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 0xb1f65f62663c76657d40b7bdbfd1de8bf145b942081c8838a2c09593987d3750. 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/cf57a228-6036-4b3e-be3c-7512784b5aab.json and https://artists.proofprofile.net/proofs/artist/cf57a228-6036-4b3e-be3c-7512784b5aab.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 0x0efd91ffbfaa0c7d70d1e28d33fd07f0a417b811a102292ab5c3a5e49ea49c32. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:49:25Z), 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/QZWFR2352091.
OSF (004 "Choir of the Seraphim Institute")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dada793c5435e95e8826d3bedf27fcdcb6395bc7b8ace9d760be6bb10f48d3. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZFZ32406621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154ca95a27b17d675323a3d267be7677ab768d5502de3b797ce0d2b06bab45ee. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZPLR2404032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2740e4431dcd8c69bc2a68e42fcceb6a22011d70d1c5ad291a6a12070b896835. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:08:51Z), 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/QZWFF2427235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f78981871c061dd5d5e0fde310feb7a02b4eea65e95bfa97ded13965348a72. 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/QZWFR2472759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344970ba07d7efa8a176617e2bdd72f8662bf7595d381cbcf001786f1a921b9f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:33:41Z), 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/QZZ7L2411244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c51fd87d7c1c131d5f927efd99686df161edcbfa5d2eb0ee5f9bcbf2d3ebff. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:29:46Z), 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/QZZ7L2409484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebeb20b2f04d443502b7fb04edca18000f96887c66b814f61b6fbe04ac03117. 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/QT3EX2498390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41edddd1b73e30128616f1b454cdfa146071776713aaa3b465759de52ef4db9e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFYX2550869.
OSF ("043 Silent Arbiter: Interior") VISITOR'S PASS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd18126ffb649cf4d5248ff1804fbfbcfe6fc24f97e42a23601d51244370fb34. 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/QZFZ22547016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab1fc927267596fa0245ad8058b61831a59a34d6e128eeb0cc969dc113384f3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZFZ62550392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c19087d1d85937c698318a15fa0c7f158bb6a55648cff9613c656ce5bb49b3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZDA42559292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f14108637b0bddcbb44db11a689e3d5b570a81f26e77b98dc1bc0168e9d927e. 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/QZDA82508471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e79c2a5639fa91d00f0d144e047f402657aaef480ff298b8cb75236982cd90f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:44:15Z), 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/QZES62522239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93bc5353b558df78bcdeadb3f1b4aee7e6e7d170b36595d2062ff54c9bfb15e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:34:35Z), 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/QZES92506013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ec8a0055bd8f4521f7df6a80163dda61f13866250f2656d64c5d9f1dd5b580. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHN62529851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590f3ff4817c75fc7e1dc32a781bb74faf7948d91a40a0ceb109ae6704853b68. 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/QZHN82596193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24608450823d8b9c241b30001c8ba815d64cd9e9d2f4229e090384313261d4c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:14:33Z), 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/QZHNB2595137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b169279696d8a30e0fed235ea16d4e2f55eeed796848855576c03cd2c521582. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZK6N2513676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd7cfd279d855643b15531ad0e4566e3a90d7424ee10d01f7b93c424f366575. 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/QZK6K2506264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131b614796460dc6cb5200727e86061a5929494e8b56cd58398495bafc83d1c2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZMEN2562566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6447f2f331d4e74ee86ffa11e1a00884ba926b761d522acb9b95316eaf914d75. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:25:59Z), 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/QZMEQ2569146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4363e05524ca5d5ebffecc26392f188d1ca716ab0af41d5e9230f82ced08c816. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:09Z), 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/QZNWY2599097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde78a9627978215632775b53f6d34953548252a7f66cff56ea0ec69609ae51de. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTB82517125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d1feb77a6651c89b36107fadd796737ccf16b3bdcbaca91e7a2a8e93b5c962. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTB82515512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8b55ee828096adf439cef0faa9797895ec5429d6764fb92aab94394dd3dfd4. 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/QZWFK2545133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ee623bb4359751088361f82cb3a5cb8f63a96597e9f1a1937aaf919f18e277. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZWFT2533049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26f1ba2302b14ec09b35527ebf3c0ccb8227f2f0aa717747971e6d8fd40a1eb. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZZ7R2567098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36321a7b933e4874e9a931657bd35eadeb92cf5f267f7108ada7a2450335ff8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ7X2569636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05846f29215ae41a1c5979c6098df291798733486c0d0606f4e40d0cb4f54df9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT3F22530030.