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 0x4646e4cd1d8bd6832550a8771f832162f9030c74b536d34737eb7c0f5ebe85c4. 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/3e5804e9-510e-4aeb-9255-0d72f1ee013c.json and https://artists.proofprofile.net/proofs/artist/3e5804e9-510e-4aeb-9255-0d72f1ee013c.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 0x93b3b11ad42b74804e75e9b06d083b23ae362a1bb2e9c806af28077ee8741b4b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEYOK2318884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa677b6d8fdce181cb0836cd781fa43533d341a42a53f2c39865440bfc479ab1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOK2318885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c51cb783443260293597a6953fef59090538c48b778998a9affb75a1bdc8b2. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:34:45Z), 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/SEYOK2318886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceca775abf8182cd5d8691dc7b151b5f5f81c2ed2b72d0151279c3934cd0abce. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:57:33Z), 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/SEYOK2318887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2ecc906f51f1e8c2f51e6aa4bc55285f774bd697f8e8cbd4f8331b080b28fd. 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/SEYOK2318888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2838f729144fe4db476ce5d477b462b19f40810d6384dde3c2f2eb354ded1d1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOK2318891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda05bfedc0bb7ee0fdc190db188e919475cc7f969581099d4ec1dbb976734f6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2318892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae579ea5d9b3830e3c621f7904a6a0dc261e00e2db10e744ea46162132002b0f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK2318893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec677000c0c8efe3c694080cb0f317b4137fff49167aed2cd22303f2a699ecb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:20:43Z), 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/SEYOK2318896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7421c33cdb18fd5dd974e2e3555bea70a5e2804dafaf9a550b63ef0200b14027. 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/SEYOK2318899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6da2f274a614de4f677023470512bec7b68ec091568ea4abff576ce2ac2389. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK2321319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac97b256be4453307427655cc1bc09ef7cf505142ec6ba7485952a58d0e2f2f2. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:49:54Z), 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/SEYOK2321320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af86e2ec69bc2fafb3711ca4e6a869d3dd01ea18267b9776adb51391adcde71. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/SEYOK2321322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe156bf1e58614799f926f0a6353c25e199625d5d77c95c320e06cb72039f164a. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:06:22Z), 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/SEYOK2321326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25eaf12b58c3bc38fd4cdb85cd467e5e6bce0805f4eaed493bf08313c7bd1a09. 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/SEYOK2321327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7802ae9160de252d3240b1b8d3382348b7b1993e992a9ad2f9d30309efac742. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/SEYOK2321332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913fb93f6e5f872e082272247c9773f01dac36e36a60e485b7f619c7d7ac17ea. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK2321334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15889f9c34dffd7443e02ebce4992834a2b1b71914f9d1dedbb70ae6c443d8e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOK2310084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9e2410fb56a91d5016355e835564e6972aea7891e11e18fa1fba9377cc267c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK2310087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc04c1efb21d2185302d7d580dcab81e7a6601b940cc2b608847db0227e760a0. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/SEYOK2310089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dc06e4399d141ba37607362a4643e7a2378028c9767e397646b7efb49bdffa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOK2310090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bed6de597159176e6ef0d2bf143131404bf88063546048ad8ccb1b0686b873. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/SEYOK2310093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8befb69a2d8ef9f5d540b05b0eb0d1651db3453dd333816fd9b27011cfa7a0a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEYOK2310096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8787367e6ef63dced96bb8cb2ceababf52a9aadc2a88bd88226353649817554. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:32:18Z), 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/SEYOK2310097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67c15e896565342e857d14a991420c24a6642c9b8caf4ab5fd12e1fa81b94f2. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SEYOK2310098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65283812b4069d5cdd06cadfc32c887834713255db8ac6b08a177945c5e6892. 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/SEYOK2310099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6db78ab1794facf15d5a104d44b7be4d7299c11d18b85508bb8edd5d6de87da. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:34Z), 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/SEYOK2310901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64f59da50578d110160c68c6d6697cd6af161e30d55d491a62c47150d85333b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2310903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fef7b1c7670addc2ab6180cfe620e4b0be026eb6df11a15e79747f2c3010d0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK2310906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03890ee8dc950cea3567eeca412734a90bd6b2e5ba6755f699fe1d83702e41f0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2310910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fcde77dcc303c9613fa41cdcc56e7cc3fa082afb94b1ea9c8361f6124f29e3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SEYOK2310915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860ed516bf3fa73ede6c7cbf0c13b17253a25419b9cfc334506a7850be270f0e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T03:00:57Z), 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/SEYOK2310916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f789cf19fd9a14940f29873c616f26fed50a41fc8bb2edd45a90468964bf264. 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/SEYOK2310917.