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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc415f8e26e9119ee25144c87ab3f3f4cf58cda55fa96bd9f7b3f31fdb31ea4cc. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96c82489-9800-4b30-8389-85b1b2ce92a7.json and https://artists.proofprofile.net/proofs/artist/96c82489-9800-4b30-8389-85b1b2ce92a7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Khazad Records: Various Artists Vol​.​04
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5985626891f3e43a698f7604711de8c53102ce4409040a9a2d252f99732615. 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/CA5KR2249677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05cf19ed16badd76f896fbe35726403f968371660be5675708a1e0e30032093. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2249680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb669cfb93de108bb3d888a34456723b765955bdd981a20de6fca0f2fc59c206b. 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/CA5KR2249690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979dca24a8e4ad5c3630e0b564db672f9c7ffb537cf5b0d9daea35b0419f5e1d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZS652172448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2330069d4366af54643c73353fbb1cc9cfc0cdce34b7b9b9e27419c2790a47. 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/QZS642155158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bd6ed43725f372478d70a525a87a1da49593fd531993b129fdb9605e4d1f71. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZS662100699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca6d2d7b925b6aaa9cab4527c834073f8caca51d9f0dadfbe5c547969ba4fb9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZS632177008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8548f40d2214b366ee8c137df1cd0b5f35c50982bce9c388bdcd0c46a763de96. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZS632129546.
Schatten der Venus - Crystal Geometry Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8a00122fa6fdfd8e396caa1d1342941a58f9e9bbcdb19508dc010c14a0f105. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZS662148650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5315410f21e9d86de2aab1e5dbc2c6a975a029d18c65519b8ef8492ac2393d07. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZS672147034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde7768c4226ca8ea230afdfd35e08c5e6c6a9044dad499436dda95046c0a594. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZKDK2066481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4f98b0ba166c97e300f2c20c2238ab2cdd0d5360f22f315bf364f2f1aff02e. 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/QZKDK2071593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b71b0399aaa30037d193a9118c0d37426bc4b2fbcae436a8c14874827e0c07. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZKDK2018241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d46f4fddb546a8b612c9b5da812a9ba831089e94bae998999d918cbca01dcde. 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/QZKDK2074284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd0882e99f2131efb3c0a399565cd3fe6185f9a67e7a1ece7f80cd710d2bec4. 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/QZKDK2092295.
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 0x21ff3727f8c3c334a07256d86cda056bcaf643a7637fef954ee3a2eb14f1ab1f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM42K2107382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c135a5035c8560d2ac56118406af48e3d163a1b38617d15ba5005cbc7f86fc0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEAR42092281.