A multitap is a video game console peripheral that increases the number of controller ports available to the player, allowing additional controllers to be plugged in simultaneously in a manner similar
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 0x78cd7e3b207b63a9808b9bc924ba69945ac75b0fa2c3492084cbb0ddf9dbaf16. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/928636e7-caea-4ecb-9062-814a2d46d812.json and https://artists.proofprofile.net/proofs/artist/928636e7-caea-4ecb-9062-814a2d46d812.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 0x90f5c505df1093a0a4cc51afe7ea82a5c9c316fe1c6bb2c1b395055dc4f849a2. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TR8601000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf3b9a630d243bcc0891f1269b71120dca64f70157770cb838f79372096d6a6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TR8601100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7559bdeb3ebc44a0293b978dee51adab40de47a9ad7c946f3783d523292012df. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TR8601100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143b81107587537f33111faf67615c73b3721a02e393f18acca39934047b09b6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TR8601100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3c76d0e1874dfa556e79c3355b77a2a2bec20c2728275b34614a7eb49424dd. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:44:34Z), 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/TR8601100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639ff49689950879db8b3f9d6590e4939075125dd236926e6c65d0fd31860b38. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TRBDY1919201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3d374f3d7e2fa380594f0fd5d685757134845692653e4c59ce36fabbe7c69d. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TRBDY1919202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666b902c8d545af9072d93b6848a56a2d1007b15b63d81be55454f9d5f2a3d8d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:13:58Z), 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/TRBDY1919207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5069b8890210490b00e161bd2f3374a9da740b3881a34c23c01e8c8f9388bd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TRBDY1919208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c5fec1435bc5af1964517286fdf7fe89848e340c52da9a9861ca43431ba4af. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:35:33Z), 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/TRBDY2244301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32ba91c7beaebc5708105f167f06724e99422c95479fdfb7ae4690d76632b51. 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/TRA161100024.