1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcd044a17a33ef6e61fbf73b1b988e8d8298e69b132b04d4042ac28a7b2c7081b. 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/0586398a-dfbd-464c-b940-38da2a55c4e4.json and https://artists.proofprofile.net/proofs/artist/0586398a-dfbd-464c-b940-38da2a55c4e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kapitel 1 - Folge 50: Ludwig II. - Der Tod im Würmsee
Sherlock Holmes - Die geheimen Fälle des Meisterdetektivs
Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0xe7da692b472043feb3291cc3f19335ebc3af5b223dc0f6ca81b2972805f3f2d0","isrc":"DEKV42229001","name":"Kapitel 1 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-20T01:09:26Z","spotify_id":"1N0FJf1YPqQgznmwqNjH8f","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7da692b472043feb3291cc3f19335ebc3af5b223dc0f6ca81b2972805f3f2d0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1N0FJf1YPqQgznmwqNjH8f.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1N0FJf1YPqQgznmwqNjH8f.
Kapitel 2 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0x131a224bb1554872e999185840f012319a97f19366fcab7144153ff1ba0c4b69","isrc":"DEKV42229002","name":"Kapitel 2 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-20T20:00:56Z","spotify_id":"2fu5pxXKQKlH6sNiMQukZL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131a224bb1554872e999185840f012319a97f19366fcab7144153ff1ba0c4b69. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2fu5pxXKQKlH6sNiMQukZL.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2fu5pxXKQKlH6sNiMQukZL.
Kapitel 3 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0x128c6a859a71f45854f87ea97facaf7c5ef84e21cf6a52ce5c1ae65059d1dcd9","isrc":"DEKV42229003","name":"Kapitel 3 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-21T10:06:40Z","spotify_id":"3Ylv8lIkZkQnM7PbBQALWT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128c6a859a71f45854f87ea97facaf7c5ef84e21cf6a52ce5c1ae65059d1dcd9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3Ylv8lIkZkQnM7PbBQALWT.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3Ylv8lIkZkQnM7PbBQALWT.
Kapitel 4 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0x059732c08e5651beaeb8927a739e68df53446ac00b4936a073aceab92ea401ec","isrc":"DEKV42229004","name":"Kapitel 4 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-21T10:06:32Z","spotify_id":"1ydTOZI4WflhEps90eLM7u","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059732c08e5651beaeb8927a739e68df53446ac00b4936a073aceab92ea401ec. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1ydTOZI4WflhEps90eLM7u.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1ydTOZI4WflhEps90eLM7u.
Kapitel 5 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0x6f186f7810b00ce54c6992cfaa36eda68226c18cd7b2f060225ef9b16b34182c","isrc":"DEKV42229005","name":"Kapitel 5 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-21T10:06:22Z","spotify_id":"3YXPxNJafouOtMwdZmruwc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f186f7810b00ce54c6992cfaa36eda68226c18cd7b2f060225ef9b16b34182c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3YXPxNJafouOtMwdZmruwc.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3YXPxNJafouOtMwdZmruwc.
Kapitel 6 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0x7388d25003b341e548377d7ef6dbc629cc2fcf2201a0e1f1c911d6bb67574850","isrc":"DEKV42229006","name":"Kapitel 6 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-20T12:16:29Z","spotify_id":"5AfiFafmd99ZBKf6IVKNxE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7388d25003b341e548377d7ef6dbc629cc2fcf2201a0e1f1c911d6bb67574850. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5AfiFafmd99ZBKf6IVKNxE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5AfiFafmd99ZBKf6IVKNxE.
Kapitel 7 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0x64fa5f255c0c4a33c6fbfe5bb58b91d9bc9c4d208dede7154362a06889528568","isrc":"DEKV42229007","name":"Kapitel 7 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-21T10:14:39Z","spotify_id":"187TpV1X6LwyAPEpGW1Tng","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fa5f255c0c4a33c6fbfe5bb58b91d9bc9c4d208dede7154362a06889528568. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/187TpV1X6LwyAPEpGW1Tng.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/187TpV1X6LwyAPEpGW1Tng.
Kapitel 8 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0xc870aeb565f1baf5041335f90eb78d0b9436333db7220e49d4c59c1d6adb1899","isrc":"DEKV42229008","name":"Kapitel 8 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-20T12:12:29Z","spotify_id":"5WoACQwAVVZer0yvV9JiIC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc870aeb565f1baf5041335f90eb78d0b9436333db7220e49d4c59c1d6adb1899. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5WoACQwAVVZer0yvV9JiIC.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5WoACQwAVVZer0yvV9JiIC.
Kapitel 9 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0xfebd14ac72377ceade7a1a50680b021cb292f193a66c470c6d0577059aa60c0d","isrc":"DEKV42229009","name":"Kapitel 9 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-21T10:07:53Z","spotify_id":"13cJ6bXLbXHcCShs13yndH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebd14ac72377ceade7a1a50680b021cb292f193a66c470c6d0577059aa60c0d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/13cJ6bXLbXHcCShs13yndH.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/13cJ6bXLbXHcCShs13yndH.
Kapitel 10 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0x7e8f18488f22fe1764a479111bbb5261fd2b8f1c6feb895478456217f3dfb09d","isrc":"DEKV42229010","name":"Kapitel 10 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-19T17:25:12Z","spotify_id":"4E3VUJG1RlTUvzEG7bxjH4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8f18488f22fe1764a479111bbb5261fd2b8f1c6feb895478456217f3dfb09d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4E3VUJG1RlTUvzEG7bxjH4.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4E3VUJG1RlTUvzEG7bxjH4.
Kapitel 11 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0xb3f4125a75a38c34639324895389f3f771369aa2dcf5e018c65f4c59deeea7c5","isrc":"DEKV42229011","name":"Kapitel 11 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-20T12:18:25Z","spotify_id":"3ZTuBIqMenGSBo8qrxb0uV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f4125a75a38c34639324895389f3f771369aa2dcf5e018c65f4c59deeea7c5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3ZTuBIqMenGSBo8qrxb0uV.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3ZTuBIqMenGSBo8qrxb0uV.
Kapitel 12 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0x3f67076783a7c1426f5b2c96b45f6baaf25bb864130cf960d1282804fa318988","isrc":"DEKV42229012","name":"Kapitel 12 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-20T12:13:43Z","spotify_id":"5lnWXZRVTL4HqlyrA95G7C","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f67076783a7c1426f5b2c96b45f6baaf25bb864130cf960d1282804fa318988. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5lnWXZRVTL4HqlyrA95G7C.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5lnWXZRVTL4HqlyrA95G7C.
Kapitel 13 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0x4c4556d2a63783c4d13230ff5ab67c8108550fcfb5181d9d32fc94b139c514f6","isrc":"DEKV42229013","name":"Kapitel 13 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-21T10:09:01Z","spotify_id":"0JIH3p7hqyldB5VwVvEJxk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4556d2a63783c4d13230ff5ab67c8108550fcfb5181d9d32fc94b139c514f6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0JIH3p7hqyldB5VwVvEJxk.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0JIH3p7hqyldB5VwVvEJxk.
Kapitel 14 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0x34ddde4a3614c6514749300c0c86daae0b5664a9b10f5b50ee9379d147118abe","isrc":"DEKV42229014","name":"Kapitel 14 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-20T12:11:55Z","spotify_id":"7qlJh3mIH6aZUO7tXkQjeA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ddde4a3614c6514749300c0c86daae0b5664a9b10f5b50ee9379d147118abe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7qlJh3mIH6aZUO7tXkQjeA.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7qlJh3mIH6aZUO7tXkQjeA.
Kapitel 15 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0xcb601b2b32f6c29f4acefef6b1f13e46f6fc48baa85396ca3df6ec062f0c9bfd","isrc":"DEKV42229015","name":"Kapitel 15 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-20T12:18:35Z","spotify_id":"5RKxDH7ISpWBsTcuW8lM0y","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb601b2b32f6c29f4acefef6b1f13e46f6fc48baa85396ca3df6ec062f0c9bfd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5RKxDH7ISpWBsTcuW8lM0y.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5RKxDH7ISpWBsTcuW8lM0y.
Kapitel 16 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0xdffce594debe7e5cdf29bcb85818aeaf622fec7e1311f21e8085347b05393fd6","isrc":"DEKV42229016","name":"Kapitel 16 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-21T10:10:41Z","spotify_id":"21MQuoqHAIQGHI3X9vb6a8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffce594debe7e5cdf29bcb85818aeaf622fec7e1311f21e8085347b05393fd6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/21MQuoqHAIQGHI3X9vb6a8.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/21MQuoqHAIQGHI3X9vb6a8.
Kapitel 17 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0x4136c09c0c2f1c00847fac233563ec5cb741949a48cd6a86d1ef701ae8dae4fc","isrc":"DEKV42229017","name":"Kapitel 17 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-21T10:09:01Z","spotify_id":"0IdCJzKXfHxDykQyDJfxvr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4136c09c0c2f1c00847fac233563ec5cb741949a48cd6a86d1ef701ae8dae4fc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0IdCJzKXfHxDykQyDJfxvr.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0IdCJzKXfHxDykQyDJfxvr.
Kapitel 18 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0x3247af0d404bde1b6f458402e0645793ddf4c75dbc3bd00eed6cafbbdbfb457e","isrc":"DEKV42229018","name":"Kapitel 18 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-21T10:07:57Z","spotify_id":"564mma6Hr221iMWypXI1fw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3247af0d404bde1b6f458402e0645793ddf4c75dbc3bd00eed6cafbbdbfb457e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/564mma6Hr221iMWypXI1fw.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/564mma6Hr221iMWypXI1fw.
Kapitel 19 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0x176b80c891549e830ef36c2bb660241c1ee1a24c85a18e066a7c1510f2c8d24e","isrc":"DEKV42229019","name":"Kapitel 19 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-21T18:50:03Z","spotify_id":"2LJWZMMnQ8ig8YJquFZyW2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176b80c891549e830ef36c2bb660241c1ee1a24c85a18e066a7c1510f2c8d24e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2LJWZMMnQ8ig8YJquFZyW2.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2LJWZMMnQ8ig8YJquFZyW2.
Kapitel 20 - Folge 50: Ludwig II. - Der Tod im Würmsee
{"copyright_id":"0x7efd79ccff3a8548e47311a6b8de5043cdb2127cd7ea0d77ee2130143857e0b2","isrc":"DEKV42229020","name":"Kapitel 20 - Folge 50: Ludwig II. - Der Tod im Würmsee","registered_at":"2026-06-21T10:12:57Z","spotify_id":"51x8LWHycQiJtH6lhoBcax","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efd79ccff3a8548e47311a6b8de5043cdb2127cd7ea0d77ee2130143857e0b2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/51x8LWHycQiJtH6lhoBcax.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/51x8LWHycQiJtH6lhoBcax.