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 0xc3e0bf38b4ee1e5a1a0654235f0b46d9386f5ff90b8c72e34a8487f25b50c477. 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/33963197-5462-4638-be14-4a6cc4f8e865.json and https://artists.proofprofile.net/proofs/artist/33963197-5462-4638-be14-4a6cc4f8e865.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 0xe919a31c2c8115696a81c90fbbbafdec4f29e986e9eea42aa9d15e8c11146530. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPB290200509.
Presente de Natal 〜bossa nova christmas〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a118b9b5e895ac61b2ac795acd4998905271c552fc517ce07d5d2fc23f1ae9. 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/JPB600800801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfa04496d131f666e9238e81e93105f623d06c7745cc4aa44841d946f06c378. 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/JPB600800803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8e8723f7dc646c485e8eee44b54fd23ef8025027fcf8b21296be0c412a0e70. 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/JPB600800810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07b7fe3e9175438bb6ef9ebeee547f4d36284b005d59063a44d8ce9bc00f47c. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/JPB600920501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7a05d568b3454fcf8567f5c12d5ea8e2cb86b163ce7690de547cb869234f88. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/JPB600920503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf81d1c4ff585880c3767561620ee6348d27777621c845691a0a818b32e9cd99. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/JPB600920504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43387c1ee86bf1ac3c9cd1949f8c4120b85b56cde2a6ddbda7f14598ab7981f5. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/JPB600920508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18eacc1a10d9c9225d8eb8fadc504dfbd4c813c0c61760173140cf82e77f7347. 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/JPB600920509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bacd63f7cbc5c87815423538613400b8cd483a5ce6cd4ffd497ac14a077871. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/JPB600920510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49b445556dae07d7d604d8dc761a2c6d480d9a5582d47bbce90ec78644733ee. 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/JPB601129301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76921ad15b39a55983a5258b4c81aa1eff518b1a1aaa516c85e973fc22dc9951. 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/JPB601129302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9828f3cc9d101247708144365716d0ff0d94a0b3e8a6c39c565a5ec12d479d79. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPB601129304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d32896c3aa6fbc33a7a32b5eaff33937448d12e04b7b3ae724153bb5a4b854. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPB601129305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa897150e2378cb7fdccbad354f6e03e5ed9750449e4bb6674ff8087cb8178a23. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/JPB601129306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc99cf3f139295b01813c5acc9b6ec99559a1f4fc2fefae520f1033775c23278. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/JPB601300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c6048dae07f6c021d307eefaf8bcfebf9c37f974f85efa5a8cde5f2e0eac5c. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/JPB601300609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b124fb57e0e8d0d9d409a2de955ca62b05be8786b44e3fd5868049bbd16318d. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/JPB601300615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26aac0d08eb5f797ee971b9bf75eba124b34b860e6c3682f5833167d6bcaaa9a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/JPB601300618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5c573727a00734f42eeb3e3416a6f74ce5066a0c9e5632b6b3c382f2cec0c4. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/JPB601600248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671a31689e25546410f6fee3ae53c81a4f86d64b4e0113adb4fc9bf8648cc796. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/JPB601600249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1777067464ab2a189109431d1fda4e29d5a39f1d0be029d77c554ee8eca3f2b2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPB601600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f6a3ab3f3f102aae6d0eac7bc1a667d12446b8e52cfc2a266c79054fe17fee. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/JPB601600251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827172c55429b95a3a935362de6356253b3ffbf22b8f08a2e57af96909a660b9. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/JPB601600252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc765aee21dea251be295b7d1f4dfcbc0883074e4b2a58d80815730f6eef095d2. 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/JPB601600254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb505b5d6856999dc1b5b8b6c1d131616be3d7068e9424851610412bef27e95. 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/JPPO02203833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaa034eb27c51a0ae4e6979fb846c2efd356e64337ba5d3bd91fa61e248f9aa. 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/JPPO02203836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ed07e7f3be7c487e0a1637a9c689a5c4b0a232528c28ee67cf92b72b5639c3. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/JPPO02203838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142dfeaac805659020fca50da4f8ac6e57b26f93f7638d1caaba82df09499cbe. 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/JPPO02203839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd3fa029fb3548ff9d5f626f949cfd149d08626d1d17b675a5d4636a8ae4a49. 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/JPB291605103.