Sunn O))) (pronounced "sun") is an American drone metal band formed in 1998 in Seattle, Washington. The band is known for its distinctive visual style and slow, heavy sound, which blends diverse genre
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 0x7bfd31d904d126f4bce47ecb48a2c307b303142e2e9be27ec4492f89ca53e462. 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/cab3c312-b05c-4a20-93e5-d8b41e741301.json and https://artists.proofprofile.net/proofs/artist/cab3c312-b05c-4a20-93e5-d8b41e741301.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 0x91a8ea9bbcd868be963a27a6f79b6f526a283cacb6bb96e99bbcf00d528b9158. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USZPA0900479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac13b1640f5b655a44b8367d9bb7e796acbf88a6b2bffde37a9ddce30cdb1ad3. 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/USZPA0900480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c85be0ba92a900676ab38dce1a6fc884fa61811f237f2f24939b5f7e8cd173. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USZPA0900481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c8d8ab27e4069d54b186b76931bd4983387cb7a2f6720c3f390d2b40c62d8a. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:54:46Z), 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/USZPA0900482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8b79f16f778e3aff648fc90f6dacf78e56887323eed51b1a728187fafa9b0e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USZPA0500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65906124a1b1d88db8bd50a88d144604072c899cb66654a5cba490fbb33759c3. 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/USZPA0500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d253b2a7591ac8fb7a34e1a07499d1e0d00da55ba12e1f211621ea131816407. 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/USZPA0500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020702661a3b3e5bca50e0b2060964a315aba1228f07c0c404410b61834c69b2. 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/USZPA0500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1d8a7849172c47344568b9fa011c08df33825a356ecb73a796a89d6abdaa9b. 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/USZPA0901518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a829a566a1afc79afe07cf7a6a7d2988678b16b96fbd9fa9af9446ef2e30c2. 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/USZPA0901519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7747de365f6a83e218e409516c15289a7810d9e52dbef64da0eac04b28374b2. 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/USZPA0600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bb6891810a2f796c5de7c83e85ae0875286ff6ffc9953eaef09484c9d0b39a. 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/USZPA0600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62797cbb166ead0a1a2fe4338f6d6168914f4ee6658693320b0e3ece6cba0525. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:26:13Z), 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/USZPA0600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bf262f023447ad69c9629c8b7b54199c0f91700710248312720901269b97a8. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USZPA0500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2073ef47e2de88b935726afdb4aada73b114020324122f50ebfc4213e49a0759. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USZPA0500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadbf90c9bc0e649938169590a58e02145102d4d58e416884d779fe49ec3b3cc. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:47:39Z), 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/USZPA0500049.
Why Dost Thou Hide Thyself in Clouds? - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487414aa377a2b4ac145666d6b813771e513677c27778484169163b8cdbd2ee3. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:23:12Z), 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/USZPA0900483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b5eca45af4ac7b1110babff14acff117dbfe00ebe45a64f1bc524dc9d82b3f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USZPA0900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d463ede0d2d247d0fb1ed039127224c214f21fcca44c9f85c82e2b83d9b9ef7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:46:01Z), 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/USZPA0900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b51978d1c84a172dfdc976b68b65903c1d1e5599f02483a1057978f6bded8d3. 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/GBSGM0900145.
Dysnystaxis (... a Chance Meeting with Somnus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0702c97427a4900ff89db5e16938f5589b535c5cbec0c8f04f4e59c75ce2771f. 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/ATE691100501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666116ccc9d30425d6907397cede9681eb1c8af3ffe1d4b760a24ee605823566. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USZPA0900817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b9f9ed6aaea80c437059604deb0ff36f46d598ec55d5d1944b7b1fb06e7794. 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/USZPA0900818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b1192ede8435b1082a51563951c2d13eb8fdf6866ef827b6d3de439c0e92c4. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USZPA0900819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0106f2b5751b44eee062ce78ca10232f6bf79bfe56a30276a7bd540a4630943a. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USZPA0901151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a33799c223224dca2490c3e5399b44bcbb146ef7c6f559765537312ada737b9. 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/USZPA0901152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea72727cf18cf1117ff4f05fadc124c84486fe1ca3b1f2f328868344f4bac0c6. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USZPA0901642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4788ee60117d5bfe4d592e1d540f7c3c3615569d899814033bee159ac8111bf. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/USZPA0901643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457ffec9352d740fb45cbc465bbfaae4b55404e80cb37817dfb9c5d19522c5fe. 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/USZPA0901638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69f418dad102c93919775a54e6c7948ec675d01fd87f9873a1dfe576f1261f1. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:28:00Z), 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/USZPA0901745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b70933b067e078e9843a930a77db56aa8b93dd897991a737c03b443217cd125. 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/USZPA0901824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d949fe173151eab7ca9967775c354113c2173654706a3aee2c46246900a0351. 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/USZPA0901825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf6a360b5a4e4c67d24c059b62af9cb38666cee49f8ffac1ee85254345b82ab. 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/USZPA0901826.
Metta, Benevolence BBC 6music: Live on the Invitation of Mary Anne Hobbs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0d85454a78aa172d7629456309a9522f11e329187b10d586e3fe5c073dce0c. 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/USZPA0901978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abce916c16b658d5f166b6e3ff6b74f3069256ff12981c540d7346afc99b7e0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:55:40Z), 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/USZPA0901979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52a801f1e63e6a2fd35d234128801ffa5dff04848f5909e718a9689f2b7ae59. 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/USZPA0901980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24790c2e59946e4eb54ac789135e3be6734a5641d68f92acc263a984e307c734. 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/USSUB2356901.
Eternity's Pillars b/w Raise the Chalice & Reverential
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee78cc3f404e9d00cba6ded15f14d33ada5ae8cee889f5e45eb76020069e4fea. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBAFL1400147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00ae456686a901ccd95354bfc22bcab0f6ec0d5bed604e89e23062dfa009f95. 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/GBAFL1400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d798ab688363d3d1581030dc5f250354e15a32b087adc6cec32c62d89d2fb1c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAFL1400148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d73422396f11d1bc8d7c36ff815248fffac951ab01d99f4ee29008cf69c8d5a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBAFL1400151.
Rule The Divine (Mysteria Caelestis Mugivi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ff66a85843785b3f550902177cac47858abd1524e89af168f391b769fc5677. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLKU0706006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d07885e3081f8e9189df029052b540863767353fc259465bb9a46530b316df. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USZPA0700777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe04c1297523e18c87dc600aabdf886594e8cfafcf53d54bee05499450ee0740. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBAFL1400150.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066d175081152d27844d116bea985f236c1f5a140abb1a1ece32b7a9cd1cb5bf. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USZPA0900203.