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 0x4961d22395ad22ccd0c434a8936940d50bf859212d4887de2115493d7fab82df. 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/e5bd60ff-9755-4094-abba-fe1e1ea2122b.json and https://artists.proofprofile.net/proofs/artist/e5bd60ff-9755-4094-abba-fe1e1ea2122b.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 0x4c6f718c5954b77c6187ab84d967a221c6ba1acb3358e558d47584fcba624843. 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/QZPLR2369832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6ddf2c3c5eb12622fa8782e0f7a7c476d606f0af7347916f23f24507f2a492. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZTB22310889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03e945bab335157ea3119f85e72cde08f4ff9c4ae66b35f75d0b882d9a73610. 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/QZWFK2392759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e1d59cbf09dadc2650a2330683636fead54c732017e50a668ee10f8388844b. 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/QZDA62472640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ebdc41c02df986e93a43eeac6ce7128e2ebbd09a38f881b2a3c87af534c9cd. 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/QZES62411910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00358dcc81e0e6dc3a98b039a47f5fd963c43297faad6b68468dad431b67e09. 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/QZMER2490806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854160b3655bbfe55e4e06d48bf5d763d16d725548afe57a9e53183cc44c1c66. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:46:30Z), 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/QZTAY2444482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa089d65b5bd1f37e9955b4cafe6ebe1f0af5ef2abe82472aefa158665b653d9a. 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/QZTB82480157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5600542a1d2d256da5638db716ced861c0e71be8b99990488e67291d9a2bc46. 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/QZZ7K2450742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41f489cc82d55d5b49600130cdddb857acbee2d27150afaf0e9f1d722a2ff8a. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:24:15Z), 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/QZZ7V2423480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc084a9bcd7c7c14f74e054590713f7426998c94e8551b2215866c03d0e37c4b9. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:13:45Z), 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/QZZ7V2423482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97af95c9d77fcfc1b4ffa79301e2808625dee4dd1efa541a833236d925e1baa7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:24Z), 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/QZZ7V2423483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6797dddedaa5bc88f903f2648b5719e5e8297a89161e57c69691f8553cc3e7. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZZ7V2423484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb01b89730726d4be6c430848ff84ba97d3ea24b2184432f6f27c1ff68ccf62c. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:24:44Z), 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/QZZ7V2423485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75f69ced135694e865c7cf4a010fde494a813e7efde95fba331a80915d8cfd1. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:36:40Z), 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/QZZ7V2423486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846eac351ea3b79aa052f2b8b4d2987bad3f07e4cb55192fb56e8a3a63dc35f7. 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/QZZ7V2423487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d2599ec607d40a437f97a45d38a3041803c83980f1223a7011bd3abee11f91. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:57:42Z), 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/QZPLS2570011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550c089331ef119e43d0098f7fffec54f192cf4478548df4fc51123158380abd. 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/QZPLS2570008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0a6a91dc97d33547ecd81a3c47b9b2361ea8119717bb618dd28b8db01668d6. 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/QZNWW2516016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696d29029881ea1dbca58798d35b1064d96afba9d00c56341fb5ae725e26d6fd. 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/QZPLS2570009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d2599ec607d40a437f97a45d38a3041803c83980f1223a7011bd3abee11f91. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:49:52Z), 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/QZPLS2570011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29443602cf7ee2e69e9fc34cfcf42b6a6bce6a40221810d8dc235a7335f765bb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:18:00Z), 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/QZPLS2570012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3887d2911aca94b8f6bcf9d5ba0b095ed710eb9805eee6cfed146a24ef99b9ca. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZPLS2570013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05a2f278ffbbc5d6a5da78ea15ac10ea5c0296ccb7d492d547486ffe52b6f19. 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/QT3FA2574303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0456682e2ae165a7235e27a42b642bd6b9f85751bf19a368b1f0ad3ce00bf46. 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/QM4TX2570669.