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 0x83da36b2828fd58f28e2c9707e8a82c021f8766b6a4e2dcb89eeb1e1652e6acd. 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/62f1b6e8-f1d6-4d3c-bd80-1789d380b6b8.json and https://artists.proofprofile.net/proofs/artist/62f1b6e8-f1d6-4d3c-bd80-1789d380b6b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xf63974a08b8d4f216fc4c68afdfabdac3b029d1367c42499e7af099f7226e7d9. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:31:18Z), 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/USJ3V1321651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aafcb46ab829f9a11f95f9d8b7ba700488ffd506bfb213517f6fad52e34402d. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USJ3V1321648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9628f3cf0e165bb0311cccab7f728ad4d0c5fa0569f2818270ffffc107fd088e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USJ3V1321653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543708247a58e9ae5868e63701c4c8aa8944f0f6908a2419a5a9b05bc28ba128. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USJ3V1321658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8954b1c4be954f868819b7bc3834591373589b35aa8d701973f104b281e22d76. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:25:06Z), 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/USJ3V1321662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d0a490982a7e534fff4fe2b25fe3a10c91e6dcd4985b75e066e319e2879f05. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USJ3V1321666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2752fb3d4865e45fcb2fecdd225decb6746226d22101c699b482f966b5a2d35b. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USJ3V1321673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8f115576e95ab3828fbf3d2807ca477b480e546fba73ed2fa66ebb67ea48a7. 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/USJ3V1321677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7206305855f9c00db0887cc999b8ad3ef407ece0416e841b0acda8f9d08d4f. 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/USJ3V1321678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44bae873b26f99ce5f6a880cb19edcdbbe736a140578642e7f97f6cd70bdbea. 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/USJ3V1327624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05619e3d26cdb8653f6ddb34a6867a114ad18ae25108ea4e2258dd312c40581f. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:37:51Z), 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/USJ3V1327626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15817d226aa7fc8b3266ccacf2835ed0f246e8bc61430d361af0d5144bd84334. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USJ3V1327628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb700b0e97ed8b025985a74173c1ce2756d18d36c6a277d43df4fd7374d9afc3f. 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/USJ3V1327629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75edcd26636694f4aec4475021cae6a7b42c93f4f8fe158ba968d538e5c6cc38. 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/USJ3V1327631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8103939377dd40f18cbb2a50b97b13ceaee0e17c73a39f6c9a17d40284fe3f9. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USJ3V1327633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54967dd05d101568907be8ca5030ba403ff10d928ea543e578be8214c2a6dbb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:25Z), 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/USJ3V1327635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4b37557a925c716b7b6d0445603ad82d49b597ca8a24f69bf2f06e93444939. 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/USJ3V1327637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cacd344ae0215e3e49c19dcecfc641e204882d48b8cee9450588b8a00dbff6. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:18:25Z), 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/USJ3V1327638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3273cda1baa8ef0370c746d6c7e85dfe20ef15cbfb5060052740a0b438504d1. 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/USJ3V1327639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a5335ace595f0f44584bcac3670bc182df203ad4802a09d34d751cc3b0c265. 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/USJ3V1327640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fffb964a5b6688f8a5e0b4f3a99a2dce5f064ecc8b5916a527cc1f3e49ac748. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USJ3V1327643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff95e32c1237d96878ba471eb818be2efcfd074f5c95158e5e1f04657991d2bd. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USJ3V1847460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a7efd2fa0933d7b21ffe47555f99b07d10beb4750fc9a2d6def40019332d70. 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/USJ3V1847462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92afbfed7df63a149a867cfd75fa5d5d0836469d1ca5c73138dfa6de8cb7912. 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/USJ3V1847463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269e5911a887bed2f10ea816f6a640dc8cbdaf90e5212483fdb5540014844099. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USJ3V1847464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775e5241435559808f346d5d7674039052e03031112c2f09d88aec02a41ee776. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:15:21Z), 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/USJ3V1847470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d94684fc770076758fb44af6bb0748614ffd311171b03a3877b94859f197fa5. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USJ3V1847471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9760b548f37e2da639d7051be4ea6ea023df0c6f67ccced8bfbafa9e6e39db83. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:30:25Z), 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/USJ3V1847472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec578f7af5f941855154b720b8eb726e98242793df457c560fc097cddb0a71a3. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMFMF2119880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb804a11194376107fcd77f4e4d5bf372175d8722dcd4478e9b8b740e279e08c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMFMF2119881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c35f55cd2ccc5a2a13100aa4adfd0946b6f78c5d5ec988fd644be1ba759252. 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/QMFMF2119885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d38a66efe7375f122f8941834e3325f8e06abae79f249e597df1358bdfda72. 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/QMFMF2119886.
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