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 0x3ac9b7de5be1068e693c309c4ad81314a93f81f6a95356306ea942e455b7232c. 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/8b6138df-9b84-4ea8-a19a-64b5e49220d4.json and https://artists.proofprofile.net/proofs/artist/8b6138df-9b84-4ea8-a19a-64b5e49220d4.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 0x6629a8ed89c3558bed018cf3fde2b944c89f0eb49cbff233344ee954aabe0be4. 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/QZ5AB1633135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9be13de1e58480dcfd8d3fc1d5838fb1f7b0192b65dbdd30e1a07f2b84f5460. 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/QZ5AB1633142.
Colección Estados Alterados (25th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd289f8714c8e69e1fe53057c0cc181ecd1808eaefd866d23c555c5032f43374e. 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/USDY42158842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfb9a98b930680bf2142c992fb3fcb0fb18224a873e7abd03c2da2eaf657d1e. 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/BRFOD0900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6851294de1d8089e3bfddb4533d7b8cec48aa61a6ea7ab25cb0620e10f95798. 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/ES5150800431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70c95827a9b14d20690363d124eb4efc73ec6dd0e5aad7370aab530a41460c3. 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/QM7281945433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7d1815d6ede53333f5241443f7fb4a9ad8efb4f001d7a55b82b2dd6c612e97. 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/QM6N22121600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f103b0eeeb14ce0841d3f5e10282fc857ab0a8c7d7e380f2cbc119ac8f36b9e. 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/QM6MZ2116456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33354a2feba609849e5bd06c5f3c175fffe3f5639deeaca768ed149e4495916a. 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/QM6N22121626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b43b175b58f4f45dff55ad593bbebeb854c7b565d2b95a6518ea50454116ba. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QMBZ91721702.
Un Gusto Estar Aquí (feat. Monsieur Perine & Santiago Prieto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb769aa061abab6d6663ab5d1bc8b8f1493e91d1ae8ad3b15a67764395e8a1fb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMBZ91721710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabed27b4b58ef01918f83f0fb0f14a370e81bebbd11edac21dea7d3e48f4fe51. 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/COC010827373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0670b120ba1bebd49ba723991794b30b836694db05fd0e0a407c864f8e30511d. 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/COC010827375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73f7660c2ef376e8a4ec8a3b302b7d387c51be64f74d5eb9a1b23c489bba250. 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/ES71G2431350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051c4d057bd95faeb4b39ebb553c4ebbf4074e9e01f9e1cab9ed758108a1c6ce. 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/QMDA72378888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f103b0eeeb14ce0841d3f5e10282fc857ab0a8c7d7e380f2cbc119ac8f36b9e. 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/QM6MZ2116456.
Al Oído: The Best of Mónica Giraldo (Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431a1f1aeb6cb51040d653885927fb6349cf1657422ab986a9b697187dd35ab1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR90U0500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81949a0f5ff44d8901ac57d985abad53aa03c9034983d3d8ddcbd123a511165. 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/US6QR1300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf757fda4f130b9cf077a5128ac92ba76d9325b6dc9acfa1a7b770f9cd7ead7c6. 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/US6QR1300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f7f0dcc21ae61f2459dcfbe6ff5d8f2cf5e7ade4c06dba007ea860a43bf0c0. 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/USX7J1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eea80d1139aeccbecb6b5351a502e8fce64f0cf4d50befe22cea578e8044720. 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/TCABP1324949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea67972e3d567420c7dd3749b49b715d1af50b39ceb46e47ff6f74858f4d94e. 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/US6QR1300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299b8df767364f4b7af49bb48fe4bf0164955c6cda61378388eca68943d8c036. 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/US6QR1300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee83dc9f7839e0d4b75778ea9ea05049146619d09bd73763ed8c2442ba6cd53. 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/US6QR1400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced38b9763da0eea5126c3a74f04473a520c8977813ce43ab166b2f2b3d492fe. 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/US6QR1400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2a40924e7a123370e5a1b18346d24cd316732ce85a4e8cd6a6b66cc90989b7. 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/US6QR1400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2eb13ef27531ac8d2ccec14264e664e4a40bab80315869d454211037ad5627a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/US6QR1400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97c58e436356740c6d22a6d24ae6374c8309721717a28fb42649c204e6c3d2c. 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/CAZ700904762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096773e7ce132aaa885833af8112cfbc2c341c2e31db86f1dae3222c5e992124. 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/USCGJ1432176.