thumb|After a Gale – Wreckers by James Hamilton thumb|Gale warning flag A gale is a strong wind; the word is typically used as a descriptor in nautical contexts. The U.S. National Weather Service def
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 0xc19f670bbaafb1388b376fcfa2be10f0a5dc3012792e57f9a77ca3286e48b5bc. 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/4ade4c6b-b72a-4607-83fb-e92f1e852ed2.json and https://artists.proofprofile.net/proofs/artist/4ade4c6b-b72a-4607-83fb-e92f1e852ed2.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 0xf78aa2436dda7389fdf2fba00a3fc55aa75f7b4997d6a4261fb4f73c5b3bbbb7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USSD12200350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7a2d5b818721ad1cff4039c79c67de65bd5e19ea86d3d4d3a519619e74bd66. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USSD12200888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65898bfed4c35092e773c39c669332ac7ec01ae0e2aa7d7b78f9bc0f940c051. 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/USSD12201088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174dbcd9a4f193b70f1e343e257c7cff4e70246873a3426cad0f34850047149d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USSD12200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7a2d5b818721ad1cff4039c79c67de65bd5e19ea86d3d4d3a519619e74bd66. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USSD12200888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b862b872983ff98818e66cad7f4f08866aa8740b23feb5a5320e4886ba2ea88. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USSD12300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78aa2436dda7389fdf2fba00a3fc55aa75f7b4997d6a4261fb4f73c5b3bbbb7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USSD12200350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735a6adb3e4de20dcd75f342208cb4f5624e799f801f6003a9f5044c74528db3. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:01Z), 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/USSD12300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2664b00b1cb6ef3f13a79794c2678aa985163da17f0c9e597a35dd398104b0c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USSD12300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb61c2c2e96b0efc033a8d8ee74168a7b25197347ae2a4778a236099e1b575ee. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USSD12300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eb6734e93fe0454a374372a6464e844d5a1a044a7ef8aa4c888ac82d66719d. 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/USSD12300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c9db733ec4b652dee533388f559212ec9c31715876cb408c91ad860b13fc79. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USSD22400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b5e44cac266dadd5ead35eac0e5d912deb2056f1fc17f0d4134cdfedf990be. 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/USSD12400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ba97569a69c0c6851b4391fd532c9b3a5208d0109fc1a6b54c16c7355bdbf1. 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/USSD12300723.