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 0xa7f13b9feb5bda2562a2092d82d1565a3b13f576e138eafefbdd69e93672e621. 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/6adfe9e7-eb72-4034-8185-13cc93727e05.json and https://artists.proofprofile.net/proofs/artist/6adfe9e7-eb72-4034-8185-13cc93727e05.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 0x77fc3a202068d51394e80c959422c2c09fad1694d1be9f13d9bf8be597c383db. 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/USJ3V1497769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c18ad33e28d3f5a2575ed974a45d944276d10a8fe683e20dbfdb7d8582c426e. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USJ3V1497770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ae3e66a12e51ba5ffc75f21ab56c8735e0023e70c6cf29c5d4c42551711249. 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/USJ3V1497772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8eb56d78fa7d6f403b8328127f3ca68542615ecf2af4b0ea33aa5b97b07c0b. 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/USJ3V1497773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9469eeba7536c7cbc24f50f46191950b3da00e8318b24093be813985b003ff. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USJ3V1497774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990a1e4318f147c02f181d1d718c32b7f952bbd2b23114659c5762263e00b2d6. 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/USJ3V1497775.
Sigo Siendo Romántico- Grandes Éxitos de la Bachata
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60ed47fe1c8e193c7e7ad95c074c2d1c51315e8c291989bb233286f5a5ca523. 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/USJ3V1497777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33446586aaa64ca6c485fc90a60a58eaefe176d7a7c77c674f2c4f9ed6033d50. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USJ3V1497781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a3ff3e0bad0bb7411794dd9c75b01c0614c4d898aef73be157b7b66dbc4b61. 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/USJ3V1497784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46a349a9f25bd079fa955f12d95004d3a28816fe91dc741dd2eea517455f725. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USJ3V1497763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23b445fc1ad027a57e3efd5133315333f1ed0029934bb8fed7e798ea7ae1872. 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/USJ3V1497789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff9a8ce0781e64efc5d7b1c4857a282dee5cdece80d43f93545a8a90f1ad095. 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/USJ3V1497778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9e1ff3b11c0202331fc9d7a150a96cf02068bde2934fe9dc7510fb792d9a41. 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/USJ3V1497766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7c4a4cfa6ea5a618a6516afab756d80bbe4a53a970f968e31947e4bd224992. 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/USJ3V1497780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a844d7eb0f1da55a3032d77b1fdad00b37f7de2ec5e6a57b4770819bb561e6. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USJ3V1497768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15721b9a744fcd04be45b29e7079f5d171499cc47b9fe83e53b8cbc2000c1f9. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USJ3V1497782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06564d23d7b37f1ee24d3d55146367c842353103f8255390003674fb2ac09f4. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USJ3V1497794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52f35a74bbb4f5446073e0cfeee2a4ff0bf81a339045976c8614f0855ee3fca. 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/USJ3V1497785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d477ab260dd9cef63d131f6043778b0cf9aa3ab9115a1f535984768eb6d58d. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USJ3V1497786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3547a04f72e2e6bb403b81a4e18888d8666bc331c6e974c585ec5f6a318057. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/USJ3V1497798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec23b935791f852be2c20462ae2e0161abff19f41b80a033b465a7ba52bfbd36. 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/ES31E2101542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ddf66469832c5ec22fd315303e784016028bb19001fdaeb2a6fbd913401ec5. 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/ES31E2101544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae6a054a17dc9ff44081efc8e5b051719216348eb65339780dce6d599619cfc. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/ES31E2101545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf16bcf3e1a06ba9c03ea6d9258db4041639043b246c7684ae8c9f8df2fc0a50. 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/ES31E2102170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0438b45ec52a6d3a271f1bf893ba003cb037eecd50ad88fe9335d595ecb152ed. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ES31E2102174.
Mi Historia entre Tus Dedos (En Directo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c00c44cfc9319cbe75729e83464e6c1465421e8c6f50e1024030835f18c6d2. 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/QM6N22485510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a844d7eb0f1da55a3032d77b1fdad00b37f7de2ec5e6a57b4770819bb561e6. 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/USJ3V1497768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d40a7aad36effdee8cc49c47e94cfeab8b3d6147e2c95cfb35a13eec30d3cb. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USJ3V1497790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4818a21cd028689afe433b2ddd4c689d92bdffc0668f08cea235473184868a. 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/USJ3V1497799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2d0d98d264c3cf360f10efe41f85af19b88f0ccc0a010e8eba3aa748b5326d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNJW2359679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06564d23d7b37f1ee24d3d55146367c842353103f8255390003674fb2ac09f4. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USJ3V1497794.
Latino! Grandes Éxitos - Juan Luis Guerra / Karen Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cbde5c8e1269d53ceec37727f457c065a94cd91a8013a230aa823de9f732bd. 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/USJ3V1497762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d40a7aad36effdee8cc49c47e94cfeab8b3d6147e2c95cfb35a13eec30d3cb. 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/USJ3V1497790.