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 0x837625ff0e76634fc9f5014a7e9bcab02344d8bd7c7a73e2ef881546344b9ddf. 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/76bab12c-07c3-44b6-9ae2-de64cda78cbe.json and https://artists.proofprofile.net/proofs/artist/76bab12c-07c3-44b6-9ae2-de64cda78cbe.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 0x178d9de0ebbb50980ae8ce3d23ab50a3ba64b1e5fd48b96a6538258b4bca0c9c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCABW1422770.
Nada Que Me Lo da (feat. Francis Dávila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336b1c88bbd83ad7cee14841dd64808a1d63e0674d0f97864b44cdb16caa5a1f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCABW1422779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21886af9296278d038cac016397539a884ad68966684d702db292b928d5dc614. 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/TCABX1454318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d67e5d95d4f718f983479332e643babf913b2c15e94a407a737bbbfa4798c9d. 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/TCABX1454320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467e44dcfb49bbc27865f20efe79ccc7837acb356274f19294fe55246bf69cc3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TCABX1454322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9813f6d490a0a4c68a153b8818d0902b0b0a771e3efe0d0c47feb5bc51168367. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCACG1563991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7443c2685954925cd5be1ee0a80ab7591b7df03060d20f97fc2ebcd83465396. 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/TCACS1621875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b2aecc40b7d205fa1d21d3ff5b8f2a552ef3c8aec270698d31ec2bbcca1166. 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/TCACS1621900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38b68a66895323140f183e48809cc54ca9180fa050f2ecfbeddb2115a9adc9b. 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/TCACS1621911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907fcb6a60140419866d8a32d4d2ab120eab5292dae153b0cea27d5ebf6d1723. 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/TCACS1621914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f09bab05022ac5a26057994b4418e375506238cbeadee4f6e2e454b6b1eed1e. 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/TCACS1621915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47607b64d599a08029a5308f52ab3906bcb031305d1c97a8e114acf03fe0ff3e. 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/TCACS1621918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cece3e447dbdd6ad875a4fef7bb2973365b1e4167ad79bd777fdc9b263ee5b. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/TCACS1621919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58154e3c9967778c394109c0f5f26dbfd74260d82ddff3f3f2db21f8d109c156. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/TCACS1621920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac95ae677d840cf58ebe67f03964fc0a3667cf3b8055355dbd21f32327a9117. 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/TCACS1621922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fc4f9e5c97a12fd4400f2184f1893886807ae9c8fa7b313a8a6313821c894f. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCAEL1906541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cb1d05f37ea25fc7a90db045ff971b5b8f9dbf5240432e3b8bf96622ea11c3. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCAEL1906543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f00c0d55d64713982847f6aae729880da26d3405b22f5725de6e094879f566. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/TCAEL1906552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e8138216dac6df9e632486411b5e1ec40c8891872bf5b822e2e5cae5100944. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/TCAFG2021227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3443850656afba69e738e0502f29efd0f454017a3bd4b27d0edd86de797e6a07. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/QZRP52123179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb918d631d5fe5ff534f89b67252fa3097d55a93d9150844f5bd5b312bc7ee5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAGE2297866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeebd9e513453fda7ef464f80ac757d69eb629525551e33e34462d4bd60e9e39. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/TCAGE2297870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e3c365409894bec02a5e80827130d33d348cb2fb7c8138c27d06822d0dce1d. 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/TCAGE2297876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f70b6c7dce5bbb5c7d0b25b888c79967a3bf386caec234addfbdd141aabe98a. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/TCAGE2297914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87435dce5e5447850bddec7a8e902e5b691b621d6f1fbf0296d3163b6c40d7bb. 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/TCAGE2297918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f99830f16dbe684c54d7768f1e8b4fb7e873f1b64a40b6d428c88f1debac27c. 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/TCAHI2303153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80a032ed5146fd531dc45549cd77f5de976317ad8608b9f580e2389238c364a. 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/TCAIG2463751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d238bcc12a9bae8b2a6e9d4c0cf0c67f91a893eacf0f81b50211985f3679569. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJJ2571602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d924b3ddab67320f8dcb5a362c98b86e78d245eddcd482869ba0d52adb343f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QT6622554198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2647c28a0b6fcd45bbdb9dc863d81be4c4b0f3381d63f46aa4f8e3b899b2b7fb. 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/GTA242200041.