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 0xc0a22dd3c18e4ed184cf8463440e9d033b4951e46b1adf89735c0047cdf9069f. 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/e20b0beb-4ed3-4adc-9b72-3de4184906fd.json and https://artists.proofprofile.net/proofs/artist/e20b0beb-4ed3-4adc-9b72-3de4184906fd.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 0x35531faab731529c3605bb3327bfb39a918a6d1aa06544b0062de97a0b964775. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/ES64E2416849.
Sé Llevarte - Unreleased 2005 Griffi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abb81a0e4df1314ab938cef0b535c907ed9580900f98a484505f644499e1dd1. 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/ES64E2416865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d16e90dfa488f6a6ca7befc6b27d01022e340ea54ed67be5e538c5e4702d6cc. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/ES64E2416850.
Mi Nombre - Unreleased 2005 Griffi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaff0adf9c5d3331a912c839e311e79cc76a47ff0abcea69879e47a57a41cd6e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ES64E2416866.
Así Es el Juego - Unreleased 2005 Griffi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc123e0519ce2c35555ca04cbbc3af8d306c0dd69b9d88c4887b522d7a04872fd. 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/ES64E2416867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f65703b850ab9006fa9078490d6ccca0b2d07658e0c57921a57527a70323cfa. 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/ES64E2416852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7333be663339e11c0c11c444434fd6bf67fbb8db628bb7065c963491c96ec8. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/ES64E2416853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de8c3cf4344d3040224238d16fae6c342fcecd7d8da16d9c13f88a5958a87ef. 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/ES64E2416854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c03e22c18d0a8bc7c54f01750dcff4c9413a44cc24f0428835437839846638. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ES64E2416855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dba9a28ad4d443d981c561a4d4b5a9ae3452fa7628dd1c43974193ae9436234. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/ES64E2416856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc602749ad694518976fef6245dd119d2cfc89a5183e87ac641f0736885610628. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/ES64E2416857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43496a3675d264439f0955ad9baacdc95a3b9fd8364ab4722a4de0fb580e55da. 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/ES64E2416858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3610023b2f8f647affff48750aed9810caeab84d5c6528dd1b6f0efb41aa4fb5. 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/ES64E2416859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3ddc51a5698e1095ba891a8e4b12ba5aeffbc5aa775860bc76ca42c928a292. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ES64E2416860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55116c6d38bf95cc7f5bb3c6f29ee27fd0c7321fbfa786e0d1a1c7e7b32b0364. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ES64E2416861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee6b0e6a3e4c2abb045badd9b4b21882c72a20864b2710926ef43c1638e3cc7. 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/ES64E2416862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3851148bc391531d3c72d1d67787df4f621fb13c4f4c6237c5da3e021c8f8003. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ES64E2416863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ad3b7c0b7a039d4eee73a97bce86a3813435a58bb1d8ac57dd4ec15bc15742. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/ES64E2416864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4febfe8ae13e789a959b92284606b615b6b8825d8d103eead9e8aa7425dd21. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES8241470407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5341eacf8d4aae6e7ab0d494094c75c5a7af8946846b1dff76db12b8b49b9514. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USCGJ1502836.
Çoleá pa tu mare (feat. Tremendo & Lolo de la Encarna) - Fausto Taranto Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba3d775db71f7aa31dbff3d491f1e2776ee691dbb31e81c1052114633d75c02. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ES09S2000304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3be0f8dab9c7048bd06cebae5af62779efb711e3ae65a8ab8e95e1f1c9359a. 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/ES8241474714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0b7670b87ed660f6f46065bfe3316764dc9043bb7ea47330290eba8d513acb. 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/ES8241474716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8160165cc29424f31b5825432c115e02b1ad3b5b3c2479136f1680dca2ce1e19. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/ES6100494001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4961b3953afd6983995a356be5aae0e44470ead2c73bd139d43c1c4bd40b6f7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES6100494002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63a48338d5acd6aadd2db767ae88050b8badebd3a7f08fb33126b464bc1438f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES6100393601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85ac2aa10d6d550402c3962a026cabbf870958a6530438141c96d2beb4e1aea. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES6100494005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a9aa722bb6bafbf91bd630e46511685cc9185362bdf3a7762778f6056da0a1. 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/ES6100494006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2b9d74660c6397a1fb1865605f165be2c69d1379ac23d4912dc6c79b5e45a6. 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/ES6100494007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129dd6958a906329829f406ef7d717b20667aa05aacdcb1f076dcf1a4002e764. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES6100494008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac5e21bd48454c5ffe60f6d0e01a67398b87003e889573b0b51c1311038e4e2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES6100494009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4ae3306d0e2c9ffb443ef9f4f38f468d71cedea9ee74c71e95f6adbbb0807f. 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/ES6100494010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20040eaa474462b911f13feaf2dc2c3bc9dec762bf574c14d6a7d4bf83cf48ff. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES6100494011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a9a33f84847de4ff6850fd900fee7e0ce076c689134c69adcf05475c355400. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES6100393902.