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 0x46d3fde61cf394ceac0c61b1b778131ea02b546a4cd6cce3cdf698847b47c254. 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/223bba04-2a8c-4d89-aee8-c495060bbabe.json and https://artists.proofprofile.net/proofs/artist/223bba04-2a8c-4d89-aee8-c495060bbabe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Legally Blonde The Musical (Original Broadway Cast Recording)
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 0xb09b6a85cd43d1b3a90c47774db4586c683d23ec62b1d086d07f855441723285. 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/USSK30720004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eaa3419852bc27ab898e1ea4c71a4e2b58fbd62bfa9ddcca16c6d88d4dd5697. 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/USSK30720005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9c8952282981dfbf60db4e9adb9f5358fdadff30d186ee346dad3dae61fc29. 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/USSK30720010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d346f4b46bb97931ee3e4cee7693abc09d91074bbd713a00298358f37cd38b. 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/USSK30720011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8b7c212a76074044bcc426be8e9062d727dc3097502e32f1ef77cb3b5af572. 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/USSK30720012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae60addc446fb22c3a44f601c1257fa5070ea66ea83adfcf6724389a7f24954. 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/USSK30720014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a25ac044f73cccbb65c1744c31bb78b94a15baef7dabbe2a90c1cf8ed47df40. 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/USSK30720015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5629e7247a5966df52ba4d89ee655c468fc9bf238c1a84c0f94630967c48cf. 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/USSK30720017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1830e994fab8608cf8a6c3c2c30c02f2297406a4b6af6972e06db0e4691822d. 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/USSK30720018.