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 0xefc25968d01a371a37b6c1079d839e549b2871fec2be4826b0cce495d5563ee5. 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/c950da24-ef90-4a29-8f58-88a0b3db295b.json and https://artists.proofprofile.net/proofs/artist/c950da24-ef90-4a29-8f58-88a0b3db295b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wenn der Mann im Mond das Licht ausknipst
Wenn der Mann im Mond das Licht ausknipst - Instrumental Version
{"copyright_id":"0x5e3625ca18902e2beba2c873dd84979a62ce1c0e416f0e617c439dba4e85b707","isrc":"NLS6R1705550","name":"Lea, das kleine Gespenst","registered_at":"2026-06-04T14:48:25Z","spotify_id":"1XeSDf3xKJjNeL6DnzD8rO","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 0x5e3625ca18902e2beba2c873dd84979a62ce1c0e416f0e617c439dba4e85b707. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1XeSDf3xKJjNeL6DnzD8rO.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/1XeSDf3xKJjNeL6DnzD8rO.
Ein großer, ein runder, ein roter Luftballon
Wenn der Mann im Mond das Licht ausknipst (Instrumental)
Wenn der Mann im Mond das Licht ausknipst - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10d623f7898e07be1efa956b6d2e7be91578511b69a15d09027a710212b225b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1t7cNf2u5E9TY63z8k6dFM.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/1t7cNf2u5E9TY63z8k6dFM.
{"copyright_id":"0x9f716e6f497a56fb819882e75f2fefe1e5eee17c97bf6187e0fc3ba7ce055488","isrc":"QZNWX2116080","name":"Kling, Glöckchen, Klingelingeling","registered_at":"2026-06-22T13:22:47Z","spotify_id":"2Ij9lywNKsEyhpi8pzZsbm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f716e6f497a56fb819882e75f2fefe1e5eee17c97bf6187e0fc3ba7ce055488. 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/2Ij9lywNKsEyhpi8pzZsbm.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/2Ij9lywNKsEyhpi8pzZsbm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110c8adef272d18117e3da1b002b9c3b5322546f08f0ea67c2262127b51bb045. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2e4vzgxqOxTR9o1v29nL5d.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/2e4vzgxqOxTR9o1v29nL5d.
Ich wünsch dir 'ne frohe Weihnacht - Pop Version
{"copyright_id":"0x8bec83b75b011df509e8e0d5075155fdcc3a3540a28456f09cdebc34da6fba8f","isrc":"QZPLR2135541","name":"Ich wünsch dir 'ne frohe Weihnacht - Pop Version","registered_at":"2026-06-18T08:03:44Z","spotify_id":"0vLnUiJebpP2frPt2itV7F","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bec83b75b011df509e8e0d5075155fdcc3a3540a28456f09cdebc34da6fba8f. 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/0vLnUiJebpP2frPt2itV7F.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/0vLnUiJebpP2frPt2itV7F.
{"copyright_id":"0xf5f9e819b576cd17d88e86fe38501f256796abeee4a07419c709087cfbca2178","isrc":"QZTAU2151679","name":"Tschu, tschu, tschu die Eisenbahn","registered_at":"2026-06-04T16:03:13Z","spotify_id":"2eUHG6hSb43L4s8hn6CChw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f9e819b576cd17d88e86fe38501f256796abeee4a07419c709087cfbca2178. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2eUHG6hSb43L4s8hn6CChw.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/2eUHG6hSb43L4s8hn6CChw.
Grün, grün, grün sind alle meine Kleider
{"copyright_id":"0xb938b726e2a0910c7e5b29c49aad520c2321322a803e36c21c9b89eacd00bb3a","isrc":"QZFYY2216101","name":"Grün, grün, grün sind alle meine Kleider","registered_at":"2026-06-07T11:57:15Z","spotify_id":"7vXABS8N5UYBYxbBo0e5l2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb938b726e2a0910c7e5b29c49aad520c2321322a803e36c21c9b89eacd00bb3a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7vXABS8N5UYBYxbBo0e5l2.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/7vXABS8N5UYBYxbBo0e5l2.
Schlaf, Kindlein, schlaf (Piano Instrumental)
Schlaf, Kindlein, schlaf - Piano Instrumental
{"copyright_id":"0x93634042229950b5eb45638af15fe4856d324f3513e3ffb1027707e9387ed2fd","isrc":"QZDA72238269","name":"Die Affen rasen durch den Wald","registered_at":"2026-06-05T10:22:29Z","spotify_id":"2NJXsfJJ0Ehs6NiGgzague","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93634042229950b5eb45638af15fe4856d324f3513e3ffb1027707e9387ed2fd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2NJXsfJJ0Ehs6NiGgzague.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/2NJXsfJJ0Ehs6NiGgzague.
Wenn der Mann im Mond das Licht ausknipst (2022)
Wenn der Mann im Mond das Licht ausknipst - 2022
{"copyright_id":"0xc0be43d255d7d0cdb5cecf8e1fabb1c95e65ee8490a1dd76b5aac7bec69480be","isrc":"QZHN32266342","name":"Wenn der Mann im Mond das Licht ausknipst - 2022","registered_at":"2026-06-04T06:55:09Z","spotify_id":"7rh499hlx1v1PxtLf05pOD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0be43d255d7d0cdb5cecf8e1fabb1c95e65ee8490a1dd76b5aac7bec69480be. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7rh499hlx1v1PxtLf05pOD.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/7rh499hlx1v1PxtLf05pOD.
Wenn der Mann im Mond das Licht ausknipst - A Capella
{"copyright_id":"0x695b1b3c966df138c33d5273745b749a47fe786c9875467bb98615432e1b5f1d","isrc":"QZHN32266343","name":"Wenn der Mann im Mond das Licht ausknipst - A Capella","registered_at":"2026-06-08T15:45:23Z","spotify_id":"15S59wyLHmreTCgVECGSoS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695b1b3c966df138c33d5273745b749a47fe786c9875467bb98615432e1b5f1d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/15S59wyLHmreTCgVECGSoS.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/15S59wyLHmreTCgVECGSoS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47122f84b44202a5483b177835f084ce25abca898effb926dfee87363bb8b4d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5FzKm1GGDmmYC9l1rPo2n2.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/5FzKm1GGDmmYC9l1rPo2n2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e08daef49436c2900b8a3bbada22f770af93e1f9d68cccfde55e983e2db94be. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5TJcVfYBT3hsdc7N1ssiQs.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/5TJcVfYBT3hsdc7N1ssiQs.
{"copyright_id":"0x27359c3bf5f46e465b79a40da91a3e12bd4a3933fa65b8c7bb560fbf7cd419fa","isrc":"QZNWR2253655","name":"Mecker Blues","registered_at":"2026-06-04T09:19:12Z","spotify_id":"5BHvfedPHAMYaOrQjjYChP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27359c3bf5f46e465b79a40da91a3e12bd4a3933fa65b8c7bb560fbf7cd419fa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5BHvfedPHAMYaOrQjjYChP.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/5BHvfedPHAMYaOrQjjYChP.
{"copyright_id":"0xb83ce2ca10dadf80b17d1db33480a6ea67d2d96f37c17a875b72825955cde542","isrc":"QZTB72220494","name":"Weißt du, wie viel Sternlein stehen","registered_at":"2026-06-04T09:20:08Z","spotify_id":"5Gzw3ZyAF7YYr9SEvsmtq0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83ce2ca10dadf80b17d1db33480a6ea67d2d96f37c17a875b72825955cde542. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5Gzw3ZyAF7YYr9SEvsmtq0.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/5Gzw3ZyAF7YYr9SEvsmtq0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b7d76c3d668f70992df2a146a1a3b339cf0f79b58914fb226cc44da455f74e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0pKmenDY0UVcotPq4Pl0bg.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/0pKmenDY0UVcotPq4Pl0bg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b94c39080f8174253df676b525a6af821176f80273330ac691945c7184cfc26. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5l7Piq7NpfIzJ6ZJHKANiF.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/5l7Piq7NpfIzJ6ZJHKANiF.
{"copyright_id":"0xe4a2a2f5945851178c12f93b916cfec9f9b06bd0a1ff839907398eac20c0010a","isrc":"QZMEN2302609","name":"Pi Pa Papagei - Instrumental","registered_at":"2026-06-09T22:06:38Z","spotify_id":"6cBcrmTOio78YAHJwF5pfh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a2a2f5945851178c12f93b916cfec9f9b06bd0a1ff839907398eac20c0010a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6cBcrmTOio78YAHJwF5pfh.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/6cBcrmTOio78YAHJwF5pfh.
Alle tanzen mit (Der Rock & Roll Hit für Kinder)
Alle tanzen mit - Der Rock & Roll Hit für Kinder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09e44d0f046e537b19a8c79134aab517f3a48c1dade9900114d6184783557ee. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1Kr20AINQVQDVjznAKA4oz.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/1Kr20AINQVQDVjznAKA4oz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf777ea081609df65de64d809f072302e9439e1d96436dd2e31a7a9d772c917c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4KjahETpVyTAWWq2SNz159.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/4KjahETpVyTAWWq2SNz159.
{"copyright_id":"0xb34c2661b3b92c525e687fc1c0485a701cbd6d0f382a3714efad958043ace515","isrc":"QZES62431533","name":"Mein Abend - Instrumental","registered_at":"2026-06-06T07:09:20Z","spotify_id":"5LcHtOZYk3zaRkSciZ19vg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34c2661b3b92c525e687fc1c0485a701cbd6d0f382a3714efad958043ace515. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5LcHtOZYk3zaRkSciZ19vg.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/5LcHtOZYk3zaRkSciZ19vg.
{"copyright_id":"0x0c32af1de07fbeb5ad5c60a829398a38d03a281f6ca9e03be872d876ed955564","isrc":"QZES62431534","name":"Mein Abend - A Capella","registered_at":"2026-06-23T21:16:57Z","spotify_id":"5JU5hpNqmrmqArl31VYZSi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c32af1de07fbeb5ad5c60a829398a38d03a281f6ca9e03be872d876ed955564. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5JU5hpNqmrmqArl31VYZSi.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/5JU5hpNqmrmqArl31VYZSi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb97cc3f88e9c9e621226064a4c305875be6dbfbb728feb1799c35ce9ac3ad81. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Oiv2U0cPpDfVlcaCfEhA7.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/2Oiv2U0cPpDfVlcaCfEhA7.
Drache, Drache, flieg hinauf - Instrumental
{"copyright_id":"0x99a9f695fb5c412cd3f9e0e22ac12d9a7ed61cb8df8fca50c6d4cbec570d4daf","isrc":"QZWFJ2474619","name":"Es ist Winterzeit","registered_at":"2026-06-09T22:16:50Z","spotify_id":"1C61wcMnM7bVMuIBOVbhqF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a9f695fb5c412cd3f9e0e22ac12d9a7ed61cb8df8fca50c6d4cbec570d4daf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1C61wcMnM7bVMuIBOVbhqF.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/1C61wcMnM7bVMuIBOVbhqF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307b351bf9f4a38b1a22598a43383db68145f17ea1ec8df65d479d869fe2f59c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/08tULOW19m96252goaOrjp.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/08tULOW19m96252goaOrjp.
Kindertaxi - Karaoke Version zum Mitsingen
{"copyright_id":"0x4ac267d42000237daef50e5de949eb51092ba2e0ed83a13e0a7c8962e74c68c4","isrc":"DEYX82127431","name":"Zähne putzen, Schlafi an","registered_at":"2026-06-09T00:41:16Z","spotify_id":"6DGthM92CwTU092qCvvXTZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac267d42000237daef50e5de949eb51092ba2e0ed83a13e0a7c8962e74c68c4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6DGthM92CwTU092qCvvXTZ.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/6DGthM92CwTU092qCvvXTZ.