Magnadur is a sintered barium ferrite, specifically BaFe12O19 in an anisotropic form. It is used for making permanent magnets. The material was invented by Mullard and was used initially particularly
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 0xa6b5714364c9c7f6d38384c4d472089b518ebc374cbbd100ed015f4cd7d38600. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4226e8a-dbc0-448e-b4da-e2f7b192a08c.json and https://artists.proofprofile.net/proofs/artist/e4226e8a-dbc0-448e-b4da-e2f7b192a08c.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 0xf13f521f1a436d009ae9ce70866657cc71ce72b3011d00f7337992fc6f3904be. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:55:52Z), 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/TCAHT2478493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e9673f9f425a5659aed79fb60597c9a63a738a5221100a46856fd21037e8a5. 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/TCAHU2450967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553fff21a098639851ab16e218700237b4e68e643a7d861eeba99d107f1a2d21. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:26:32Z), 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/TCAIB2481714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92af549958c5688b83e6e3129913a253235bb2b6a38ce25d06b9399e4a988962. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:09:37Z), 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/TCAHY2481312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd9a40dd52b420a7de781df1f892117dcacb2170eeb19c957b8dad31d29c77b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:26:25Z), 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/TCAIA2441342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a78a4aaa3df67ee1948b8bc061e9dec69b5ee973297292ad30aac6b9cb5718e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:50:11Z), 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/TCAIF2464798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cc714031765e64a97d505a82b3dc5fe84b21542b2ee75e7d137ff1ae0e3bb9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:51:31Z), 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/TCAIJ2496220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f340f8335bf0d2bce123573e154663f585a812c053dcac5bb8e78a9a5999d3. 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/TCAIM2495220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41c02b12fd82d98681864db5fd78f4f2e6908e7d143eb147d6c0504221c7046. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:00:35Z), 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/TCAIF2467022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d7308ba5f6c44ec83468d3817608cdf1d0704f368ca30df32f98045b77e7ec. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZTB62491071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645dfdf82e12a6f15a63b9f2a3f96faa7afd5352d81efb12a3061c4d9b43e066. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/ITN582403832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6edb9a7faf9e80d74900524cb2b4894d2ebf378be7ff4ae97062796d07fa954. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:27:19Z), 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/ITN582403833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066d40ecc250ed607df5de3ef2d03b77e27d6f323975f56c9ac433bb8adc5afa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITN582403835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b055fc3c45398e7bc5b1162c04ba02b3353a3f81caac11d94472c52d35fc942. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:10Z), 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/ITN582403831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55fccd44a5f5a1822abcc0aaef496b388de522955bc800e6c624a2e7f206a21. 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/ITN582403834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07db18604d567bc8338e37161be99b4dcdd757a12a40dbd6fbbe949eddf2829c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:46:35Z), 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/ITN582403836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b48bac3143ee25807284657725111a4f5bf02c9bb829996b123347761968751. 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/ITN582403837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbba41410ac1f8d2b74b99c9460629261597c7110acdaf7f47dfe91547b8cdf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITN582403838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423a9dffb0a718bc201f4e503321af85b852afd6ad16347bcf1932b1ef57714f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/ITN582403839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbd5c184627cda6cc204c0bc1b59b14f0518129ba59a076d3c5560e48b7913c. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/ITN582403840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1715f3bc96b002a23d14457b77441bf3dc0998fcf8ff6d3359f4458ae48e02. 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/ITN582503878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5442336c637a1902eb6c2b15cdf8fc434ed8f490e53b5f361ab7cffa9fe0253. 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/ITN582503879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7f3032b9d80dd48481a7ce02e1dfbcf5c49e3d320b2465a3e63a34445896f5. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZMER2561300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42e5b14e28997195dd5f72d97f976fd6422f8d2249fb13a97f301260ffa5800. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:00:17Z), 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/QZMER2561301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aff81e87ede02bbef024b2d8c834c34399b2ec709eff33e78c41ebd0a05cc23. 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/QZMER2561302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6f315ecef12f5280e3d5f9b0e177b51c150a81f032d005d088489e4b3404a2. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZMER2561303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26442138936efc5b865097a1af0f23d0a318d5a7acc0cd1b10efc86145fb60ee. 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/QZMER2561304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dc79a7aabfd61afcff7882296d854d1ad166aa315c1d1763a81485bf121f59. 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/QZMER2561305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f00712bb8bb4d4e2385619fa3b9bcf4c76fa5ecb722e090325b40445dc768c. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZMER2561306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb91793bf42495bb4594cc00f04ff4a954793525b8a4fb5764d9fbe1cb027c72. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZMER2561307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57372f8142bbc3586238d9e19d5a22507c8c21d0e6e78162d9a6bdea6d29d539. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZMER2561308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f36fde292bcc78977a74dad183df61ffcc5bdcb8531aaf570f9020d0616f83. 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/QZMER2561309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9796b5ec33748b59ce2a1e50c1140c693bda240c2cb01d5b14b55c7b4b28e5b. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZMER2561310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548a55f7a389e62d627c03e98cd8ac7932e00a731d4235093b2be364d821084e. 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/QZMER2561311.