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 0x40aa339f032e5b0a1f64cb35afe92594362975aa57ebb8b8a2994849ed9876d1. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de6e7b5b-88e7-402a-a2ed-1e6e3c830879.json and https://artists.proofprofile.net/proofs/artist/de6e7b5b-88e7-402a-a2ed-1e6e3c830879.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Die Höhepunkte Der Welt-Uraufführung
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 0xf560bd7dc23b894b53701d1cdd6d76f65460f01676e87972a571d475d037411b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:29:24Z), 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/DEN129901393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac5b01293046965a624d1803ab3088edc8068a6e1b2db2dfb448e9e3268cfc1. 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/DEN129901394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab06eae656535492b73208370763d9f6bb72b33cf0ff17d13431b597af75e73. 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/DEN129901395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556917c749c4d5156a413614a4c4599a56c5736a8856b3c893c918a107df1f92. 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/DEN129901396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28701d4d39ad2a5c036a53115d025fabfac30f6ceaa35542539dcb12e354f4e. 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/DEN129901398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1693041720bf445a9c4576e6ae0ba7f442fa89cc8b5ca2a133942b0bbd28ef. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEN129901400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad72ece9f052c18cf91cc4536e55309fef21ae6e1922193723cc0b70e8fdfc1. 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/DEN129901402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80858d99367508be98ca00962a7f13dd43c9b85f906144b7a56d441d1a6d02f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEN129901403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c309d3ce0ebd5a70bcc80f5efa0c24dbb12d7c7acd12d376bd78cc96e9fc761. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEN129901404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec450aa444b77928f737b250883d2e442a27b18de2d188f87b2818444318ebd5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEN129901405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd776cc8c8856470575424424280a6ae02746b97eb0c1a752f5302b35de8354. 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/DEN129901406.
Mozart: Wie wird man seinen Schatten los?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0814df72321e02dd01a84e80cd8a27fea539a274e9742385aabcdd29d11ff31. 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/DEN129901407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb493ebad983e845acd142b09447ba4f83820346cfea3e7cde5d6d6b581a7981a. 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/DEN129901408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a0d121cec775d7364786fe425fe5bc83e6a87d00ffb124f9dba59725d288f8. 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/DEN129901409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81c3e0aa938c0b1549e9ea30a3b576ff2f513b48998437dd20407b5f4e311c1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEN129901411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cfacb2395a1e0a840942cadf8c20d80ddde77aceaa1081eca5a496683a4474. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:03:09Z), 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/DEN129901397.
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 0x3f4c970e33f034b41cf5365e3e15674cda2cbd0819de71a9d766926fceb85e0b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEN129901399.
Mozart: Ein Bissel Für's Hirn Und Ein Bissel Für's Herz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cfb25ebf5e5d735ed4946f673602dae39bfc24d1246da0352cbb69022e25f7. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/DEN129901401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465817be19d17bb91f4b9a1a39254a5cd98ee62dde7fb6d1a53e18c15412429d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEN129901410.
Mozart: Warum Kannst Du Mich Nicht Lieben?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cec573f90f48dcb1b0159d1ffa878189f4f6b5a989d47a16def51a3ba68ebe6. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEN129901412.