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 0x38423f3bd8a2ccbc8dcd9565e5785d41e4cb27126755a29df1436e82e4dd8945. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2770a35f-67f2-4355-8150-43c7a660bce4.json and https://artists.proofprofile.net/proofs/artist/2770a35f-67f2-4355-8150-43c7a660bce4.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 0x1cac9b301ee80923afd38b0e4377d6097dde8a9913c92d450e7bd6dc42f3961b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAHP2358008.
I Don't Have to Cry ('cause You're Gone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eede64262568926269461f694ec4f3f1b1dd88e9e18186af95a2241ff26ba21. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/US6R21391249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbebeef51eb1415100fc561a33b872b59098eac25593cc890ad0f1acfd0657e0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US6R21391250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc7ded73809bb2e555b97af45250e945c6397f04e15dedd51f66af2bdb726f2. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GBHCD1713083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bc78fd40161508dab1880a535f4b80dd84776c92301921c3f1a50c4c687931. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/GBHCD1717273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf61af15cec6c4de22a605791e431b785b07b581d072d1ad66f9b05817229d4. 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/QMDA61347173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b949e72f223f234de257b6da981361f2cd984f6b1670455b3360e558221d5b0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMDA61347175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3105b1f1f9edb379fef7e8e71ef87f1bdcb483fbabbec4ed7fd58ef8819ab61f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAHP2352750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a40246cc083a3539c7bf8fbe923364dd38ef7f05a9d6c27101d38e99f236f6. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAHP2355769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1ab683a616eaab1982dc1b43377b1ef556a562f64b5248c07e9c24e02b53b1. 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/USA561086170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ca5f2e3469ecf80893bd2fd2a64148eca23404cef3ca291533b8d1e0ddae92. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USA561086172.
Christy Essien Igbokwe Greatest Hits Album, Vol. I
Seun Rere '83 Seoul International Song Festival Performance (Live)