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 0x6efbb3a93a7a09df3ebafb668f181603b4300118867550cbf359f886a7a7f7f9. 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/91d9afb9-0871-46af-b24b-93382aa3d17e.json and https://artists.proofprofile.net/proofs/artist/91d9afb9-0871-46af-b24b-93382aa3d17e.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 0x28d4eec8006e26c5e4d7c444e4fedba303f6d1423d6833e3652a802a016e3d04. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPQ2171545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180cf060d7a929ffdc6bb294028df4d8d644ae430a1a2836b394350d1b0ecc6a. 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/TCJPQ2171570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccb6f5c1a91c8c099acc5f3b3c8c44f8fbff8aa9ec4a37f515c4c89cce66e13. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPQ2171575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4aa945170e22aa56645b2059d31407bc748630f07f6b2bfed11ecfe8f1e0a11. 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/TCJPQ2171585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b29dcd382767d4fdc752e186a3c62916e7bc2dc25b9b9f69d81f274c2fcd2fe. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCJPQ2171512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47480e9091da2ab2dafb524a31cc8184e92beb7a9bf6a9c11f1e6c9207cac255. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPQ2171560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180cf060d7a929ffdc6bb294028df4d8d644ae430a1a2836b394350d1b0ecc6a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPQ2171570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccb6f5c1a91c8c099acc5f3b3c8c44f8fbff8aa9ec4a37f515c4c89cce66e13. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPQ2171575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912eb95378c2550cb2d7a6770dfd2596dc99ecc08c420660820de693859a2d7f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPR2297506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda04d32bfe1f6e982ee771c88520aeb663e2b34e5e64cc2d88d78163968e5056. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:43:28Z), 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/TCJPS2264108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5062eb431f8ccf6b8170f03d000b54e416e837387fb0202eaadd2072a9beaf5e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/TCJPS2287704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d50a5d61377596f90bd46e1688d84cfabd4cf2d3d48e9b46b2085c07d83dd9f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPPO02302980.
Hatsune Miku who can't say "Hatsune" (feat. HATSUNE MIKU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbc95c72a845210cfd144aafa2687e8553e16b3045596d65063693feb473aee. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPPO02502486.
Windy City Yokohama (feat. HATSUNE MIKU)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3df12b8d83eb08ddf55a039c4255bb98106bd3930fb25eac2fe65e857210173. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPZ2456922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd4bbf01d79cd09e418a8c8c9d7d0c53aaedbf9ddfc46c1f7fe45e37ad8b8f8. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPV502100518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607b92d212923b0cac8a1eec86da90802fd50d6afbb75e5d8ad238323ae9271b. 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/TCJPO2140898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172a4f6d3ee9f58626a9af8864282db45266a2c93ec07dfae09611c2f401e109. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPR2294366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b3993e79684d2ccf1b0afb48a1694590084a0b0865d76733f1f9c1742acb83. 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/JP92J2401486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9976d402c5256dc6a1d3bcaffed545b479f7cd615b68a18daff21cad644d7bcc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAHJ2362244.