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 0x47781b576f067e4b122da5e8e777eeb511d99c7f59e191582d139b35a4b6aee9. 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/264728b7-344b-4bbc-9253-cb8e72772a9d.json and https://artists.proofprofile.net/proofs/artist/264728b7-344b-4bbc-9253-cb8e72772a9d.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 0x8f2b8ed2e40c9cc4258aae639800ddcd7fb1457421d5ed8ba53b813a7bba9d96. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEUM71100521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7e559e55334bda0bcda5328136642e3966bb79b612f5cd2b08038a365401fa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEUM71200191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd786ba265aaad25c6143e22d0535b4bc8f5dafb6c6e3ec99977ac733fc0d83e0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEUM71201193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace2c392be66e95caafc513209e5cb79895cf1921daf1f4a5b81a4abf1f9bdd7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SEUM71301605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c52357b2e88152d11d2055c34ccf994f5b23edc6095ac638a101e5d07b93d2. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SEUM71301607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645fab8b2132131efdeee889c8f388aa4e77eb64de7cfa2d4d59681d975051dd. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/SEUM71301608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd4b66c7bb1f9be4b4f1004af45b50dd20d546fde633f6d0f13f553f54eeb2b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/SEUM71301609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9938f0be93f1066b71797756857e2d1c8a169f6be9c1e95a40f196623b5b4b0a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEUM71200516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632e7815d0ebe8fbc963bf0be003707088c9605fce7daf32e625df9cb04a68c3. 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/SEUM71301611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7ef71f586358f39e197104375ee63998fc2ac44cdf1b7ed74285dc8ab3b085. 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/SEUM71301037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c06bc243c12525a3930bad58db00ad997bfe7b344be7177a82f4b052d70df6a. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:02:46Z), 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/SEUM71300659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb276d757aeb0e691cb744f6a40fb765a45542ce7a6d49e2efe39ead27f88e3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:01:26Z), 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/SEUM71301036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1d789b43667f7459b3e92611fa2583891d95311d906471562c04f5be9c575c. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/SEUM71500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c537227b916ca1ee2f7aac4c8dc543fa194024ea1c0a6bea93e857b8cf278d1. 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/SEUM71500598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe712e1c3cc932d77974d6a142b44de0d7da76e6d4f15cb663f58598851c99007. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/SEUM71500599.
Den inre rymden (som är den del som ligger innanför månens bana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde5fa5904411b97a21ba59780d69adff228871a53ba50eab21ddadb72eff8e4. 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/SEUM71600700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a2efc6c4585e246cd9a5738ea05e683d8975ffbee408c5ab34a388beefe861. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SEUM71501177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8399f5f21a045881f5ebd66205442ed3ae4a1fe6d611711b1c8c632947f116f0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEUM71501930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4294bcb88b97ceb379fac4af11c7cfe16a948ecd17269677a3e44d2ee1472788. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:46:16Z), 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/SEUM71600702.
Den yttre rymden (som är den del som ligger utanför månens bana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa405bcc6bbe9f2f21821a54621efce0098756cc493acf38ba5f3a71ce97ad5d4. 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/SEUM71601429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a14b050c2ecd10a1ef8a4b514850e0d48763892a42d3ea277b58eebf8ae29f4. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/SEUM71601432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dc4e89f86cd477ea232ae8f36e99b5739abc02535f86f40dd83750958751fb. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/SEUM71601409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478ecab6a45df63aec1f7831cb7f9a55714502c2c076259f286d267d386fd311. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:02:00Z), 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/SEUM71601434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21540af59adeaba53b94c701ce084109692b52658d3604099a3cdd9775a9d7f. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/SEUM71601436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2491b3a7f973ee9968480aca46b36a569939ca1375402d694748a74dbd93850. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/SEUM71601449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3240936c7ae35752ba62c9097ee1b718ddf579204ac38acf7ae6cda0320d4057. 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/SEXPJ1700701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c75dc0315d4560444170cf696fe82602dae056d34ca4e33d7bb67638c4d3c87. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/SEXPJ1800501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16024bc59d5caa3f294c9a87559de1b3ebe85ed85313960fd2acc0f63b98431. 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/SEXPJ1802502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69d5a8b0d80e8addc43f784515b02a71b169cc8a9c693fc574e2848f14cc3df. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEXPJ1802603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f24056e8a1e5e8847b21c07e3a547fcabd8f782b3d5b3b93d704a0418d14c8. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/SEXPJ1802704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cccdf3fc704c5a7914bcd8e105cc020b01e34eff8556b3b961fd117c9f9321f. 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/SEXPJ1802805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3721c06d1e48fcc002a4b7a853985a9e2e8ca5aaee97a99a9e4c72f71214a5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/SEXPJ1801101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41a2f769b456fdcdef3edaf178d6eac997975de1661478dc905af8d5e4b1a33. 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/SEXPJ1803209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b30e3ae6b15e6eb42fe3b112f78d05a1ea649068af4c72151e7636f7833a89. 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/SEXPJ1803310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840d08ea68585281bb856cc863842f89dd4c330ceccb49dc00a07be116916c47. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEXPJ1803512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4de32d0cdcc474240e7252ecaa9d701d3dd8b37471babb19a781098612a768. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SEXPJ1903101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c04da0bd9ca603da8baaf673c92ec19a521eb10dc53c6f142a443c8d93ba2f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/SEXPJ2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb5f0af478c1d203b1d068334e1ae8a554e05ad118db6a9042358eb2f0f6e2e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEXPJ2001501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd786ba265aaad25c6143e22d0535b4bc8f5dafb6c6e3ec99977ac733fc0d83e0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEUM71201193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245f1427b92473be802512b971dc40c94253732a067d7e7e01e0f9c54e40d2bd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEVUE1800602.