350px|right|thumb|Scene from 'Twelfth Night' ('Malvolio and the Countess'), Daniel Maclise (1840) Twelfth Night, or What You Will is a romantic comedy by William Shakespeare, believed to have been wr
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 0xf266e688e32d69e61a14fa3c1c7d9d162b8729f34826428340f2e5bc5d75e61e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7069ca50-409d-4417-a5da-101fe0474b85.json and https://artists.proofprofile.net/proofs/artist/7069ca50-409d-4417-a5da-101fe0474b85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Smiling At Grief: The Definitive Edition
Live At the Target (The Definitive Edition)
Live and Let Live (The Definitive Edition) [Live]
Fact and Fiction: The Definitive Edition
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 0xa71805172e0b1d79b37b809034d0d9245eba6e09c49002a6e2c6a40dbaa41f97. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/UKGZ31800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa337a698d0e7ba3f4737014eb8e6ed8b5500a80a58fd36c7fba3d3997dd03a32. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/UKGZ31800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203f69df104ab769928b1d5b6379002a7e73d3ec9cc97f57d83c187fb6e3ceca. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/UKGZ31800003.
Human Being (Revisited) [feat. Pendragon]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc28b4b676f807162561527607fafc3c15e763d5ad35d7ee2ba04dd055d5ee6. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/UKGZ31800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ba638349801f6f4164b13d8f83c7e9496328cc8431d442c4859db39ec229e3. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/UKGZ31800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee98739089794e4df7abee5463531d54f799c060507e7ec86fac411ef24e0113. 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/UKGZ31800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9834e3ab732dc11149c9b7aba93f67f0c1baea994ed3f97f6b6e550022d8a8f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/UKGZ31800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500ce86cfdbe5907ee9bd478f351ea938deb3b1966fca05210b9b065b50cc219. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/UKGZ31800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6684717a3d049f2a8fad91d352cdb63c57328ad48f01672d2835cce848c7180d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/UKGZ31800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac362b130e7e6697e4a07c445292800d7e6fbfb13f90f26ed619139e2f8f028. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UKGZ31800009.
Smiling at Grief...Revisited (40th Anniversary Edition)