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 0x5cdcabdd65fd0cf343ba3e7374953b16fae6753b6ee6083d883be3bfee9fa8b9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5223633c-4ab9-4275-a405-603c862cb179.json and https://artists.proofprofile.net/proofs/artist/5223633c-4ab9-4275-a405-603c862cb179.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 0x9992322156edff8feba46584ba612e072a47c5bab0ee4c556c9436762f63434e. 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/QZQAY2449890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c3730b39055d984f86896cd9ac7280df23841b17ea0c15b568d2522c3214fe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBWUL2483321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4136db000e1ca2273aa0ea8727d42d0677daaeb3258e8faaa92a26fbd251f7d6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMR82200374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967aeb646ca33697cb7e907b905ddc34b51b39ff64687be6711b40ea07002762. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZMR82200369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee8fe9716535e0c39e19b850d899893bc847cfb344f2e275f448fb17d512936. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMR82200366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a0108c593ff47d67d45165b3d8fa0a63f9bc4cafc97536e69de8092e15346f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP2473831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0541d603498d2caacb6c9b56df33158eeb4c73231142a5aa2ad943cbccea31. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAHS2326429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbc36fc1ba7eb861940a1573bb90b924e6d895d8275b9cc3b76c9187b99b560. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZS7J2342359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c4d62af2610f90735a52e01a53afdbfb582f53302741b02b841037ec53d598. 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/QZSYP2224301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e249ac438b26cc6727e3424e926261630d249044894564d8acffc11fb9b96e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZW9L2414266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bf876e1834248e9e23e546f003ab66927bab43fb04080ddebfe14f30597653. 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/US7VG2550598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594f60a387f66e6b6c6afe2cf218ff9e5a01a61e7785bd2ce742753b653cd289. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6XW2411706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062fcacc5294acb96654256c68326c2da8b97c17815403283bbd2c18d971bc2b. 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/QZW9K2499694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeda6ea056dd871c72d55839c27e9c2b17398d9a2e69717ebdea3739ad517ded. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZMR82200367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e28ae965e77a3dbc7a1e897df3fe5fd3231804c515728433aa8b0af68828699. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTPX2424083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045ecdd6f14442f5cf796d092aba8a3b7c3b2b9106f729461e48b865b75f26be. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZQAY2425625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda34ea0555c768e90b9dd4aa2af0c2486c1cd694d0c730bffedbf513943e8f97. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNJZ2470808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcc82ea3a8ddea53dd3dff1f0fd5a936651cd65c34284fae9bc67eb3c697191. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWDE2435895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4eb3a418daad326f4eeb7ec0d0cf8418d5acc9c85a41347a0cc86383d86589b. 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/USLZJ2438144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7b452b5797fcd2c5249e1034c58006cc3cb8bccc82cfa95136e021fd2c8979. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZ5FN2493880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe211874f29f229172ea77b201d502784834310c673ea9288ed87eb7e421b2ba2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAHT2328995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0541d603498d2caacb6c9b56df33158eeb4c73231142a5aa2ad943cbccea31. 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/TCAHS2326429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100a8649da240b8e8dc07df6dd305f98b922abbc5afcdfb5cc6a25f57b2f9270. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWDE2388734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ac759a4d3750f53a9a6e0bff852a77c4410645de0e35b206cb2c6168accba5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMZ92551548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e4bd1bcaa526faf62568125beda000c95548b97b40eade9c2202e722894311. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMZ92520210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675e8fd10a12f84368c1b99b4beed766b89cb36440e75a6fd3426ea14962764e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNJV2432501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee8fe9716535e0c39e19b850d899893bc847cfb344f2e275f448fb17d512936. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZMR82200366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510943216b870d7e598901d16bbcfff530511d959ef875dd5f48f0bba7a3a6f9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZW9L2331349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe710b4667a8fce2c6dfe93b3a3bf8c70c641487f15d454c1f1e43f25b4f084b. 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/QZSYP2477630.