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 0xd095bf8b57e3589f0ac3065e4803b290c0223879ebf54812530ee8dfac37e3ff. 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/4de2ced3-5f5b-4128-a637-3152772ec316.json and https://artists.proofprofile.net/proofs/artist/4de2ced3-5f5b-4128-a637-3152772ec316.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 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 0xe030207d465ce5f106a4a263114b8010c44a372298083d6f2c8a9327d3772627. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USGN61108236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16044716cd9b258bdfb49ff02f7a5e5eafe407d702ecfc0c734f3158253d912e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USGN61108241.
Cool & Classy: Take On Classic Rock, Vol. 4
Cool & Classy: Take On Chart Toppers, Vol. 6
Cool & Classy: Take On Happy Days, Vol. 2
Cool & Classy: Take On Movie Night, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f2184a771f4cb0ad6c2f42df596c9dcecfa48ef973a5052e843e7976b25dd4. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USGN61107087.
Cool & Classy: Take On Classic Rock, Vol. 3
Cool & Classy: Take On Classic Rock, Vol. 2
Cool & Classy: Take On Pure Rock, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fb2c2846811ba573f5d24019f0931e1c357a06bb25cd6ebf504a9feee7b0cd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USGN61108020.
Cool & Classy: Take On Platinum Hits, Vol. 3
Cool & Classy: Take On Platinum Hits, Vol. 2
Cool & Classy: Take On Engelbert Humperdinck
Cool & Classy: Take On Charter Toppers, Vol. 2
Cool & Classy: Take On Female Legends, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d963723635f4c1a8009fd74b8f612a44c1dfb52f38bb35579dfe1611cac26c0. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/USGN61303827.
Cool & Classy: Take On Stadium Marching Bands, Vol. 3
Cool & Classy: Take On Stadium Marching Bands, Vol. 2
Cool & Classy: Take On Stadium Marching Bands
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c525972841568350f93b172926f5c45f4f706e70fb83f31d32649a882c1dd9. 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/USGN61303407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b136dfa9e26e5547f723f10f81db5b2f0fe43ce5c15fe07f4626dfe8b1c11ec. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USGN61208161.
Cool & Classy: Take On Chart Toppers, Vol. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789a9f357ca68927ecdd881af7849081bcf28a8c6fda770ed819fd87f143c72d. 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/USGN61200274.
Cool & Classy: Take On Bad Case of Loving You
Cool & Classy: Take On Legends of Broadway
Cool & Classy: Take On Legends of Country
Cool & Classy: Take On Timeless Legends 2
Cool & Classy: Take On College Sports Themes
Cool & Classy: Take On College Marching Bands
Hockey Arena Organ Medley (Take On Hockey Arena Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddea59299061f7d4cff2f87e1ed744671bb9e9bd3016f7690ef89a7c6f614e3. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/USGN61400690.
Cool & Classy: Take on the Game Time Organ
Cool & Classy: Take on Best National Anthems in the World
Redlight (Cool & Classy Take on Eddie Murphy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cff77c0d3491be6e99e003b50a10a4dd43d49953d35d070db8b775cacd18901. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USGN61405020.
Cool & Classy: Take on Sports Organ Hits