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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c4620d70d16b837033d7c823d2990f59f3656adaf59bbf50e25361c7c0ce42. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e31f270-7d80-4c2c-bf3d-af8b50dbd170.json and https://artists.proofprofile.net/proofs/artist/6e31f270-7d80-4c2c-bf3d-af8b50dbd170.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a5f7d07fc69fabca6f2526253d7ec46320a733611c3ae49f3271531783725e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ2FP1600017.
DuFlocka Rant vs. Flocka James (NBA Finals Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702bceec40c91215cdce7dfaa865da1e570688d4c4d6a6fe66d14a7d60dcb300. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZ9EM1701378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92c5c383e6ddbba54a4579493494e563db7a7c25f5a36f59dec78277b26d070. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZ9EM1702412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6d322403c7ecad8fac43f5ff61eab36e5bbaeb3aeece046f56fb5407e8353a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZ9EM1702426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702bceec40c91215cdce7dfaa865da1e570688d4c4d6a6fe66d14a7d60dcb300. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/QZ9EM1701378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd84cc2ce3c12417ef0aa61f7993089bd4432ba1bd617519dda95210ff7f6ff8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZ9EM1701384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a4e9af0c704f4181a1dbb50b256980df31d287357cbf7e8c2ec60bb5618f9b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZ9EM1701390.
FlockaSizzle Freestyle (feat. Young Sizzle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab444374c697067afe844c3617e06a57851ca926580f8a24284697f0b27f310. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/QZ9EM1701396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81b49fa63da2a5a7f51bcf7fec782f87b649c830ee34b442d1b77bf73e4b51b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZ9EM1701402.
Workin' wit a Check (feat. Young Sizzle & Chaz Gotti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe903a65d8e73c67b228de25111c7354f25ea5f000e8100facf11b56a735ebf33. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ9EM1701414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2389c9ccd8c8243e288abcfbd8142c308307c4280c25ee3e40c5bc4790843681. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ9EM1701420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06baf839cf082ef1a3d129a2f87389c7d47dde26f0852313bc26f58a7001a94d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZ9EM1701426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa347186faf05e38b249f902114876d4dedd306c1cf37755c72c795f1e8051a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZ9EM1701432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8152cab0945deac923de5eb82c6da1de4ddad895b4c41dc50897eb1755e3eb1e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ9EM1701438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd5c8e3085283283ce575a02fbb0b3b61fadc562472bdb0df8a908a59b31bec. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZ9EM1701444.