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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d521bca8c4fdb51f003f0b275bb27a55039bff6075aee15cc3b1e812d169e9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a882e1d-edcf-49c5-b462-5e6586a41fcf.json and https://artists.proofprofile.net/proofs/artist/6a882e1d-edcf-49c5-b462-5e6586a41fcf.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf6c28ab9eb5c76e43218fc66a049d7be0c4737536e1ba30cff45f734548c58. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6N22119772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c431c31afac96f4ec47fbd2679f528f6ef59c1b5a246e73d69efe9f5a9f6465. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USSM10504490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea57aed6a16966e7234aaed2665d31166a2c135f1c4207607afe93b0e77b105. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USSM10504482.
Maxine Brown - Extended Play - Gusto's Top Hits
Bella Mia / Picked Up, Packed and Put Away
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2168c234271684e1f4487ab8be770bbfcc48906eb0605488a197329afcdc7fbd. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBVVQ1600887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3477d60e403f2d5670e98da3636117b17da3e4d4c06c67a3a19b6d9ebe419293. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBVVQ1600902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e1555b16896a500bdcef9dda9ea79cd920282bc2a80fa00970020e11f0a2a9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:10:23Z), 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/GBVVQ1600904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6400df2274d1f3b9a874d9a70fe431055dcf3486406ffdc46771c22aa5803913. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GBVVQ1600907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ef41ac8faf4457c65053b2aa35081f3815eddf16947429ea57cf9b58514eb4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBVVQ1600908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0831544a8822a4916d8b7f33dc852c226fefea5fe187d2f35cfd1761f8df95c9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:04:45Z), 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/GBVVQ1600913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f407b276576016360a95c5f68249889c083cae201366ef7c451fbf3551a299. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:43:24Z), 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/USACU0501843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e54265c43289c1e731fe56182ea942716074f3ad29d62433bcd3bf8dbec161. 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/USACU0501665.
Picked up, Packed and Put Away / Bella Mia
Oh No Not My Baby: The Best Of Maxine Brown
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf00f432e26110316f4a147007834f02c6bccfb9436b086909124a46d2ef403. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA560601251.