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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b04a7328be29bca417c0ee22e2b8554dc5f2059ede81201859b019cb41d536. 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/d00e8b15-6c87-488f-b9bb-b28fb11761a8.json and https://artists.proofprofile.net/proofs/artist/d00e8b15-6c87-488f-b9bb-b28fb11761a8.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1108576da8cf6643e4caad2006eb16f3ec543b8fc5e1afe119c3dcce4f17663f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:10Z), 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/QZDA62010128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293f00eb4ca38e68e3170c04bcd77c8c5fe805abe3e38fd9558624cb32e8ea57. 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/QZDA62010130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f78670c449279dc299ebbdcbdac35ce17d13e7b21f797fab717d39be55b42f. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/QZDA62010131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e52caa49f46a939c7990aa754b54f3b647245d5b7ce44110b66253b0fb11f2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDA62010133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf658ea819a5deea6d706ecf3f2e00325b330e803e2b92442b843006d697cacf. 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/QZDA62010136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f78670c449279dc299ebbdcbdac35ce17d13e7b21f797fab717d39be55b42f. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZDA62010131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638518ac780fbf6bb86733486823200f18b0c5b9ec43a8ca71f15e9560ea576d. 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/QZDA62010132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa68190561de36a2882e864cdd99198286ca2199145eac9dae7929f42bff5f7c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDA62010134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1cb2ac84ed417a97a3f59ac039fe3ea2f44caef38b4e9c4665b6e7df7cd79c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZDA62010135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14fce9b3f29406e3f259830eae9c7847b52123a80faa783cd116439fc95fdd4. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZS662149575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a2631c935c2f9c55b267375a97be76b10cf3998b3201fb47cfb600acd3f1d4. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/USA2P1938869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd7127d11bc44664f1724e6b8dbeda68b6a3fcbde77680da4bea8f3ecf48829. 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/USA2P1938878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2719459573124a9d18b52c4d66c5acf2be9a922da99f7ca985fed52ccfe8f7ff. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA62232358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0f1d0d17b0af0ed8373daffc518088ac46b8ef26b9c0362a522115e7e0c60d. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:11Z), 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/QZDA62232359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737747f7799a3c8ed0fe6e53936f5743661e5068884f443d9f15094096eb648f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:18:31Z), 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/QZDA62232361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737747f7799a3c8ed0fe6e53936f5743661e5068884f443d9f15094096eb648f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZDA62232361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181d7c3089e4d53f5882a4aeb1722aab38aa398563b0b87921f2195e38f96c4f. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QZK6K2321835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d1dfaed5030b21db3cb2d3310df7e9cf43e3b9d462848b56fd417af3b14ddc. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6K2321836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d72b9f10679d23356f40c3ddf834976317135ce914d4fd7b1b969ed832397c8. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZK6K2321837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3679838433bc776cdc7a2745e134f388353bced5935a787f1327f31c218ddca3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:57:03Z), 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/QZTAY2463750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3679838433bc776cdc7a2745e134f388353bced5935a787f1327f31c218ddca3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZTAY2463750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abef25a13477e14d07f390aa55d6432e5de54773b4a02d76fd4641809d174e2. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:43:40Z), 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/QZTAY2465202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106fab4101f98633e0ce6aaae737ba7b371d196c0c0ffda0d9a1ffc3b900ae09. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTAY2465204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220abc193eec613c7198a494b4aa5404ed6d1352244b71074cf32fa3fc66baeb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTAY2465205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc598506cc192db7584ba2ce5a8c694736b74a21766667bc5cb2434f8d8db7e74. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZTAY2465206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e7c19835bc4ab2c9e272a3ea90fcb09f20b7b25062e8554e55315e477520a2. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTAY2465209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1e1bd09be358439d0f60ea2ce4a9d42aa8753412968afff05256dd6dcdfee8. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:31:34Z), 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/QZTAY2465208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e7c19835bc4ab2c9e272a3ea90fcb09f20b7b25062e8554e55315e477520a2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTAY2465209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebb5312e75e2e0e95a86cc14b9d9ec7bb74d2624409d2ec5b87dcd657609a89. 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/QZTAZ2420826.