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 0xd34a2184b8c909e1be3814118156ab5a869bf559dc46a173875e6f7900f3e42d. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9dd6712-9771-4c26-8e8e-838a90429e65.json and https://artists.proofprofile.net/proofs/artist/a9dd6712-9771-4c26-8e8e-838a90429e65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Family & Friends 2012 Dubstep Remix (December to Remember Song)
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 0x6348605d5e011d0656284a902f1f9df68556dbb9d998779a91af2c3d8821a1c8. 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/USQX91400366.
Amore Infinito - Songs Inspired by the Poems of John Paul II - Karol Wojtyla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2809c833d96b2434759fd75f54e0cd62880de4a88bfb95c5879b2ec19880c029. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USQX91400367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa220d9f84da71a7f98517eefe51a27684d8de049fa37bfca78ea46b6d5283218. 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/USQX91400368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51facb5f373fcaf05895f00990e8726ac48f7f673c093529a8641a7553afc9a8. 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/USQX91400369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f822a3edc7a6b41ec00a74a874289514797f0b3253bc3544dd07928e9ee9e4. 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/USQX91400370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa0ffa837dbe164e4c3196f0dd0a9dbde59432c16c15a8a6409fb48c079da9d. 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/USQX91400371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7531ec28476f5cf51742deb4107367ffc84e649a119d7f588d86d085485ab92. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USQX91400372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93f98b5c23c828e3fa6decada9c622c4fdbdf2fe008922be341c8c88c629603. 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/USQX91400374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1ee19ed55113da37b596b9b6679f2f6f3b2711a505dd4c2349521c39cbdeca. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USQX91400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2456aaa184e42e358b674a57f274a180411e5d6487bb8ff82cd80cc789e1453c. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USQX91400376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76f43dcd9d9a1636a9fc64963032902e1d323c01844c53885825099603ed88d. 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/USWB10202011.