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 0x253860e4bff60fe52cb4fe6436f32383c176abc9380784b496575f2930461998. 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/80beb7e1-733b-426a-9c6f-6954fbf6f8b6.json and https://artists.proofprofile.net/proofs/artist/80beb7e1-733b-426a-9c6f-6954fbf6f8b6.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 0xfafdad447ec693922daeb702a55b605742e7fee2807d566fe9877db62056b07d. 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/USHM22023266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7def3f04a3b6319e29cde56a92d3f5f9639ff1993d174b959b22f2722a9e9a9. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:10:52Z), 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/USHM22023267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7ba231dc244e6212d5ee4594c8858dc5b0421649c62322b4256454d9f3e805. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM22023270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c480e4b3450d3a52c74c8e8305223f2ed9d7cf10de2e6aec3b28469578f3142. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM22023271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b57bea360b8d14892eadac8c1aeed18dbeb67e6a35f263d573ed4d0e3e80b5. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USHM22023268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08c45325c1e1e09663159db2ca7490e61359c09200c207863bb2f77ed32edf5. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:04:19Z), 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/USHM22023269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2d35ee96c822d6c055e056f6fdb2d321078e5cce3bb3f26120ef709752bc27. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM22023272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629c88cb0eaac6e0452b363778ab3bc0a96d06c2cdfcf17057d469f6cff65f20. 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/USHM22023274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec637ecf50a04fd9e3a0ada107b8bc052e982aecdeac02a155fa8dca392a2f31. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/USHM21916036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c2b55c8469385548c9bb86625d5f3df2de5ecb80699998b4a333684f09ef35. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USHM21916037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcaab6308876e9a39f36f3f56d575f70bc680c3cf5b1d8a8db1e6281959c2911. 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/USHM21916038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e39b441cfdd62908f8be9775ab21c094a09d0bdc7dfbda6df83a1f75cc9f5d. 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/USHM21916039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20259a6d65093a1f7eaa42bb00e51a846e761808d5609544787de5150458513f. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:40:52Z), 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/USHM21916040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8102c30fc5bd2c3d02ad9f1479b17688310b5b9d8a01773c60837882bce4e2f9. 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/USHM21916041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0c1c223434a24f5deede1a2cfc0f0568957819140a07b07370014cf1bf5e60. 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/USDY41713000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898ae2ab6cd0f05c6b98c39b3c99bbf0d36dbe9b630ddc59dd01b1f697ee89e6. 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/USDY41713001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de5445c90c22f46f3323318ce82014224a9a453c1fd6239999aaef52e7dbf86. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCGH2242783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8231cd1b01f08957fe4bc5a4bc27c07c390188149f9731d9995958b4e0b1627f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USCGH2242784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0788846d9608e906ad0c1c7043a5dae41abb2d8b3ed000c4d987bf99eb0cac1e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGH2242785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f022332a2f821c34b468f4dbf5f97d498ee3946af58ae5e4b2c328c688d6c05. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:27:03Z), 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/USCGH2242786.