("Works without opus number") (WoO), also Kinsky–Halm Catalogue, is a German musical catalogue prepared in 1955 by Georg Kinsky and , usually listing all of the compositions of Ludwig van Beethoven t
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 0xe0567feddc7e19c48a4e7ac7b7bc4734deb67701e9761ebaa7e1e8ab6d42d26d. 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/2094f606-d96e-4586-bb65-de01796ad60f.json and https://artists.proofprofile.net/proofs/artist/2094f606-d96e-4586-bb65-de01796ad60f.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 0x3d057fbbadb8518c6bedc83140311e8a0b60e4cfa24ad340ae27e090d426674f. 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/USHM21229392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6421af0ddfd7e6fdeb0548d337e490886a63d7b820622ca174beb713171625. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USHM21229394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831efae8d8416082dba234c81b3c82651277c59aaf94921aaf684d85aaf7ce5b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM21229401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebffbc060ef42fcda12f68e87b8a4b2e74c1120962d0dd342ba09e93ea91cb5. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBLLT1901494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1e471dd8f27dbb7e89c55feb3c54c5c905daebb79feadea48e157658f11611. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:08:30Z), 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/GBLLT1901502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e513ccf09a4b0c16d4c45f0f3d15f13f80a8de9f846fb47e325e80111fa9ed. 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/GBLLT1901503.
Whichever Way You Are Going, You Are Going Wrong
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1704239ac8c22cf543770c693582feb4f4efe07062dfe93871fe766a0721bc0. 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/GBLLT1611851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded3addc045043b9f898d52d4a0230abb6cbec2d0e62df90e82fabebf9ad01e4. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/GBLLT1611852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a428ce5581c2f64ea996490b3cc994a7e5a5806550de7c25c80f1ba255f7f8. 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/GBLLT1611853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d48c7a60d56e2199c8e13aa687d3d375718ec04062624fdded4405be5d224f. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/GBLLT1611854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd5279ca84848a5e365716d2c4c1fac8917846906c063edae78c8e16f5afd60. 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/GBLLT1611855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82153f947c93a61aed165661b6a71a41dc8a072aa331d8c4896bc11e5d7fb4e0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBLLT1611861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf263eed43891cfd62baeaef840a01138c76a508d701890761cd5ef0a995e844e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBLLT1611864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6ce760f4e13262b9cc71959fa48f252d1c892ed4aa215cbcc749ef2d8f8bf4. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:27:13Z), 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/QMBZB1588310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10810c91fadf014bafb44623a5bab9d0d32a2098cd654095fcc36c21d1039b16. 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/GBLLT1809108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64421e5d098db0d7e51dca831879743c023d2905f6c38780cb51f61c4da0756d. 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/GBLLT1809127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1700dcfa7291742a7d38310a6448081234a268c7c77a5326b10ae4d83f4a74f. 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/GBLLT1809139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f645fb23449468f617ae5542d199a0ee93afee78b9920be455c9c33ccf5d85b. 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/GBLLT1809141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd6b9cad47e1258746dff47d4e12a3b981ab070a353852916b549bf96af9387. 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/GBLLT1809143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557e2d31651dffd780bdbcc9d62dfaed1df0217b9517e7bd237c641d06960fa8. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:02Z), 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/GBLLT1809163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ee577d78bb8d39e9aba6548908e8a4c28c4320c673dfdb64d04fd33d8658cd. 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/GBLLT2226453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54adb449a9bb3c98ed83d1803e635a9bb4e755dd6ab62e352898a46925727051. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:16Z), 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/GBLLT2226456.
Music to Watch Seeds Grow By 001: Woo (Sweet Peas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a7a045dc39acaf001c4866c8a276e05c9abe1aaf07236e4c2276bdd3b04b35. 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/DEG932406159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54a18c8192e9dbd0cd32bb76f5e7bd46bbca1797754e1608732789765417796. 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/DEG932406160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfb805eb6c944a7d0afac4324c80496d3e2d43d08ea43ccee622db2c35df381. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:30:55Z), 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/DEG932406163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00791262364075e691ead41b612fe683caacc1476f53d172c76cc86a35bde8e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:34Z), 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/DEG932406165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe651cd1eb2c482617eecf366bf2d052f755e8b5c18f8bf80b4ec69e427563495. 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/QM84B2367016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13df1b23e4cbaa2ce1e8ecc56761fe96a2f3297176c6e76d3da7837a8b855906. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/GBJX30616066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4de02022646b116466eecf28303d1f900d8b3c8b8e30bda97953065c79cdfb. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/GBEXH2100223.
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