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 0x5dc53df2ebee02e3df4b4671be17e56aba4bf3138ae28abd12ca722282822b46. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a80f3c3-f923-4173-ba61-17a07377705a.json and https://artists.proofprofile.net/proofs/artist/6a80f3c3-f923-4173-ba61-17a07377705a.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 0xf6506af84a62346bd5c7c3d9eedcae916fe6a544025c06c00947b51de8876809. 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/MXF160100320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f2db2ba3bfe6b5e98104c86287c7e64dd4e10fea4e5ae9e69ca6bd34cc57b1. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/MXF160001367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864fbe2ccc6d60ef7163e9d120f7a64d5d511e7433a915a344eb110e9fffd5b4. 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/ES5151402739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1cedefa0c0417e2fa9ce9b502486498484bd061f1388769d00339d92946fac. 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/MXF160102053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd5808cab5add5821ffd6c4cb423b55936b8e49ecf094b7ac64f02a1f2bbb1e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ES5151602188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d4868e31d356c139aafe9b606c4cb691a59b5bba26559701436463edb8decf. 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/MXF160100478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3180babf9f058f352e958b50d73060b61b6515b32a619d23a1d7f07e00917759. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/MXF160201939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf7e44bdbb6c5bc4e3f0aa608f33e3f9bc793e8c4df3759b86d5b89b1d908e9. 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/MXF160800567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0fe311e055f8c6550ac8ad75181e28b574344649f20597c9531b996bf6db9b. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/MXF160102050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f6d674267bbe8053ebb9f52c4e61b4521a956ef0335db8c64113b2bd21a151. 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/MXF161300757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03bc557f68bef835ad685136d18a1e713cb7bec9c1154d57a5310667e0ff61c. 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/GBAYE0101138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a656ca5061f805686164884b48d453eb84f01d6c01d1b8d16fb7ed0233cdd0. 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/ES5151402822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9f65f7b0080e4b8a90c1d49acd1c54ae78402384cead65e840505a7194f41d. 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/ES5151402506.
Éxitos de 1966. Artistas Originales (Remastered 2015)
Yo soy aquél (Eurovision'66) - 2015 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1d90547299f60119a8ebf36bd0934f44c50951227327c4764ad4317f290635. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ES5151500827.
Ninguno me puede juzgar - Nessuno mi pud gijoicare (2015 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93e7d4ca551223937cc3faad3c27d94785d21dac2d975ab7737e1000b18c9fc. 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/ES5151500840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055a73d27f416b434d9d7e4de24bbe4efcd2138b70521b603979ea274542dc05. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/MXF160100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb161f899a0983ae678fc537ae05d15c70a455c1a056de74c0e890ac6e5040419. 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/MXF160207596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce9a37f5aaba7e920e2bb8b254742a4f0c7d4dd0715326e03b1f2c0eea60bb5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES6341800127.
Todas sus grabaciones en Hispavox (1966-1969) [Remastered 2015]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06377974dea6d0f45767b09ec2614491bde3876cf24faaa3b29e96cc1c58c28d. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/ES5151402747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf559ec490cc82f368b77605f7017825dfcf8a42ed173dd69b3b0abb70441a541. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ES5151402742.
No encuentro comprensión - 2015 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3047d828ade68a3efbd5c1d030cc251cb17d698aea6f30e3034dd8c437ae9ba3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5151402740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072737418da17b10205bbfee90410471f8b4a814f39a89cb1eece1dc11f0aad3. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ES5151402743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6bab691d8f3f0a524dcff7f36a95d8c808ef835774a6c96dfd8a2d8c48c32c. 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/ES5151402737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9440ad7707f0aa2126fde95a481dc062186e1d33ca78258c907a73ec824e9e90. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ES5151402741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864fbe2ccc6d60ef7163e9d120f7a64d5d511e7433a915a344eb110e9fffd5b4. 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/ES5151402739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0cf3e9bdf54eb7b638e30e7d228034e30fcc27594450eeea66595f8f29ce5c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES5151402753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d50780425285f36e9d4167eaa52739186515a6551c956d53506a97e9da4cea0. 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/ES5151402756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5f4b5f3073611c769ccb38161f7a8e02db995724171b92854967ad684c9b02. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/ES5151402760.
Te quiero porque te quiero - 2015 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b440a5ee80f4569313f1c534a820e0a142ba1d0e56150da0feee7c4167f535. 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/ES5151402762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28eb2ea6aa1a6db3989cee802a501c0daf438f95783dee48486f08547f27d270. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ES5151402763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6bab691d8f3f0a524dcff7f36a95d8c808ef835774a6c96dfd8a2d8c48c32c. 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/ES5151402737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864fbe2ccc6d60ef7163e9d120f7a64d5d511e7433a915a344eb110e9fffd5b4. 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/ES5151402739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9440ad7707f0aa2126fde95a481dc062186e1d33ca78258c907a73ec824e9e90. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ES5151402741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf559ec490cc82f368b77605f7017825dfcf8a42ed173dd69b3b0abb70441a541. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES5151402742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072737418da17b10205bbfee90410471f8b4a814f39a89cb1eece1dc11f0aad3. 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/ES5151402743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fe2cf4fc05e97d805ea5011aa66bc2d8e8102626b7d96ecd6da2836b492e38. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/ES5151402746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a5761394ffc9f16620393912f2761c7d8546ca32c68779fb1851f669af4341. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5022301266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a454883c391b8d42697f19cdfbf0eca9e992a1656f28244da502f9962120dc. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/ES5099800377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40281e94b849bc9793b44dc02b0fd0dca8001abd7369d41bef69c9668527e2d6. 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/ES5087300146.
55 días en Pekín (de la película "55 días en Pekín") - 2018 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af8cbc6a9a965c061f317ededdaa5a0df86ae1e43a398ede875027462b0f576. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ES5151801916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4ec71dbb97459617d25c6f52af93913d62761adb7d50ae0197b0e299b18a17. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ES31E2402014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184a181091be6b08b9da913c58fdc87c3bf089afe7507060b718919180af8036. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ES5089603404.