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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f50c1254416fbd514d87f3c16d9c7b5515f956ad377a5ac961aadbba16aac7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef38e303-7791-481e-9578-8adb2d74f827.json and https://artists.proofprofile.net/proofs/artist/ef38e303-7791-481e-9578-8adb2d74f827.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977c6451869d79680f8e848db564be6a5a0d176776d9e3eb3b715e016b46dbfe. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/FR2X41557406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2f7098ea4af7caa40ca9e8027f3e4ec49bd2d22acc01cab157765560568dfd. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR2X41580717.
Selección de Sayas / El Funeral del Río / Negrita / Saya de Amor - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bef16cf023fd64aec607d5367ff546d42994fd183f6a40e382b15c45afd60f6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR2X41580725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc1007280fd38337a4f263793bc7487e2fd403351e11f702ecbc7036fa868c6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR2X41557390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69bdc0bb012185ea32fadb975e9d2ad33a23c760edda32f62335949dbaf5da8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR2X41557417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7f7f4ba5cc6b67c7a2c837ba85b6b5c221223e73d52c3b05d7e40f04d5bbaf. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:37:29Z), 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/FR2X41585967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5628563fed2025f21ae8ef6ba24140dd3378c465558731c7abc7be9f5f028e. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR2X41585971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a436cdea04e1ba61b10d432291ea09e2a6ca75fc8afbdc15568812f0136fe1. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/PEDJ10310401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42f81c2111f53d9c4a2a33bcf63c5f6b012a0704f8ec47dd2f0f789e29a29c6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PEDJ10310404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b15c5b60678d215583600be390c042c8d0a7d2ca78b89723692b843b1b3b177. 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/PEDJ10310406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b1fa7d1f24befde6115faf69543598f60fa06a4c8993f37b7e09106746ec49. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PEDJ10310411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7214ec637c655de7b42daf51c365bb3743560ef49f150b2434fe1de635455bf8. 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/PEDJ10617502.
Saya en el Valle / Corazón de Fuego / Zambito (En Directo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c16759abbdc7e9e1c764258f100fc2549f70279890951690dd0fc28de89f5a6. 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/PEDJ10617503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18404705b432253f54fbc04a84b9d22f29ce02ba0fdc65af44261d5237f6d1b2. 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/PEDJ10617504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4711379a11ebca746c7b4c7f2cc0c218d475ef1219b44d2b48266285abaf84f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:30:37Z), 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/PEDJ10617509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3b6e354f6c6ef57f5876d562d8e05bdbca553bd3caa672bcd1aba126a5d890. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DGA062404788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82227859ea1ac4dfb5a567e96aa6adbaeb0abae9cb79e6531aeb72bf0a04dc6c. 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/DGA062404790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390957b94a8b5db672c8b1075ca72753b8c4c9a37312b19740fd9c0b41e02ef1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DGA062404792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc7236ede7a2be784b6c0a7d0c7614b4e86be8cf3f4d5d400c7de5b82ef684d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DGA062404782.