thumb|right|The Seigmen logo was drawn by Kim Ljung, inspired by the scorpion necklace that fellow band member Alex Møklebust wears. Supposedly, it has no symbolic meaning. Seigmen is a Norwegian roc
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 0x4ebe9b2f9057a6aaac5ec8cc0d651b30f8e2faa13c7ac5963c2a2bde01fda810. 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/14327227-cdb4-4014-801e-39101ce1ba84.json and https://artists.proofprofile.net/proofs/artist/14327227-cdb4-4014-801e-39101ce1ba84.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 0xcf9f142bf72c0ae195de3086beee756a63c6d36a5f7a4c091bf119c406a4fb13. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/NOAAX0700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727be4d4b24aeb672ed58f64bed162b10a36e2ac9f9fc5fcc374f9cea089826f. 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/NOAAX9407030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e98e94fa9392fcc149001dbcf25f8964da63eed68d2f7236635b7554fd82ca. 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/NOAAX0700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8c34c487c95212f7bf9ad091d48cad4838d5a58181072fb341d677cae7d0bf. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:59:10Z), 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/NOAAX9407090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aee51909a5f8cfec7dc6ce038c209dd396256bd6c4a1ace89b3b99290440b00. 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/NOAAX0700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83ff1525c3a400076c9d28d800959aa91e54dc1964924c95cfe2eee629800b6. 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/NOAAX0700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137df2ab37a1baf64f1c8cea3558bf79cb90ff10b63d54d8cf99d0d524eaa4fd. 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/NOAAX9901010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4195ebaa617adf618070ea700c89b7b8ec1c9253e9cd0533d487322c89416b4f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NOAAX9702011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a5462ca2e8082e57df2f3e721d1dc020785e06b8730754784ba3fed7d60b4e. 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/NOAAX9702041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1373dea25da9880191c9b85b50bdb96580debc1235ba94e1e288c8163d9ad342. 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/NOAAX9901030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703d1f5b3a16011f4d4ca4df0e3f76473a437ba73e2243c1d669ee797ed7ada5. 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/NOAAX9501100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5078a0bb3ded5b7774f6dd227d4e890575be967ae669c89294cd9d9e65bbc531. 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/NOAAX0600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65074b62c1739a1d3cc7b964026f74de3a0fc29984a76cefce3521171cc63b3b. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/NOAAX0600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428eb060d8f723fedba48b577379633d4acd7586a0d629e5102862c875f9e2b4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NOCVC1560014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cb84e067d49d4c88d6e2b1286e2f2cbb07902ec2f73c184e1dc9b7392bdc36. 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/NOCVC1560010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00168e518e911e79b0872f3bbf23a0f4e7aa4338224584e3f04399447756dbc5. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/NOCVC1560020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af305b40709b459f7284242e6d6ea9f932d1a91828c796ae644e99c7d3c8be4. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/NOCVC1560030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6569b3c55ef45b8c9109be9c5c462a442247f5d018a002f70cc9883b9853a9a4. 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/NOCVC1560040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d22f59979224c3bda3a9090f8e314cf9896b59a969832f7f472043a9f91563. 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/NOCVC1560060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b4d88181f85defa6becaaae89546bae2e99be8e72ec26af4c037b5dafbcb0f. 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/NOCVC1560090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43d302cbd3bebeb8a99cd217ec4c8bbfd61d94031642d8424c0daac31186071. 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/NOCVC2474040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2970e3e9657d12ee7c9a2af63a748d9030e3934b13c1914ffa7879dfd039bf6. 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/NOCVC2474070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3464f4ecee95cfeeaeb58285f3e1c15801eecae0f72c9faf3f868a942f8f21c. 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/NOCVC2474080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cf8880e049ee98b1f7275a882556b30b177e989a6b43ffc74f1a51aa1f4377. 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/NOCVC2474090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadee8bcfc5f2a234b3d816ad60f51e373f0a724d1cc84d8bf6a8d100eecbca1a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/NOCVC2474100.