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 0x783d7ad0db08aacf03d33b2d7d97a1970af382a8c6f5b00e330af03c31bf14fe. 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/e1bf967d-178c-4e9f-89e5-0eb3e67c2156.json and https://artists.proofprofile.net/proofs/artist/e1bf967d-178c-4e9f-89e5-0eb3e67c2156.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 0xffcd414b85903bab315ac777e644511eed605d9e79f17561f3f1c76f45407bac. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/QZHN31912971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70971702948586fcdf4f20334bc91f14d86872c697c4b82957cec9ce975b054. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USA2P2007806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1eb95075db35b141ae38437354e9d9194b96ffbe371c702da988c4a921cf726. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/QZHN42043686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf2c13a4577168158d7f5649b6733b33d7c3e669627abdf2536851b87e8bd6a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZK6H2025966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cb02f00f4dc53f597ac4fcdf36a2fed554129a1e32d58af8b80313a07f0aa7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES72112733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e08103c54d23976e7b8875f89484f7125866bbb184945e77addf6539e7a4b40. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:01:44Z), 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/QMFME2143569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b3e0db542fe814ff87a45e2ab94aae705dbfbf407f78ef6cc54d30259a2db8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZRP52103771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6672a1f95f1aeb6500c15b800ff39e23790b5524f8806121d47ef1923da145b4. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZFZ42259015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282b0891189e9dc82ebb8616a5b88b2d1e6bf56a1948d8da278002d613346360. 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/QZES52242253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b00ab9e208641ba632880d62bc643c96693b47a7b73dc76d6e0fb9300f436f3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:46:42Z), 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/QZHN42205898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7313a33502fe03629665e13bd038990c56f0da34202c408ba9aa43a39564d017. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN42205899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd468d0adcba08fc909c90cab077169984a227155ab43cf633ad385eea55e832. 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/QZMEQ2202835.
Lovin' Myself (Eric Kupper Remix Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa343de325f7c03d80b81ba0a91bb50a645bf84eb23aae573cabc5affff4709. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZHN32347661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaeec4295f259c2e8254d4bae6f69a6b74b001955fa9e283d1fad8c2ec0cb3f. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:23:04Z), 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/QZHN92342148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0d39e24948b9d6e64a69fab4800eb08abdab8227b3e08c28891e84c49aa544. 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/QZK6G2349848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a2e734d731ec6f25527f239c0e8867222213ba43af21d1db3fc17159d937e9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM92494986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29983ced0dc26067a524acfa7d6cef6beb3f5678679b2eb60d1f4058a287e4db. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZDA62570400.
Let Me Take You Dancing (Prod. Jason Nevins)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f17969be80d05c0c82ba7d04a71096f98818ad29dd2c7ea9338a564e1900a10. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:06:54Z), 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/QZK6F2581906.