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 0x51a93ce59117ebbacc4d6da4a1f0bedceffc2f010a5b95da51d3800991efbfb9. 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/3576a359-9989-4f9d-9e60-950cffaae3db.json and https://artists.proofprofile.net/proofs/artist/3576a359-9989-4f9d-9e60-950cffaae3db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hicham Khabar Az Hich (No News of Nothing To Me)
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 0x692a31e0cefde06dc5358a47bb126af45efc4a8dad1c2bf2649c520ae485e51e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM7281980581.
It's Blue Here (2016 Nemm Music Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d66c4530049165218bc107bf88959d27a6f534a3608d817f8afa4882af7d2e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USCGH2069821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579c8b84d6d66807a2c1f68ca597efda65b420af2f7998b51f170882f52f3c33. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QM6MZ1897395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea6d5543537ffaeef895b406d6951bf3784b93e85846f6f016d6361dceffd39. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QM6MZ2023871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785593bf78b31ade76b8a3278878357aae9d39bb21cd0900ab80cccb8709db0e. 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/QM6MZ2198423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6feed25dc6dd525328a1bce60d14eb21a9e5ed9e4cde55aa8a8b4bb1f9b61b63. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:02:53Z), 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/QMFMF2105748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9023578750c492777b3445f8ae2fee54c4717e864785ffafb058e29628054a8f. 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/QMDA62159433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e425293aa1fd113b84c26911d8b7856a34ef4064acbc82063a80fd8e4e900a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMDA72165185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648f33a84eb8cea7f7d870333f7ca7da8d40633df85ccd41d328533204eec23c. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QMDA72165190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa423e09eb3c6f969ef282632052f251ebf60b58d6dd5aa94594f1a905884fc74. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:58:05Z), 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/QM4TW2286716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6386d781cbf63c6eae50a29c3d3cf55747266e3c5b2c12b1e056edd1316275. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:41:26Z), 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/QM6N22284042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42753919683a71991615426c228bd310215b0346a2e8155677fb483479a69495. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:56:38Z), 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/QM4TW2338332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd328b2e0899ba974e957c1826cd34b99966f3a2b181bcf4c504af3939a2dd7. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QM6N22397932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10f2918d9e3582b96bdb2294d7d4e09deabda32e322f19292ba4f4d06d59b3b. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/QM6P42372459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cffb30c439b33a7b5e985079503304e47bd99a11b5870d1e3d3f7705cf4f3ee. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QM4TX2426085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc710aed1cd55169ec464d441baaea697546317346c10f0abf9d684140cfab4bc. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMBZ92482751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c8a6491cd862b37db1a25ed20cc409a1ee40fe84eeafe817f962216b1c0be6. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:41:43Z), 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/QMDA72463795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf916b03ee11f21814cfa8cc00192c30923ae386d544486a52405f76715e07498. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM6P42592921.