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 0x1fbdd6b4041717ac96ff294b713d113b0d9f02ff517809e6fa3c8aad83e17652. 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/ed04a757-75e2-4fea-9bcc-e41bc03f76c7.json and https://artists.proofprofile.net/proofs/artist/ed04a757-75e2-4fea-9bcc-e41bc03f76c7.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 0xcdce725785410c5a9ad1c8e4758cafaf99620b2789647cc04cee54bcfbc12707. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:38:37Z), 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/TCJPI1827029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb300cd44b5ddc712f35df735294464247be85ff860168567ed8342939f843cfc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPB601887727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6708b11e81f207be81bc475cbe3a2b97e50936dd6ca83883f271a64b5f4f4e32. 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/JPB601891843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504ba3af77f12629603bda8fb41728fe0d52ade2cdc3c3eab9a1c1fb20b5906f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPB602063245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ef3de9cf05043644ae7b915546c4046d3843935121edb968a63c8e900b832d. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/JPB602066704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a41676a1a3f211ee215c3dbdbfbf9487096e8176052a81ab3804e25bb65cf5. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:08:44Z), 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/JPB602070186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66426ecce4f330b560743090e20efebe0b0f269b232208da821d74aa7b949bb8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:50:27Z), 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/JPB602082308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4122e552bdf1d607b486614583d1db7114e4d555b64fdf80840854540135ccab. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPB602086846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4337b67487e591c2840de61f8818109fdd10a9911ae7fe4ee152cf6e56a6ae. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPB602087693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dda3596eb428a236613459e54fe00b9d38fbcc99a42a9a0c8f0329b8f1060e8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPB602087692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4128df79a2c8f7afb9970b3a81f9ca094be8c2e33d3ea6e7f286182806329be. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPPO02004774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8470ff71f588b4e29b78e702ea589a49856159177edf58a8cfab7dd8401c9462. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPPO02102101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21519385b93e4ffb9cfa711012c1a37cb3a8bafeea39e660417e4b5ab7b930ac. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/JPPO02102259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd995a14f2cf3ce6132c838961c34ca195dd98ff6be76651f6b74e55b13314ba2. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/JPPO02103535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee5acd4e4a9fbf5ca9c31cdffd05f691fa2574a06809d880482447bc095bc39. 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/JPPO02103856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac362d59f8914c3ef309638a7b64e9348731fb22a29eca83e5af71a5165711a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPPO02103857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa026cb22a68d711ce3ac8c40ab4c65de35be9da5853602ea007a39cb4dd08a3b. 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/JPPO02103858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2857388253e2916a15612b039f5f0935f0b86ad1b9ff0e897f83714000bc47. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPPO02103859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a89cff859b4ab585501f0eb996c1edee383cd7700d81518791746052881a44. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPPO02103860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6803fb63341ca8a67ebc88d00908dae50bb3fda2a7494c1fa923f360ead01e. 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/USA2P2231133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8545060539ff64e288dd0972d8af95f5b3b9169f2745ad9fdd226a1bb4d591. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:51:20Z), 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/USA2P2244289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ad057379e256ac60164477e7c953a6d64cae0655cd5b633f79456067234957. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:04:59Z), 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/JP92N2344772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021ffe1ba9f8bbba30b531818d54f563fec8e1f5210825da3a86490a0ea022fb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JP92N2370516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d5d89bb39448c57e68681c8c642d4c9f14259176877cb446cb4c478e4adbcb. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:27:50Z), 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/JP92N2383505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d5d89bb39448c57e68681c8c642d4c9f14259176877cb446cb4c478e4adbcb. 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/JP92N2383505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc272c3247e2fbdcab2289a18c371b1bbaa54d933f7b45e5d0dfe4b62d3b91d8. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:31:08Z), 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/JP92N2403631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ec44e1a6cec2d20fe4d401d69b12f9e7c8523b6ca2bdcf556b5478c76eb74d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:04:46Z), 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/JP92N2356489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d6cd784600b99cac8531539a8232f26f7a4ad7aed9b60292090849faa9f59f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:03:01Z), 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/JP92N2447834.
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