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 0x42c4c8086ff2966d363227b37852b6ddb8290930eaf6b5e9b5bcd69f982062b2. 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/46392950-065c-446a-a734-f4a57e09f54a.json and https://artists.proofprofile.net/proofs/artist/46392950-065c-446a-a734-f4a57e09f54a.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 0xedffe14469f82ff992a91627cf794b3e985b6bb6044792a23b15cc8f37a7c19b. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:44:48Z), 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/RUAGT2453150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e9b4cf006aa572b808c2e74e5cfc0879480db6d240251c831f494fcc43127b. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DGA0T2427880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6088b96c47802517c2f889d6cbf4c45f258a892fee3919ca5815cf4fbfd85433. 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/DGA0T2427881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2936769be35f9eb9dc834f4e2ed459de87a3f62ce241300457d8dbaf04e92a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DGA0T2427882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94eff621cb9b5638f21273f9c0cbd1b474f632a1698d1403121126014100048. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUA1D2503452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0471679926f35cffce401a6f9be4d89675d1807472a5617113b0404f6a8e474b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR10S2569058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260b811ef2c981c8154a0d716a1bd96d04a16a8f3c29221294dcef9ee549dc2e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR2X42504408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b15de01ede98ad8c1445e4439a0fa3abc8a95d6ce7ca20e0d1bc12327abbeca. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/FR2X42504409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad278a72a91250afb29da9a19633f8d59c90f2dd206042d086c35f447532f084. 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/FR59R2525119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a83545efbd9de3074d745f2d5131c08d642368080f6cbebbdfd4ab97158f5e. 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/FR59R2525120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9296367b6e6baa710b13ab5cff7a148b7e8b4aa9f7daadc4b3ec8dd9de1bff. 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/FR59R2525121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a55c7cf9e9860f442d48bea278a7613e744b731789559f5d6a7da52a4593ba6. 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/FR59R2525122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644b248289f8edd63d3d630205dd59c90a7585e276614515baf97903d1a5ec70. 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/FRX282542954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660d716290ef011d4a4b7c01782cbe2e2b96fff19ca3c9fa74f24b0f9810f9f2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRX282542955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61046929b29727218fea65d0623fd9284034f09523e9607aafb897b5ad49fe0d. 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/FRX282542956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f45fac577fad4902d8e3a098eb464273df1864a7831eb75d24966b8486fbcb. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/GB8KE2512908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a5fea8e5bbe7b3e02cbb278ac57a1211f40c567486927d62cbb1a373eceec6. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRX282599054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc3e70a969c3207f064aa8152f677192d3480fe757fc36a9c5cf58c5c1ab067. 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/FRX282599056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93be78b49fbd770386d91eeec505f1af7c086f076f52ac49b2a6185c692eecc. 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/FRX452543773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae267561c2dd534fed2f9f1505f70d60820cb496118fb281366a6cbd25356996. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX452543868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ceeac9c0f6c3b81c44554cc2f544bc4013c900f99a93380c76bb69c8d32f0b5. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX872520629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37802d730799af5aba463140eaba4edb961fbe192f80d6022175e2895d64ceb. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:21:23Z), 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/FRX872520631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37345e0cae5a4755ec083bd1aff2a9bd6f9a8a4a372c7f7e5fa5dd9e128106a9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX872520632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f5e01ea57075c81852f2ac6d48f847232b32f292a9659742d16d6065fb0aa4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR10S2564115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e6ca3bba55510d7e08f66fe91351390dac60ff15a069fe3454ad05e9785a89. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S2564116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebc6c552d167dc94e974fe3a3ea75a050d2eaf71f937cabf4e278c27b5b8d3a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S2564117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e18140243f00f3b46e8bbcd3583b445e8e20e4ea2a199137eedfd26557b806. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR10S2564118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb5562f900650a061a6513b944ffa77b059bd7d1c7ea00aca013126b7917eac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR10S2564119.