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 0x00e10e42e1e2a2b63ca1fd1462f787da64c5a43d17cb1cc0073f04c29da96a52. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be827950-8109-4c46-81c3-c926f87a739c.json and https://artists.proofprofile.net/proofs/artist/be827950-8109-4c46-81c3-c926f87a739c.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 0x6d964b0ceb3d6bad36f9f168c2cea339e009f4ee24ec74fea5cffdb5351eb1e2. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBK6Y2251091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f57a3b2480f3fd44cf75ad5137106fcee824cfd2cbfa8ad2914bd2148f5ce2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBK6Y2251092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c96f994be10e803cb8553b4983082231787099b6edce63dbd371ed7e6e131e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ITA062302094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4101912bcba1795a45cc6c5827cf2879f344fc53a7700dbebf2c101e3c63d0. 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/ITA061302509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53cd87aabc157779dc88d44872ddf1bb0e67366fc4fa65692b3dc6cf0657ee4. 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/ITA061302511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2501b98f318f0aacae5bcc2e8344bb7c83bf6847a426c881d7102e974bac25. 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/ITA061302513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe31954a98b749e61ad951c2a5f421093cfdee1af512ad1526cbb79415f580f3. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/ITA061302515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4db40452c922cc1eb466ffbef92faea16c3ae65b36a7c316fdb71f56238f4d9. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBJX31960034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e60f66949fc182f77bcc7933f8450664587dde120fd83b51225f708eea40707. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GBJX31960036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a99d0b1964e6136ef7bdd02f510bfb4e0991c44a0568f8bd89650a27cecf10. 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/GBJX31960042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67edcf20c8a194aaa6a059155387432128a267af47a94864944b9204ebf35a7f. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBJX31960044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c963948bb68d37ae1c3b3c021e49718dcfb1b0185663e93383378a5cebc4b73. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/GBLV62121126.
Voltaire Music Pres. Structured, Vol. 15
Voltaire Music Pres. The Amsterdam Diary 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e2730eaa538a763b0e549ab68420423a4aefdd8b1c205aeabf11fbc80eec58. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QMBZ92408723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7aa1c040e2da8a30c0e357751dec65d3a0d7b6ed0f5f81cf4457b3554dd882c. 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/QMBZ92408697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab1ff27679c61fae88d5bdcd8619ecedbbd3c88c8400982bfb34cba8efe5708. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMBZ92408724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc62f2dbcc2dbc98169635c2604429fbb8a29070f2ea5c5ceeae3e4d896c9b5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QMBZ92408696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e527f58f401c4207f4cf193115caaa4ecce3878b8eef5493c6a86cecf979aef. 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/QM4TX2488785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c04b4b5d8153a4b95d661d3f5e9637fcc67c3f201f69c07dd065b5b5b0d0bb6. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QM4TX2488803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3769639bedf0e22a8869137e6efde4a464cadf2909d1eb41f2ab988eb00efc. 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/QM4TX2488810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89e8fc3b70d7e15591282ff66a2239a29742c7a83832165d072f9763b6e9982. 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/QMBZ92590931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdc4ba6f0e42819d04dfc85fb269d6a3cbe5459ddd072b10d3d4cee1d52ae1d. 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/QMBZ92590936.