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 0x68e7b629ce82e9832c2624c47b4f1d20b2ae722d4dd6defac85bdfc086a745bf. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9376a9d4-9b35-4f94-8728-a2d433d362b3.json and https://artists.proofprofile.net/proofs/artist/9376a9d4-9b35-4f94-8728-a2d433d362b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Killin' Every Motherfuckin Thing Swimmin
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 0xb068b42c1adb2bbb3f1e11c5bde8847a7a1cacdcd3e6cca83bf896a9c27cfc16. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:39:47Z), 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/TCADQ1837175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9699dea9d35dadc0ebbb531e3677d1a304049129106dcdb3c358e2ba3a16c0f. 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/TCAED1958438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc1eb26a4523a4c9a9affc12c3c8cfce7ee4b045a38e555e206b2db548667c3. 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/TCAEW2046468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5178201b8b4f543706b26aaac3880209c6d2d00660a9f1bd6d52d91be7d23de. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:38:17Z), 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/TCAFI2169441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6966a4abc8ea1c70ac47206b99e03141666d664eac0a6c4424e0a25f1562b20. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAFP2182000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703237cf704707d0c5d4c78ec1cdf128fca8d37febfbace1911c5276107a5fb0. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAFR2141051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13baac32e63b09b9e7b65d556bffe5011da88fd93b12583ffcde7b472d6edd9. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/TCAFY2114789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9f0182fd0e979ea5a22d4937ff0a84353a9ff6ba44f01e2aacf97c34bfce55. 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/TCAGB2287986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe140776af9f5efc43d83ba0031b9ed238793b73652a4e1c47cb4e62b9dde831b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:13:22Z), 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/TCAGS2392362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6405e88104f380f49ba8c3d408fe83f264cdee1b3a6ed2bd25c5e8c06dfb963c. 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/TCAHZ2483150.