Montag is German for Monday. Notable people with the surname include: Carol Montag, American folk singer-songwriter Heidi Montag (born 1986), American actress Holly Montag (born 1983), American telev
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 0x4902c7ec4f84c673035430ece1ddffc3cfa23644fae3df1a5ede9df9212c3ae6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4f6e2c1-c616-47cc-a444-6a6da824bf49.json and https://artists.proofprofile.net/proofs/artist/d4f6e2c1-c616-47cc-a444-6a6da824bf49.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 0xd4f5ee171a4b01e08afe8535f6e5d73dabb43c597c3e1c5662925e963bc3362e. 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/ITP842300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa172b4f5bde36bdff1f327a6fd1c113454bf4c19e4a343109ca4f0dd4d2bac7. 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/ITP842300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf872ee9e48200259ffc784493be613c93f5296f1d6a653607879ac20e1826a8. 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/ITP842300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edb007c45dec6007e7cc329f6a717f90ee8ac239d0618d6519bdb3f3b1b846b. 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/ITP842300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77932566264416dcdac469fcbbcdb7f06b8a55c92abd5eb6b7820cc3a82d7b74. 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/ITP842300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe010d922b451183e6ee97b6b9c508a53bd418192a3cf97d4d577455a97d46a71. 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/ITP842300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33a014778297ca863d17dd8c5c6e2e180939804fd70b782b01dfaea865ae369. 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/ITP842300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9753dda299080b17b805618cf377f2d09f1336a2b643120ad1b01f2eb1bb542. 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/ITP842400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738ec4dfbbe090baeb2aac06b61768b57a41a13442b82e1c71e9512c941f12be. 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/ITP842300288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5b38b3197851b4903b4a476a4d1ebad8d2b4691f7227a95a823ba16d36ff30. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SE6A91846988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5627cab84292151ec4e8ff3e94507c8da81e70c3a1b72170fbe6ebf36915209. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZDA41842195.