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 0xa5b10b5f624851f15cc2bef16bcd56004325559015e82f6ef4a542fc5b19a500. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/305b3b52-4bfb-4901-a6aa-68e9432fb390.json and https://artists.proofprofile.net/proofs/artist/305b3b52-4bfb-4901-a6aa-68e9432fb390.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 0xaf3e6d56d2f1fea7f9fe3cfc418d0d2fb86e597502ae89640594b611e1a74b2f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZK6H2008749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6a7cd31d9f5738e8ed974ee628da90b06eb5965d94c9e14778b60adbac0424. 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/QZMEQ2031765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4be4f207c63632e23c37c1ccf194677bf6b90f89364fd582b8c1edc7346ac0. 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/ES64E2206047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb093248675c6dabf6802e6d4845e3ea6dea5b6075a70e033ba0ca4ddfbf9fb8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN72329427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d274bf298a8593cbc7301a814724cde6b32f75abedd8ae9df052fc0b4f7393. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:55Z), 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/QZHNC2342810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492dc2f20133d0293ac57b29af65045996a0a3288f0e36684a5baf387e5476ec. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZMER2330358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb98352b29ab328a5fcd72f328db8c079596ad9dbb0932853f3c7e163678609e. 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/QZMER2373172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726fbbf9207000221668b158b5a99167089b1eb34292d9f1697221b8de82971e. 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/QZNWS2375805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57f813a87ce4659b725ba56a5afe23d28ce99cd20920b2e872e1c666a89a5ef. 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/QZTAS2302024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6a201db57318eb27d43773f5ff00f6da98e483cadc9a65716f728c0c6a7b32. 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/QZTB42367072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7198a6f0bf1781b9acdd0fcbc98b82cc18b567cf8e26e7d14481707f8dcbf2c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZFYY2447394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea62117cc08cde578636b26181cfebc2fc0472db8227bb7c9fb8d3c294ef837c. 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/QZES72405453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d99e333987a9dc9f28b7212cedbde98682dc11aae0c5deef69756ef95a44270. 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/QZTBA2440484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda77565405a140cc8fe01a526255074f07ea88b00145eacb211f980e6ac57c08. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:28Z), 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/QZTBA2440891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa9d42b0c7c044867ca6212ac30a67047bd39de193661301972fdde67eda7ff. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZWFG2423514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff1d93aae9cfbdf193b440ae8022bbeede701c6f39a32a0c6b7b4fc3f37b8bf. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZWFN2420297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbda56a4f4e1a74f3ae8fe75c4ace55a0474ac29abff71d20620eba2abf8b91. 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/QZDA52518957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031a611d626f37c3f70a3de85b6432349dc52a7996ce021eddccd8260e2fe6bb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZDA52518954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e0236b080f21f86852c51696f090c44ccccd77d3312786323cfad18fc70395. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:55Z), 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/QZDA52518960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06dd6085e8a84a3887abb2872145f0c5fd3e308a4b7477bcbefc3aeffbd7ebb. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZDA52516612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9bdfe5c717c23263efe4e637710b51031b103276e7c680eaf068a4192e6803. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA52518968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd471203112bbc8992237460a6a1c047dc0dcf6d6b4b5f9cc9f2c4eea4193e9c5. 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/QZDA62552851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d55c79ecdec830302d2bec80382d85759fd7b79a4c2364902d19d50b59b221. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZDA72587499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ce8ef111c1daa265e91f7e91564a7dc7468cde1cca2fc45fd60d92ff0bc783. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZDA72576331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ef61299e214e5c1862f8932bf5ea4c74503a838c7ff403a224d9dc5c476936. 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/QZES62504912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97a965292dd15a287f5b92187866442367605a0a23d702f6a4d2178e2d188d7. 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/QZES62506959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c6c0e65d644fe60aad8c4931548e1ffae23aac3e42beb48ae190b21b284b76. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZES62530807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0116bfbae9e73acf208ad50da36a7b96972e9dbc40f1156ece589954c6d3d73d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN52561923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a61f7f59dd70a17a235aab662575cb3c2547608a2ef1d6fa5ed23cb00e475a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:16Z), 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/QZK6Q2547250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3a49bd5a0491ca0069532aefacfe800cb58b994f9a74187730dc9787e30d01. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:16Z), 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/QZK6Q2549121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846448dca6015d4b17647e66a19fdd899be43e311c9a70a8b03593eda26fbc17. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:32:17Z), 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/QT3F22514771.