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 0x57c0a0746ddcb1831bef94a34ced7e5b0b024cad27ca2d992576c670655e27f8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9d6abbc-3dd7-40a0-ad0f-1f7beacdc4f3.json and https://artists.proofprofile.net/proofs/artist/a9d6abbc-3dd7-40a0-ad0f-1f7beacdc4f3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc89fca525792f748e1afcd5f13f62989adcfef8891f41544d17c88b0119853. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ESA012035236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bf24524fa084d1a29c5dcbd117e3110d2f3321676c40993ed32fa6fd8f7c18. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ESA012035237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946d46b3517dfcde8b9fccd2ace44df24ce6ba2725a0a2c8fdadea275cdfc9d1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:34Z), 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/ESA012035238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd770253c108b2cee8739013554de466a51c79bedaf50de56353a67513346a1d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ESA012035239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1b749eb47830967ecbb397e6c67cffc499781cb7fbdc6f342a61b1a253b71b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESA012035240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4a1e7eb50c312a00da4f301c6d4d58997fd649e17aeb8dca2d1ce08001729e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ESA012035241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033651acadf76a9a2905383bf41628c410c76ad547b8c51572035d5e0de783bb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ESA012035242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646300b36e75d85db872f0057d7d9e0ba4da9b5f201fdecd5d5205689b041b14. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:21:27Z), 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/ESA012111124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5189799c8efa4e2ed9306cdb20a80b171038a1b14117740a224a2ae7d07304ef. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/ESA012111125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0733158e3916d396f187149f3a5edaee27701db1c79edbfb57c722647568923f. 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/ESA012111128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17f7c716815debcee5baf76dfe12f3df034b2b74fe1b76fa058417f81c8fe1d. 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/ESA012111132.
Brief Stories About the Universe (Deluxe Edition)