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 0x5d20634fd0e9c02f5922287fd590ab05c137da12026c595113784a3776ac1690. 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/760dafb2-6a6b-4fc1-87fe-c98169c240d8.json and https://artists.proofprofile.net/proofs/artist/760dafb2-6a6b-4fc1-87fe-c98169c240d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Los Calchakis, Vol. 1 : Flûtes des Terres Incas
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 0xf5f2790ec11cb61211ed2df0e750d475414883abb62a65a25b12ebcaea55b3ba. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/FRZ178410010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57da831c236f1ecf070abc7bc36ea74be94f8f58da0cc7a1fcbbe96f5a400033. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/FRZ177010230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0497cc3e5488e077d68e2a37e33aea6920003f1fb161f67e22af5b9d39b07d19. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/FRZ177210160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd68539fe959430a2e0b566e6a4c6551c1af64d277c8556092692790da4089e8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FRZ177110590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7190b41b9d55b23a05aa73a449884fc3c00b6524ca162e3258dfe5d7d22ed6d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRZ177110600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396edee8d0919acc290e00ab94b8295da1921dd7ad6cf609f93b3959de322e9a. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/FRZ176910020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ddd16c63c099add2ee4107a755bc440d20305fe9cb29ab985039a71ac13407. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/FRZ177610020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572d3c2035aab60f9d7e017aee07c0c00e01107a9d239b8c0aeb674395f2057a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FRZ178010870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28162ec0527f9d0e6bc3ff465367a3815699d1f761cfa7bf42328f41f290780a. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/FRZ177010240.
Los Calchakis, Vol. 3 : Prestige de la musique latino- américaine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5baff9428790aa37da5ce8c999d07d3f07079fe187bc6260173c41660c40890a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRZ178610100.
Los Calchakis, Vol. 2 : Flûtes de pan des Andes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580faf65db5975575ae000ad20ca786f9bfe9e553b095f3291260b297d3a704e. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/FRZ177910140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd567b18ad8f26ad697196b8caf4e7bb4b7f4cabd83d2d0b2fee8f41db4fbf507. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/FRZ177110610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49ed4919adb5aa9e674edc776f7a3dee6342f32d963582343ea87253a342baf. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/FRZ177510520.
Los Calchakis, Vol. 4 : Harpe, marinba, et guitares latino-americaines
Los Calchakis, Vol. 5 : Chantent l'Amérique latine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abd5581a8a1a3ce4a39dbb23660d9317b4979465f476a990705b06566febafc. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRZ177310450.
Los Calchakis, Vol. 6 : Missa Criolla, Hombre Libre, Mundo Nuevo
Los Calchakis, Vol. 7 : Sur les ailes du condor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f9cc6955ebea02666645aa7af4a1f8e4d031fa646688cd39badd1d8d0307d0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRZ178510030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15d338cda9cadc8bb5b2eaba4b5879cb23d8c1f43836e0bb5ee522fb15bee58. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRZ177210180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba86fb68b5d1dc7afc97947451b39355fa0f6623f2a21cc865ed4df408503fd. 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/FRZ177410010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ec59920d662b1277265aeb80f724a1e2e1e6fac449fc7fb9eb97d729ede8d9. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FRZ177410080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6162b4bf16e7602d72bd3ba745cd38ebcb9ea2620169fc7d34bcdee1a5735b53. 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/FRZ177410140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb07af725f72e33b4d9602c82414243dd2a4bb395b2d065bf5e4a1519d9e289. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FRZ177610180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08293889a5833ee5e27106f5d8f052fdbea53e84881ee18edcf58933be57d320. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRZ178010840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44da63785f4d5d2906d092ca80c72c772abbaff196a800dc3a5916810f07f8f8. 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/FRZ177610190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf169fb929b9d72430d373a7bbd33df553cd838f10c20883573d5e5b27a12937a. 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/FRZ177810340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bdcdaf26d0110aabae6a44e2658691679ff293ae5578085d87fac860d55b2b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRZ177110010.
Los Calchakis, vol.8 : Flûtes, guitares et chants d'Argentine
Los Calchakis, vol. 9 : Entre vallées et montagnes
FLAUTAS, GUITARRAS Y CANTOS DE ARGENTINA
Los Calchakis, Vol. 10 : Sous le soleil sud americain
Los Calchakis, vol. 11 : Los Colchakis et leurs flûtes de pan Eldorado
Los Calchakis, Vol. 12 : Au fil des années
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bd014849f7f620587d67798c7832d2ab531c112d86088954446814f00a052c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRZ177020010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ee2de643f984f10b00bfb6f570078ba9d2c75b8135d5c351aeccfda3dfb3d6. 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/FRZ177020020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b2dcdbc89c083827595f26f7f857c7b79a7ea4ce6e9291b6273bf806f108ca. 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/FRZ177020030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104ef40dc4516df5f5dc46b1753982700e12ee891e63fac08ab1db62897f3300. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRZ177120050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b8987c062b9c8da15b8f9558c4df054284208587ab867fdb825d10ad5f1bd1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRZ177410180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c81cca9df15d4261a809103aedf6f32aa54d49addb004b31f844098c61d74c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR6V80102246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40d88d799542dfb52b34597cc26d05488c16f7c80f2a07062faacd4c1ef4c85. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FR6V80601524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49226b0e0d7aab624cb25acc4c64c9a5b0f359ea071b36a3b464b6ee4f4ca0cb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR6V80306767.
Los Calchakis, vol.13 : Le chant des poètes révoltés
Los Calchakis, Vol.3 : Prestige de la Musique latino- américaine
Los Calchakis : Flûtes, guitares et chants d'Argentine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea8126c2de2512564a0423339dbfb4f4940c7e6cd13295f6116eaee0113e548. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/FRZ178510130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139ea3d37e739b8899c74fd5f4448251f788795cf5ef40737d59fa4653920ce3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRZ177410110.
Autentico Folkore Sudamericano - Flautas, Arpas y Guitaras
La Mejor Musica Andina - El Indio de los Andes
Les Idoles de la Musique Sud-Américaine: Los Calchakis, Vol. 1
Amor de Mis Amores - Que Nadie Sepa Mi Sufrir (Version de "La Foule" Par Edith Piaf)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6db26b2bb23d7e2ede426917f8a66d02e0a81bff6989e83cd5fa48c3952d02. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/FR0W61845607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf303c80d4713f16da663a392c5c40fa3d3c4f2af40e6ac1d37f336e1a19acb7. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/FR0W61845610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3455c7f613c6f5698bde77291a0e60fdf6e3b59d3d1a524951e03c7e4f843dc. 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/FR0W61845611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06b34fa62c9df930a542f7d32590a38ad1c50b2cdcfcb6c16e0a46e73088f3d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/FR0W61845616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf527d008b952c792291afe16db7cdb75d08ffad082eb8f010e0693b7acede26. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/FR0W61845620.
Essential Classics, Vol. 181: Los Calchakis
Essential Classics, Vol. 181: los Calchakis