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 0xc16a10b89b8f93e36c9b205b6538bc4689e16fb7f693adb2634a209d939606ff. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f2d3bfc-b292-4d82-b980-09dc88131c43.json and https://artists.proofprofile.net/proofs/artist/3f2d3bfc-b292-4d82-b980-09dc88131c43.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 0x73abe1dc795431d779ff545da624299eaab5235d82796e34dd833ef98778a61a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2151943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540d1a4fd01ccb366df2cbd03ffcd0e786f3be7ac1f04df2a46d6deee0e7f67d. 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/USA2P2201541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ded860632726b52cb11f78f4469bfdb32097cc83fd69900ecd23937faaa9001. 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/QZMZ92331074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd97ee1c3ed725d37e4431970647a07e8f70fb7d539d24645cdef777706f0d7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ5AB2481594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6613c011ea4aa7806a763ca3c7f2b97d72af2c70244755867ca042d86bf75cf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZ57A2104165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15471aefc43a07f1aa2b0afa9c82d9f272d0c619f13eea57c25c870091c6206f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ57A2104177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c2f8f9162c787a3c50bece2d36fa9bca13087857769bc252157bb51f165872. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMZ92401811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ded860632726b52cb11f78f4469bfdb32097cc83fd69900ecd23937faaa9001. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMZ92331074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bdfe7b2593918bf66c4de9aea60979fb3bf3a46a2ce3295ebdbfaba90c9457. 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/QZGLS2385407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6e9b36913cde2343b0f32086c882a941838120097314853ba5a91ad9f3325c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ57A1904122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e40ef13f48877efe35e80b29527c7919fa3f17834078356b0744c29f79c0e7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTL92583256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e5b6d54251fc850dac876a566da911525319a0fa11bbaed69646bdeedc7809. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTAX2495981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246d61d2b716bb5ef228bac6eee2017bcfec0850c327cc5953fe44f5a972994a. 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/QZWFE2406026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9d8905d7475cb3e1bf6a1157f2d4fb3c0c933d5057649f5d6c2594b1b318c2. 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/QZWFP2454495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5938ab4c144d6abb6d26e009a137622a492a4867be425a543a5c330c2c97c73e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZZ7Q2420189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b669abfb48cf2b8cc110f4cff587461b27a1cb537b3b9ab47cf5419c299f531. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZQAY2511157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99be6a6a53968a43a41f6cf621ec54705b221b33ecc7e2b29743c77c450ece36. 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/QZTL92585214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1719d335984a63b1ed07102a9e57ef9985f141d3737e9c89be6c6158b4f548c1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWR2271652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50839d6574e6966cba1430f48215a10e1c294e8260531dc147c1c09bc8b65227. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMEN2232775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8ed62291cd6272429a242909a759d610ba5aa8f2498dfaa4f24a16a7e339d7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWU2287114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6572ed71be4224c8afd7043570a394e406ba89145c732ec68dc42118bc61e4d4. 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/QZWFH2404734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb072b7c0b7a8b3c3a3f6b52ae3e8790ddcdd3f219aa50cdd61ecce8b2efdb7e9. 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/QZWFH2404738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28a5bb3e19496abeba7c4c77d64dea4d25c0ace7bba4cf054da848783a0b76b. 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/QZWFH2404740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3453c7bf9d81d6267381a08e8b27222e1a9687dae61732793d8489b44b0b924f. 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/QZWFH2404742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15acdd25ab69e924aa7315f2038fcf42a75b8ab23ddf9d5861a04a7e3b5243ce. 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/QZWFH2404744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651265a7a4238438b3161288c87b4b7371b9d0c3c5f32f58d18d2f70436670b8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWFF2451019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8ed62291cd6272429a242909a759d610ba5aa8f2498dfaa4f24a16a7e339d7. 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/QZNWU2287114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca35f7a85a4b10f3414769328b274e6a1d72458df62d1aa658c51efe6371c17. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJY2562211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99c07fd72ba288cb3180b0debfcc86785a8bb1c2b63f0fec235f2d6172e3b7a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJY2509281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b669abfb48cf2b8cc110f4cff587461b27a1cb537b3b9ab47cf5419c299f531. 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/QZQAY2511157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5938ab4c144d6abb6d26e009a137622a492a4867be425a543a5c330c2c97c73e. 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/QZZ7Q2420189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e5b6d54251fc850dac876a566da911525319a0fa11bbaed69646bdeedc7809. 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/QZTAX2495981.
Mean Girl (feat. Queen Key & Asian Doll)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aba3b65b70880d742746a797954f5244417c4e2192786b5b36457f2b29c981. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ5FA1950380.