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 0xf9e645f4823e74f80ad798e8e2ff57a2bb561b15744edae8399cbcd69bedba55. 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/a3e21552-9653-4be8-8b4a-5b0961c967f7.json and https://artists.proofprofile.net/proofs/artist/a3e21552-9653-4be8-8b4a-5b0961c967f7.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 0xf18c43aa241d13b54352107f61d9fe7752b033d0a723366e180de67de46d7d65. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:39:22Z), 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/FRX282033168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e70d7df475e2c5d894e4dca2bf5dce74b29d6f481ef1967e6204ba19078cbf. 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/FRX282033169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554557af21bdc05b9f44c5602ce4b519b3fa77539fb3cc5834077ed557cfd3cd. 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/FRX282033173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d7a675fb2d57e6aa4efa40decd32c9feebe5011623a16eb77ed3087e5b6912. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX282033178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f57f5fea331fbea5b6cb5afac7628b0213ca1a81e8524355665b60ef7b207e. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRX282085247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dd780d87ff86f78dc76e141b575c82f9fc5fdc78de2e64053168ea0b58cdc7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:53:41Z), 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/FRX282085248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4461aee7e2c8aa84e4a2d336599d0cf5475c25dd725ecf0247c8ac3b0c155c8d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX762019138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e20582ef43a81a88d01fa6bdde858b516d09c8419400900b62281eae00bb651. 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/FRX762019144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a048cc0c65d0df4dfd4578776af5b5980bb34d4ba1eb010068735b1ef9fcef. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:42:22Z), 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/FRX762019145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4fb5136d2a058b54851a3484ce0408cd8552a8c9163fe71c521315f5ba0769. 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/FRX762019146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b21b6d48753123a6f513d83eda5dafcdcbf45a5f2e0daf1ae9f4e7a58732ce3. 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/FRX872014332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433948af54fbf46cf44c6bf0e028c464fa1a81967f02d5ce5b67295adef0ad86. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRX762019137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f69f6042e2220d0a75b90e6a89e0e51dd8d2365f9eab13eaeff02a39b421be. 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/FRX762019141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc80e307a2a617953a8967ff705075ff5525cdf40c43b66c9c112ba9c5fbd01. 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/DGA052018544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab386bc1ba3ccb5771d3be309b8c42aadf1a5180714f1bf39ac21ad81fb2bb9. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:13:54Z), 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/DGA052018545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0142ffa1517cc96b4e7ba207d1f987eb474a72f4b33b52984438c28d0c83c430. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA052018548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687ad1932d3e80563d2ad43fe48787a8035eb2e47796b440e2a346c074eb5079. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:29:41Z), 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/DGA052018547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3db8fb5535b87c58740191576df3bbcb5d52881728151e48dc8bbb2e09cca4. 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/DGA072143535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf834fde61344e15ef1c64822310438a0d3e60f742f5cb2f758c417e71ad8abc1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA072143536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dde58a19edcf2377f418b89eae4efd3ffd7a7af422eeab1ca6d7f450aff1e6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA072143537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed764cd6be830b2c328bf842f76ee712ab3ab7abb485e676e11b4a8debcac201. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/DGA072155732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8529025dbb5743929c4744371680983797a4e1ad566fb5586c06d9fa806298ff. 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/DGA072187149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4865c894fd380adf2ca2e8c7cd4bc5c27b207cede7d0d70fcf08688c1ec3717e. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/DGA072187151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841dfc04ad5ee51c2289511f6c7025eec553550d9945ca911f8aad6c87bc207c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:40:17Z), 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/FR59R2122378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cfa82613cdc8f7a890e2c4005d48cbf0f7e00cdbcd4f16eafe32e1ecebd158. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:30:46Z), 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/FR2X41869626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c55b12ca9c5d12f66b314889876f44682e282134dbc4322d57063993100b08. 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/FR2X41869630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8e3fb22edad9389fe7b787391c7f87cd2a259914b4b44b6087ca397088105f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:50Z), 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/RUAGV2406092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fd631675960dd33f2e141c934360b522a440681ce67aba5c6a92ab0ede4923. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUAGV2408290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c3b38dca6e1275071eea0f26678641551dfc6df5cc36d9244b40988b876826. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/RUAGV2514669.