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 0x034a79af9d8959953d7eb4007506335ff7b2a081b4419983b24de85467dfb8f3. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c3a76d3-3b7f-4a4c-921b-c40e6466d226.json and https://artists.proofprofile.net/proofs/artist/7c3a76d3-3b7f-4a4c-921b-c40e6466d226.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 0x115e1d15efaee08b8066c51cd81f93cfe704633592bdd5c42ea435dc5c532a97. 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/DEQ121640996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f305a9aa96b062045fc386b75323a0cee75d38a7a787adb7cda879a15d4c68. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEQ121640997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5291c9870c99e4e1ad1289e83b643c4143b1660f17110e8cd3065394e1d58e98. 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/DEQ121640998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cb313b68159e18511e0e5a5b5500c1f5a76ce7f58a13208ea36a64973af8e3. 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/DEQ121640999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d11df9493e7b48ad66749ff8a591ab84ede4f787016a582dbf3a742bbf6659. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEQ121641000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ca261715fc614a1957e2244eeae63774a686e56adb8fa38e60c054f293926c. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEQ121641001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdea1bbce9d29a9d9f51cc48269e178b0f96ddbe6c47e933b2eac3fd5215010e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEQ121641002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb78bb189edd7f0c03385d6ac780c4f9895ec00b87fa1f9a9995ea6b58f2ecd2. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEQ121641003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d04c7360dafc76e5e8807c4f0f9ee926a9a61d34ddfd9b98c9e26a7125949f6. 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/DEQ121641004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657e6757e439b1f3ace7a854d221e58ef4daa09710d90becae63469d83cee605. 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/DEQ121641007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a73e73c196b0b2e086874bc4c95e051146933c45f29055815ea15378eab328. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEQ121750398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ab8baf73cd3702b2ecc491030d272323d1c8c9635b6e049b668a1d9b3c7405. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEQ121750399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acd217b56341789f72441d95537618f3a000b84cd36fdc2ac76ea26718df547. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEQ121750400.
Irgendwas zwischen sonderbar, kitschig und unfassbar dope
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cf913785c8e2fb27514def7e0acf778bcb6b2d3b8d9a998b57d11cbe4fb7b4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEQ121750401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898dbd6a808e7a195fd99f8a16006b85bdf6f4ae4de71994ebd8997c20bbd019. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEQ121750403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a856e1b4f249cc96161d5eceb31e8e49018b10fea4e50b511a107226ac7cb74. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEQ121750404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec9244fde24118ba43ac8020c1f12e5d3289210c53494cdae44aec74ee3220a. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/DEQ121750405.