thumb|upright=1.35|New York has garnered the nickname Metropolis to describe the city in the daytime in popular culture, contrasting with Gotham, sometimes used to describe New York at night. thumb|up
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 0xe77c9e2fbfaabcccff18a08a333e9d4dd9d143287034825ce641c9a91fe96a6c. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24351b0c-8470-4037-b7c7-2470ad616f47.json and https://artists.proofprofile.net/proofs/artist/24351b0c-8470-4037-b7c7-2470ad616f47.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Greatest Show on Earth (feat. The Sweethearts)
Greatest Show On Earth (Expanded 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 0x4f2e9af102742c7e8d3062486e87e8d6dc071434b89a91fc5da766cb5751aa46. 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/QMSGD1220233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889c55eb5aa18a8d53839c0c89208eeb7e7d2d42a374ea12fcb1cf3afef5b196. 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/GBPWR1300259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd537e20799f68e1432f38ba0ba35da9a48c56a9ae4434c76fcff8fa133b203ee. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBPWR1500430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b93d73225ac4db9b55232fdf92806092b3c91b1954ae725afd939e8a3073b19. 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/GBPWR1400373.
Dubcatcher, Vol. 2 (Wicked My Yout) [Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9981d9f0da67aac536a64c23e818c932754fdfdbc720d3f52a45d0ce6b0e980a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR2EI1600920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635dd0886fc219481f2939594794ca04a38d0f87ea26455e5020fe5ee20c3b30. 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/FR2EI1503090.