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 0x895396cede204604dbcd818ae5a72b25ebb5b8736ff82abd5d0dff5c3872c827. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/906cc1a4-1707-4a66-84b0-6826e654bda1.json and https://artists.proofprofile.net/proofs/artist/906cc1a4-1707-4a66-84b0-6826e654bda1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Das Potpourri des Herrn Baron von Gunzenhausen
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 0xa9c2b7d6e0177e19d6c83f0d449186c2f85d7a3af7d10d4702a2f4ffb426e18d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEOV41400551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bed21f7917ffd3a058b89e3f94dc21ef4253a14cb9a1b1e27e27fbb2d3e96c5. 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/DECW61700096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd4075cf4619083943887f28f80c1cb39ca3e0161dfce789c0fae4ee94737d5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DECW62100084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c7294351024e83edabab19839f5503391549cdf51ca2d4075163dd52c30ec9. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/DECW62200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887e2ce4757651b5063632cd530285a4b7cf647c809e7cb7aab34fdcb342cdda. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DECW62500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3b60faa40465a57c59bf72c77810c445102ff3498f24e5f07eb89693f7c90e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DECW62500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cc195d273c2e75093e967966952db607f1253e77758e2e8a0720b5d855c3d6. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DECW62500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45670f04f7d154017ddbc5b9e5ff14b0f64b893c24b97563bbcc84b92e47717b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DECW62500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f86376070ea16c7d35c1ca399ce31db6517d0e6b136466d56754ec95198865. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/DECW62500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2394ede10443e6179d7c694da55e6a5799d191ceb3624aa086e019e14fbf1e09. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/DECW62500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83444b5da19d8208a6733e0724501425fe0aa3babd2030100602a34e7b41b42b. 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/DECW62200058.