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 0xc3db8a315af1c5554022e3ca7d3a3c2dd112f3f1c7038044aa2698f7de89939e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bfca797-25d9-4d71-be71-a092850f80f8.json and https://artists.proofprofile.net/proofs/artist/3bfca797-25d9-4d71-be71-a092850f80f8.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 0x1a6e88a69227116725646250ea5852100ea6be6efe0c5afd48fd99b45e936a8c. 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/QZFZ42566092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81412feccc7446b6995b979a92d32c9349d507a7bcc38a5379a582d9f3027333. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:00:43Z), 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/QZFZ42566094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979589432468fe96d9f9228fbaa9c608b44b8c72f6d0cb5ebf31388828ef15a9. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZFZ42566099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0b1d55dcec7fe8e919e0bdeea976e19f5600a90b66f292aaae5511678fefc6. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:25Z), 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/QZDA72586528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a79c6f6fec5c44b527d9a3c03efec5a5e562c1243b84a667490a80bb08e771c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFZ72532492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f8e212f107b3aa0d352f40448d591e3d28698bb5aabd55e57bdffbd2747be7. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZDA62537308.
Reiker's Monster Manual: The Hunt (Werewolf)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10efd6d28ed2b49bbc478d3161859b7f10eaa8c00b072c7cf109d841c9d271a9. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:15:30Z), 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/QZHN72521670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e03f96d0a257f624842a406b2e64b004495c686507ee83f8ceee948abf6bc8. 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/QZHN72521674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2698ec0d84c5e4063089a8e74478507ba1de732197234d9820dba441f2b16940. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZPLS2599681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3873bcf78311905efe30f2e26abdad3f67edf44deb177a96ea30a19f05d1a50. 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/QZTAY2544837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587158e334045cd1149c7d54cdc6da729ca9e9e785263437cb3228505d11bd48. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTBA2539245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968117112c3bbd75a1029c1068879ca825d0502c49ae11ba32a47f2848a1c35f. 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/QZTBB2524686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612260054b3885779b02c8335acf94f8355ce7f826e6c5badc353d0a87695f9e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTBE2529338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d1940baae090ee3771f3ec2d93787b9283cf57ba15ccdc0f89a4d5106b7efd. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:10:12Z), 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/QZWFM2514223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b8a1dcc15627652937b2ba4a37af028d10bee60f051fe3e4d2605617cce92d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWFL2516165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ee61dcec82733740066ed90340c32922687cd016536d1014de58c3807b7f65. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZWFW2531141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b60ec5065ddbc88cd2baa56a1cc106d9a448dd426a6d6e1dbebdc1d86ebc9b9. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:20:32Z), 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/QZZ7Q2527481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858e742a665cf4ca48024a6515091c278112545bcc9318e7f5907372f6052b49. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7T2505011.