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 0x6e2432afcc7eace2589d58e50e7b3e38ace0d1e6afdf919661db4f8c85d11b1f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5db20fbe-66ff-446a-b95b-f72afb27841a.json and https://artists.proofprofile.net/proofs/artist/5db20fbe-66ff-446a-b95b-f72afb27841a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Slide (with Burleson, Oykie & C.Smoke) [Hosted by 4shobangers]
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 0xde390afc6f0e4298bc8503d501ec4e850af6be0d545e2c5a4d01fa717b8a0690. 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/NL6CS2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25951e58550ab0001b7f52fbafe1487e48ff5b8ca1c37e85c19d163efa732ec8. 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/NLFX52100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b44e2acaedd84a0d34986bbf926d9a178dd5302e13309525a2eabc7cb380c54. 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/NLFX52100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25951e58550ab0001b7f52fbafe1487e48ff5b8ca1c37e85c19d163efa732ec8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLFX52100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25951e58550ab0001b7f52fbafe1487e48ff5b8ca1c37e85c19d163efa732ec8. 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/NLFX52100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25951e58550ab0001b7f52fbafe1487e48ff5b8ca1c37e85c19d163efa732ec8. 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/NLFX52100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee886b3200129329330075d3275f7b60beb288c0773abdc0f3487b51e3ff3e17. 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/NL6CS2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6c9b6c8acaab676016066683a27a9ccc0612c551a3ab65ed7b1ce6909dfbfd. 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/NL6CS2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac85a36f41d7d130e6cea2312b98ae21df6b359f8c333a982cf39987cd2df44f. 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/NLFX52000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a1ba67019e4574e24820bde510fd36520b06695ec572a3424c575c15582186. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLFX52000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe94d39e88baf83dc6b400642539f8a1848baeed488e090e8926be57c2d6e93d. 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/QZES92085567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7962e076d1999fe7c63b2e8f0cd1f52b8da8d434f8fbde414849e011e378bbf6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ22077517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748a06cc8ecddea9aeb73c9001c0826bc5f682eccc64970fe41843e415075b18. 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/TCAGH2225853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39654aa9987d1cb6f1195b731c03ffecbcf3c368e9960705dd244b36eeb08474. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/NLRD52018542.
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