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 0xacefa16ebf52244a41d30b85f5be7f0701984e73e5c9bdd247d2f349c28a65a6. 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/c69e705e-24cf-4542-9f33-49abaafc127c.json and https://artists.proofprofile.net/proofs/artist/c69e705e-24cf-4542-9f33-49abaafc127c.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 0x64904442c66508a9c9cab4ce92a4e9161d13016d1e090fa6efdefb254f199231. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:17:53Z), 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/USHM80469224.
You Are the Best Thing and the Worst Thing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364a03858e8b7497e0bc5339159f4163ff9231016e1bf96b089866d89634fc66. 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/USHM80469225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97d6062fd93d96a73bd34260d7ed2894723bd283975147d31c14224c6dc7430. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USHM80469226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b51eaf9b7e5fb4f588f25965425e9965940a74fed17afc7a0a16507e228be91. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:21:03Z), 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/USHM80469228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cfe03b55f92a5f1a26029aa789de21cced2629a53556d3b476747fc5187843. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USHM80469230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5f6f376b320f130f3d5c262cc2771204ba163efcecd6d822c24c33b49d3405. 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/USHM80469231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a95fad9c7e5dbdb29133a6e173f67f1b57e4ac086754f66c34c3a8450729ff. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/USHM80469232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fbf34fb35c73a27b524c287062947442ba30486e2175d60461c754dc5f97a7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:47:24Z), 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/USHM80469235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d88514b08742bf2798ce8dc585b80970f3a314be519bbe3220fa7a5a1a84e2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:28:02Z), 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/USHM80469238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87b4923725b9087d233775ed23fd61ad72f2ac3a26d9ceed8a9e81850e06585. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:12Z), 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/USHM80469241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb5e58c164b0eb375086a583d0a69684ba60a441fbedd93fabf7b44a49ba1a6. 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/USX9P0758098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15abdbe6c6cc5b75e8c7dd2645914bb1f5963f026231077631ff062c3980612b. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USX9P0758100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4246a59b8ba75dbf4b390380832d881e09232f5085a6e90d13c41f493e17c7e4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USX9P0758105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8c36245c297e413b8e76b481974b20894d60102ea2a03634fa5075fc0494ab. 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/USX9P0758108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01303a1e6ff6c352af40fc28b835c61f1956bcd8ac911c2147a4e5b7a85ed8b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGH2088225.