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 0x041d28d91828260bae18e0bff0b21b8ea6a21a694f70c057fbe4efefe154ea71. 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/25ab31ce-bc8d-4cb1-8370-71368e0cefca.json and https://artists.proofprofile.net/proofs/artist/25ab31ce-bc8d-4cb1-8370-71368e0cefca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Another One Bites the Dust (Nightcore Remix)
I Wanna Hold Your Hand (Nightcore Remix)
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 0xfcb57449bff675491d83a9ac7abd1e900339af85d01b6976b01d398653631fa4. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/TCACI1591355.
Blank Space (Nightcore Version) [Unplugged]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a1140cae96ec8f07669e153179f9012279d1ac8fabcf9b2b6563e35c3c7dd9. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCACM1604053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cbee21c5564d545f24ba3209a6c5d9918757e3b14c0179ca1a8362351cbedd. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/TCACR1624902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd8b34c187bd509f89fa49a02087e4d92927402fa0fc4e0d1b00b36d01a79f2. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCADA1717559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37455a6b7d3c28210f9baf877539b5ec977696b1de02abb0c4d935dbec8a8e37. 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/TCADH1733125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b9dbb6371e1c7f2e79d95b13546e09f7134d55bbfb36b86751f685db694850. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/TCAFT2160077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c59f3ad3cf65dc8809f660c265f5c0fbe5901bd1009c7028da9a18b6fcf1b6f. 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/TCAGG2240690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd65d2a9b279d6251ffb4f86ad3e5ec1fbdc97ea4e76a870a35ecb75464cc2f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAGL2290542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef041806b41e42859a0406307a37926b0f0af80183183eaa016e582bab9104ba. 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/TCAGP2237670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100396f5961f16fe53f28aa1c5b624d5ea3e940e7b94ae4e931fde4105da2cdc. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCAGQ2241126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374d88becb41b373bb72c2d95386cb7a5d597ea1fc10d80d322c1f8d4d543e9e. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCAHN2324846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8e7fdfa461fdf843956538e9a8d90ae5652ab01f81e7c22de37b9f98dabad0. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/TCAIM2469787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf079752260aaa860696f8bb181af2c2a407081e63416fd579b3b790a2be89e18. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/CBEYJ2408508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf248dc2877a70d71593f1c38d33ee394e6cd6d0da7681576c4f2403bd1dbacf6. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/CAHQJ2539074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f018f788e57bd4960f7f861476a186de1b33bc2dc312e74b347f24b9aae7d1. 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/CBEYJ2525072.