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 0x4236b14ca827b7204817b3416811dfc4f61bd9c4f6a0ecd1574dcfb86b5b3bcb. 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/c9f011b6-e80d-417a-96a8-daf435f7a631.json and https://artists.proofprofile.net/proofs/artist/c9f011b6-e80d-417a-96a8-daf435f7a631.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 0x1865cef17237b8f0e8b037cd1a3f31d958f54e8ed2a46dc63bfb98a31b3723cd. 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/SE5IB2263969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd925f73db935a576786bf1d29acbb99b6480fc9d0408ecfa61f78fd6b900788d. 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/AUKDT2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74a5ea980c03bc4306723fe9662f67bbbec0ed77e1a44969f0a76c1db06f9d7. 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/SE5IB2287457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea99dddc8031fcbd753617914fb1b638ebf37983807dcc93fbe096cbb9af23f5. 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/SE5IB2100863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540c38570e973d3819619ec416fa7a26bfc71480ac8b06a77b469ee51909b854. 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/SE5IB2301169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a51d252c348b9afa74466e9b583fc8ef0a13ac35cdfc28750867350eb35908. 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/SE5IB2332283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd779069af2fa38951e7f1501433dbf661800e84e28896437d8c45ee9fa767dca. 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/SE5IB2297995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbb07400b9005c5bc4d6f7ff439355a37e7ffe624782b61f05a84dd945e987f. 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/SE5IB2310611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0181a3903412f89fce7850cac25adc6b2b9f389d6a50b66517229d14fc4cfa0c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5IB2332583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc218d48550873ee4be8f4691649fffce4173af3b581998e3ae9561743e887247. 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/SE5IB2310671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa564785471ce2fe54284ee7b708d04ee2e614904558ade7beaa12eb2448d74b9. 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/SE5IB2310603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112456f24194192362fc0f213683e281d83ea386e572d81043c5a97e5335eabc. 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/SE5IB2309590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc671cca95fdb42b10c8bed068ac1bf86bb1deda1977a9d387ddacf954832dd97. 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/SE5IB2327119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8774a8b261e279a194a1e0ce2bfddec9f26e12f9281ad40df1a8a7446f2c39cd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5IB2337991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad575719b795b8ae9478a9e8b1db3d3853479fd726594737346fba7a8f12f3b4. 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/SE5IB2329495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56df9223e88c75ff7c6d476b02460ab8c2b1bd659969ea592b0f2ca4548a594c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5IB2277169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06c662f77d2b80952867702a31c5d70f3ae4f726b89ab1af81af1c4c71131f1. 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/AUKDT2300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6d404ab8fa25dc6d7123f8b7e5ad3464313bf125e3c93d46140d9beea5da0b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5IB2321939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8540807d080a677fd47d3521f431fcf13a4fe578d762b62ade9880fc31628bdc. 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/SE5IB2257265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601236caee1e425d11c4d8c3bdc4aed926e8c356029923dcda7ba357366a32ab. 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/SE5IB2294761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aac87952740811fc25069500b81fb8e3cd480b02f971ad091383a54a4e0e4da. 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/AUKDT2300317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c248e3f192303e5f038f42021af95214cdd85370e2f7c373283c7e12c931ea. 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/SE5IB2228495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a88aebd3670cdac549cd82edcb4cbc5934cf3b24dc0489f1738aa8466b5c2a5. 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/AUKDT2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51da0e9eb47359de990c63adbb02741dca22cfe8667b4748547d14d0a755164. 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/SE5IB2294986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7296a2f2bde295003d227b4b8329f4ff0cb19d29506de417a079a538c1a3993d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE5IB2000786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9232f9722506f37b39f6a6a01e12ee4ebcb4fa6441eb0bfb86306c8e08bde7ac. 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/SE5IB2000787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61db9b0a3fef9ba9b596c696ea69ec380ee6b9451089bfaaa0d3b9b0fccf38c. 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/SE5IB2001874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8c92c08484956bc26751ef8e18978b653d791e56e6c3330f0e81595590d696. 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/SE5IB2276097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c2cdaa07b6a8fcc6295a3901ad77b099e3ce343a8fc73867f217e8ea426b4b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5IB2309884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f9e7e2650f61a2a5ec85d94fe99960be865ae010187768e19a5b63b4e50cb3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5IB2310687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86a2a09a50daf6b805bca85aa2a6403506237da91db73fbc088ac7d59fd1ee1. 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/SE5IB2321743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f9e7e2650f61a2a5ec85d94fe99960be865ae010187768e19a5b63b4e50cb3. 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/SE5IB2310687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61db9b0a3fef9ba9b596c696ea69ec380ee6b9451089bfaaa0d3b9b0fccf38c. 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/SE5IB2001874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7296a2f2bde295003d227b4b8329f4ff0cb19d29506de417a079a538c1a3993d. 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/SE5IB2000786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9232f9722506f37b39f6a6a01e12ee4ebcb4fa6441eb0bfb86306c8e08bde7ac. 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/SE5IB2000787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a696eaea3b90b9b1e9b7343105bef3d082f2094e3b36c1453f7115c91c4db5d. 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/SE5IB2294929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62364cc3ec9b030355048e18c8fb487d851892158c1cb890ae31073491f5472f. 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/SE5IB2306998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6798c1cae79c7fb49dcb9661a2619c32b1786af5d00b8718a8d20f61b9a674c6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE5IB2294926.