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 0x54ef109bc7ec3418787c48e639afdb06cc0ee26c835cce39e59d36249e423045. 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/ddbf1d72-5c6e-4b69-bd5e-424b77fcae94.json and https://artists.proofprofile.net/proofs/artist/ddbf1d72-5c6e-4b69-bd5e-424b77fcae94.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 0x113f90a840f7e47d22cacab5303932d89f3ea498cfebcb4b54e42f7ff9e4d413. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZQMB2103512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdf0853ae1793a0005186272d8e9b3972e880e9bcd4b9498cf66c37c97d2ed4. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZDQH1828505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4711ec869a0155722c6c61a527b8324b82b5a2dd5e2cf552a6a1fd516549375d. 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/QZDQH1828600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c7f1c999baf13f42938a0fc0b85390d80045984bc4cb6fd0ebf04e263d1d5d. 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/QZDQH1828609.
En Vivo ´21 - Con El Conjunto Honorables
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d6b259787f7331a61eb436187ca54a4609487d5998ad2946f5f82402930093. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZDQH1828583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ee056bb354788e04555dc1a39cf70feb7bb6bb4a3273821ee9381388732de4. 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/QZDQH1828589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7924e36ff73d8d2f9c0145d05bbe9efbf22150ef6cb63332dfa72f532cd70644. 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/QZQMB2106016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a8651a943b50631109906edd5429d06734d7e0bb794261783bb5969448d255. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZQMB2106022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7d16a637c1a70a2f800a4842eddda6890aa93c6dec786c09ef6bdffd5c9cc2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZQMB2106812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170970fe2b730786292d2780a28c693673fdef174db91ac1da1634f00dae8ab4. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/QZQMB2106984.
Todo El Mundo Bailando Cumbias (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31e4358d53d0a152c3fab415d0cce597871c0678e423373696413b0996bbe94. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZQMB2107218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7d27685a497827c9c30e52203b608e63107b28bd035b9f7f393a48f2176056. 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/QT4C62500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137b33b5039b229b63cc588ea8c0512bfbcbad163d1445f58a10173e9ddd8304. 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/QT4C62500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf02cb6ee569a2fbb75024591fb8b629bd44dcdfac632d9e8a8ebb9b110aab92. 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/QT4C62500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1d5e9958b11a9d295c9e4347799e2d1f7416f4d476f3a0fa54558c5869dff7. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QT4C62500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4772cb3d3b9fb0d1fcc30b1c8a130ffd24c4a3f9460a461f0a0e0ed2c6e0c2a0. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QT4C62500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4835902fc751dcabd8871facdbfa1ef01259329b8bd1dc98fbdc36dcc8d9b9d0. 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/QT4C62500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f2a7bb96fd2063f240b0535d3803f80082e66bfbf36befa2c2847db4065b56. 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/QT4C62500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827b24196838f60b342385d3fbf5ccf3986b0985bedddf26d7339154b1197c47. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QT4C62500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee780d283a66471c01dd08a41c46f6693ae686636ec030b9c669dbc1119a21e. 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/QT4C62500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f38b235f81f9a77c97b72334668a8e8394b325d4acb4db7fdd69274ba6154be. 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/QT4C62500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe530ee3f632c0366e851dbb91f4c2b0353b06c126a05bf3554640af933d2fa65. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QT4C62500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcde439fe493be34bcf96c169fd88715adf6e8f1557b66149002b4bbff001eea. 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/QT4C62500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc922adbdee47cf9a1d74a5436858c0f635fd870208b700f5d423a36ec5f65804. 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/QT4C62500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48049bd707a9292ba5f2b884c3b185880022015a5342f9b0b27b9325b4af2769. 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/QT4C62500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fdda29c4666f740afec7874fd266d46123bbc6b544ceb26602b0b4defa01d0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QT4C62500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51094d8192bea04d6369693c27f9adf87b4452636ab4df7ad977ea3c7a427747. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MXF152500810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b0baef3a595fcd5dd8d1e93cefe555bf985e7125dac989daf4081c01a096fb. 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/MXF152500811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67c4d423ec31f381e569cb89c48db7d8bf6a778c297179e55ae51a842895a24. 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/MXF152500812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b87e38880ec0e26d66326d73d77fae4642fc605d10c73dfe7be63c1ecfff73. 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/MXF152500813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe373266825f481591135b4b901e51672c172b02bc0e1992d294fda911b3ae135. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/MXF152500814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5a5c8577dcc910e8958a9e057b7dbd98346af99763929b853508d75893a42a. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/MXF152500815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e8980c81618e0ad10d302bb37a1d1d390b2bf7d413f2feefd6f63398231f80. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/MXF152500816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6f4abc02dcfb2c8775ca69e63a4f647fe5f6879f9cf94fa829eb6e6de009ef. 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/MXF152500817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e70c52f5fe53eb0a10c123468234604195cfa70a04e45760c6b81dbc5b6c47. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/MXF152500818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373895cc8539059cf541bec8bc935145ff95feb5d3916a9252314fbc01a69fc8. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/MXF152500819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad788e61d3013fdda23d561d6a5f649346f31f5b0e15df680a315537042bd1e2. 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/MXF152500820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976bef947ed26638c179701047cebd763054a6ae3442f4af7ba6162e839456a8. 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/MXF152500821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9325ff79f327e53ad37dae50762ee8b9dbef6a68e9ae38837fbc3749ef13dd89. 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/QZDQH2264438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc763e55bccb646f893ec979601389876e28620af72d3e6f357bc5190e9d0ca3e. 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/QZQMB2104113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a395f0a92f19d133355e9bc80dc7930face7d8e5da5d77003f245d6f0aaad2. 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/QZQMB2104129.