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 0x71d81efeeab5a55cf369b5f162d61b3ea2cada3c59a7799ac57c9ab06d2cd0d7. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d26fdb89-1887-400c-9832-bf8ce7ea6768.json and https://artists.proofprofile.net/proofs/artist/d26fdb89-1887-400c-9832-bf8ce7ea6768.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 0x81bb530cb0fbd72ede28b73e0304cbc3ffbb5a28d6e42b424427d0b4204f92e6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ES5021603883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0f210dcecbc13c4928b7b06409394bf3063f929c9138b1e015f53e4c9ebafc. 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/USCGJ1759493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd463bdfe8a5b605327db82de3fda5507ebbca569c3290653768a7b2fda498564. 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/USCGJ1759495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc02c28d085c29361be3bea4440d4e2ebba60889f476242f62ab25517036ba8. 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/ES7630605106.
Benny Moré, El Bárbaro del Siglo (The Great Benny Moré)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549e8f2fee3d2bab32bb0be68efdfac59f80e8cb1501a31f65e0f4d9db32c753. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USJE61301761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe729f98ad36e020f315f5522003b12c5bf97c7f6488c0ebbd70890cead881110. 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/USJE61301762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ec05fc393cecefc1f9e0c9c9f8509ecc42acca1ef1601c7f7e3eaa9d00c6da. 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/DES010100604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdb10cd09a4658aedea1b64f02e5ea47dc92b24a768036d5966bff9c920bc5f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DES010100608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b49e311a2ce769fc6fa6edcfa7c812fd8ff0b11bd87caf476e4985083733b3f. 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/DES010100609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7f69fef24e84fe96066e59feb72db52181b62f3dba7e0a102e0f97ed3ed207. 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/DES010100610.
La rumba soy yo / El All Stars de la Rumba Cubana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b20542418280ca7c7e054ba89ebe9f059f28d38656faf6f501b93e563d90bf7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES6100670742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1d386ef368893fe2c7166425be977f02fd050c09dd1d420a74141b844cb3be. 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/ES6100670743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de405ae1231f52c28bde681cfb0bff042e43916f8d7a561941fe22ec66714fc. 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/ES6100670744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657d0e2760d21206bb2850774b9411189f259ab8a852fd3a42b26b4be075bf67. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES6100670745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd81173991ee34640ad4060afbfd835ed56fe4b20088eb58deb15a61b9ce14a. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ES6100670746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a9d3ebbfbc0d6a41fae92e053083779556475614c9e3dbbf74dfb1271cd640. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES6100670748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c431de2db88a7759859c4b3814d5c9304bb34a37716c0811e3fc9483fcbeacd. 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/ES6100670749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369004a7f94455ba31e1ae61066ad9a8a0660aa3505686423a1ba6932c1b0575. 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/ES6100670750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3a688575d8b845753056ab6b8bb2742b6bf4d81a9532c4a2b15cb77a2162dd. 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/ES6100670751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8decc4645f5d440403e9b44072d66e8d9fb71d7af3d28251a7509d5c41e1a7e6. 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/ES6100670753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0ad5be572cb39f18f563981f365dcea1fccc6b46f08d58a448fd7f5b489ef7. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ES6100670754.
The Hottest Music On Havana Caliente Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9df234550a755d17d2cb00e1cb4ae960973d77ffbeb69799a5b317bd138698. 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/USZZR0710746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0505c087cf9a9f731772fc5a5b8810aee697dbdc8cb7c3e97588b5b1db81735f. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/USZZR0710754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fb9ff38520810719dac4e326be8da3452932b8d058b69ca7e90e90ad0aba26. 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/GBBFT9500146.
La Rumba Soy Yo - El All-Stars de la Rumba Cubana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d151dfc1391d64ce6a4d01f4e53f1e016c2a289245e8a36a31a80cff209116b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USZ830304688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd00630cdabb6a87629ba0f9b87149a98fc281e95efd9e9e2a484ef7e76fb4a. 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/QZYFZ2397089.
Colección Imágenes y Sonidos de Cuba: Cienfuegos