8d0115daa67ae5ee1646c. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QMBZ92034424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca7c6e7b9c6527d1602d5430935653cb2851f9019f0f04d88ebd795e78fe040. 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/QZHZ32189915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c037298a12164ddb89612dfdeb8eff8163f0a2ba8796d63d5f6726b127f5cb. 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/QZHZ32189918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a3087cae00a7b495676781853ab96e0d355fc6446692bfd78c8f138f37e09d. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/QZHZ32189916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc06c59f76307dce161502ac5a9211255c4a8e31beb07f0e91c2a4e471618ce. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZHZ32189912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b08c4f81f2390dda06e97abe3a06880f209bcfcfd91322a17cc0ba37b2bb4e2. 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/GBSMU2668033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef18312af79fa64c0651bd5e02d8ce7e0ede95ec035272ad2a885aa343e26ed. 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/GBSMU2668036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a34c9b9ecf643b2e8b34c6b65cdd91c6e890766adfb488653eea51bfbdd526. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZPEW2591742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523a498da8eab325680f222355ddbacba96607a1d2e74b878f0494cd69843ba3. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USJ3V2391366.