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 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 0xd70004520c200845d2e8dd857ede2c4f4aa49a6e30392e35cfbd317d568eb2ea. 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/c3575fab-d888-40fe-8828-cb8272617a57.json and https://artists.proofprofile.net/proofs/artist/c3575fab-d888-40fe-8828-cb8272617a57.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 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 0x091c87efbfd0c09d8c25ec1a1700c97a889bb0902f0978f96453e96e6608c13e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DEGE20700004.
Wer ist der geilste Club der Welt? Gladbach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0b819cef12d847fa5e9a898e6ac9af00f9a38a5a1cd9bae622d411b8f6d9b5. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/DEEQ81000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dc69665768370e8b4b95c2b986bbbe3c8f31c59d4c919eb17a37a5f333517d. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/DEGE20700011.
Millionen Frauen lieben mich (Xtreme Scha[r]f Mix)
Radler ist kein Alkohol - Voll ist toll Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfb50ff2c90926048d689537b4e30645fa9bfdc66f2b23203a33b6bd213b899. 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/DEEQ81500051.
Die Nummer 1 am Rhein (Karneval Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f60f0df9a704e4a90352b3a4db3ba6da582541515958ecb9b9cb354f16e670. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:30:25Z), 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/DEZ521602208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2921f45918ff8ab115a51d9c8696867cfd97c6ea6036debcf7e6d398c5492cf. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:05:40Z), 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/DEEQ81800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c6824ad51f1cc65282e49443901079a653b1206ac71d852d21e701e9745a0d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:46Z), 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/DEEQ81800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400b516a57ec8a089631f08471bcd4148ed7796089ed4e11c63462f255c2029a. 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/DEEQ81800166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb5f18f31a992cebd09c6603f0a8b73684913f791ae1c01892fa02680f29d15. 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/DEEQ82000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086bf7edd764aed23eb808dfd182e0a3dfbd5f4b4c43cd7048d0f074d5e3f892. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEEQ82000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de15123725fb09962648e77404e93ff9ce0446019ee4110267160f8d84a5a85. 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/DEEQ82200067.
Mallorca lebt (Ich liebe deine Art und Weise)
Der Bierkönig lebt (Ich liebe deine Art und Weise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752d106f22837a3e75c59deb7abada6f6461bd8bc48cb10006bbd8c7644ddf90. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DEEQ82300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be18cbf7f3322b82af96aeed5fee607a197886f5a72e202ace7c6322311699a. 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/DEEQ82300166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c1aa8bf0cbc46b715c53efa965c255d72f47c9028ec3d6de7ea0ada6146f93. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/USZXT2454567.