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 0x16c0c7572fd1405fb54fbf347da24c76e012a2c1db42cddd997f0907ee89bfb9. 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/aaf15a71-c9bc-4cc5-a792-3e02b953ba81.json and https://artists.proofprofile.net/proofs/artist/aaf15a71-c9bc-4cc5-a792-3e02b953ba81.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 0x22364208bafeef21241683230c6e0a4ca6af3d5f507495a581fedb2f2f3dbd16. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZ7S2455060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036a5df300cdb5bd7db6f60f4cff73040ed2e0f54fcf4e2469c9c7a108f81adf. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZZ7S2497918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25f8784cb6bbded97f61571788e4cb90c238d91462e79f603e8aa7ddf83baa4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZZ7S2497920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7861ab245ae42fff2fb22229e5345f46a4e3f0ee85ef46902963daa36617ab. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZ7S2497922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edd4bc20aed742cf161934b26cf0381417e999ec2df0297c39940238b3991df. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZZ7S2497916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f9a4d78e54bfeb3e12b3c58e5dc719e74dbbc91dbcb0932a476180cdf29b2c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZZ7S2497924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cc4bad4d2f62f588bae4e398a6f78632b0fa9269765f96b84fb44e7dfeb23c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZZ7T2432208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6ed6dbc0d0158a207ba2d0b29e7acec17e3b2bb65d4c0e92563213cf9b0aee. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZZ7T2429218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f5d3cecc90412fac380f660bebfba77a0d781548366147af6e934e9a191254. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:58:53Z), 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/QZZ7T2424169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fdb16d6e9e2f1012eb1cf4f87ee4e999865af9a2a0074a5a36e3488e5a762d. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZZ7T2426336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b45fb1202381a5e147a217c9983e74f4a35e55997883cbd26e91bfcc17f048. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZ7T2426334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724cd0b0bae848496debaa483c439c456378035a943164fde707b52dd4c6b675. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7T2490264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de1b4f3e34fff4e764062ee272f0c422a375b87c8f8c08c9d6522d11c213426. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7T2488328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79afe14f09a0034532d04d35349c6f84e2995bb26c1369213aed6daa8443232. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZ7T2486922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3962dc2344a4a16a82aff79c68693b72315768e7a0fb44262764e79be4b776. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZ7T2486923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d868c1a79f4e870832371c7ace736af7102446023c4827f01690eb23a0ad48. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZZ7T2486920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316aabebd494ebbba34664a7baadc53a57a0f0c7775f18e15e4f64bcda0c2fe2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZZ7V2439539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dced267f069a1766d728e19282b305e970f09938cb9485cc398a82a5148ff96. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZ7V2439548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33699605dd0ca71c8f787d4712e58031d931b142a1e41a08307a56e8a9c75be9. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZZ7V2439538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7742c074644896b3461ecb4ca7960a4acd085d8d4953ba9fc620d408a8debe2. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZ7V2439537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72053259dc6e9329c79583abd89343059bb97e3bec275a87227146b52cb93964. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZ7V2439536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7d03d3896811723a732192f8acb9282a7f1c8ba96a2f30d4d0b92987c8e8e0. 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/QZZ7V2471582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fb0411e421d874390112d32dc287ff69bd6fcff73a29286575fed7f42d6f22. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZZ7V2471587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f2ba72e5c7d79ca1b791bb8450960684e6756c086c8177e38ebe49510c4b0a. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZZ7V2471585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0daba914f989e57ed70e04067c0544829e1464574a48ec0f1877cdab6cd0d9. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZZ7V2471583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26970adf35f8c9b9149e35d77d1e17fc80dfee0b6acbec4897175bb2953cb672. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZZ7V2471590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfc41984953cd1cc3c98d56ef8f76db7b1d0b467bfe1b5d8ab1db09320e38b5. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZ7W2424719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904cc38e2ebaa39ba3f7857b51f8f53e8dd230ca1c191e9226141fa92757f562. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZZ7W2424717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f77a5d9efa27d109b3bc1de3ce6f06a3bb5d7aabe9de972771c2f16635e028. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZZ7W2422178.