thumb|right|A burning torch, discarded on the road in the wake of the Lewes Bonfire Night celebrations A torch is a stick with combustible material at one end which can be used as a light source or 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 0xbf2301b3f5f47bff03fd871c94eff0540371717bcbf8dee5c7b07b37810a815f. 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/bf4452d7-660b-4d0a-8c2f-1910c783c2e7.json and https://artists.proofprofile.net/proofs/artist/bf4452d7-660b-4d0a-8c2f-1910c783c2e7.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 0x41d3a5b1a9ff6e1931bb7ee03eea4c12df06c79b8afeeb4351194c5c15a6d43a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM7281867866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55ebb67a467384a0d504dccf0f3498f01f24849b59280a11cbb6b27992abec5. 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/DEUM71801832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55ebb67a467384a0d504dccf0f3498f01f24849b59280a11cbb6b27992abec5. 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/DEUM71801832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45613dc6b1acafefffb9e27cf43bff44ef9840b9c8c037ccfd4742488333ffb. 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/DEZ651351109.
Immer mehr (feat. Flo Mega & Torch) - Mr. Dero Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0e5fa4a8dff2c4a0018f810ed2e563098176dd1e5ca2d770b7bdac45e643a1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM7281998825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357afdf2628bdc58f17c3d3f1281b01f16881c7f7255fcba5ef79a188b70291c. 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/DEZC62452967.
Wolf Biermann RE:IMAGINED - Lieder für jetzt!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b156251d3e38d993f64d47e7df9f42af79cdce8d1fda625c0c0bbb9937fa72. 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/DELK22300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1b61546460b5fd081f88ac80363b317adb789a7f70588252f7a1b75b92c442. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEBL60359128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e862cbe0504973394c2936be4565d87aa8dadb62b2ea67eac43d1510e6e4d7a. 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/DELJ81212271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8d8641672ff7c85fb9693644391dd53985d6174bc05f3e5a100abfe8ecd03f. 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/DEZ651712427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4791d151d3700fadab1b9724b7d4d4b3eb8624a73b04d1f1c4e3cce96bd01d84. 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/DEZ651712439.
Heiss wie Feuer - Instrumental (Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1785c9146171d45d066fac04a3abe18e1e2021c3efe8dd3a24e096cc34c2df32. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEZ651712440.
Spiel des Lebens / Spiel des Todes (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185ab16f61f977ce982e06836c837f110900e5a7eff87011675f58b291a36954. 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/DEAS39800016.
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 0x31fc2e4cee74bab6215cd74f6ea69b58af084b3503c8613b7b972b06f1335efd. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DECL50600066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48563a7991ab40deb904b0f60977c81cab8cf2dafa55b45293e9ebe20f28aeb2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM6N22294614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962c4846f23d7d8a6aaa5fa0717cdad2a851c5ebda1fe58187e0d39c56e6dd9f. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEAS31100031.
Scheiß auf die Hookline - Bonus Track - Future Rock RMX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bbaf66caeb94883b2cb206dc5c68f65a0776ffae378cae24f409b489796df0. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEAS39800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3bd9f55193662b73620799a486900a2d7de2ac0468e150260696c5ece6d369. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/DEAS31300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bdee8a67d52aabb2dac099b17e6913c403058f667075c4c2f4dec6bfc62342. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEBL60359138.