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 0x0a147e30e30543061601c5a62858b751e1ec807ec6154bb759259db0a1ef63bb. 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/3b321d5e-fb52-4720-af36-8df934e87b10.json and https://artists.proofprofile.net/proofs/artist/3b321d5e-fb52-4720-af36-8df934e87b10.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sampul Surat Nonaria (Sebuah Persembahan Untuk Ismail Marzuki)
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 0x52f49d8377afd63d6c2a2b290e1f9991b9054bf31f3412869fdeed075d0164ea. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:25:56Z), 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/USCGH2134971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2240e58e7d4b225d5ec7fef5b573565e92906244574be8ced6793d0bf4a7ba24. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USCGH2134973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5dd148b97537ccb3eddf5e52ff06b820e3580be40ca61ddf2f83378acdda2b. 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/USCGH2134974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dfae655906d000bf5aa8d9d0b666cd9c4fad09a3737609c97f49273fe11c36. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IDA142308561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a74ad6ddd7078e65e3285f5b656de4b1b51b4681df8465113db2c137a0b6b7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IDA142308562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3ae3a5cb7e4d788b4d06bb82a21b6e5c295693775ed9ea71d3b7d52f78e8dc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IDA142308563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677096a98a4eee3ce433f81ebd6e894ca60c57f83ef95912f5283a6f11a17f8c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IDA142308564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72768292b5af24194f624239d30e8f6b1b4a64320929909ecbd5ed6a49803e00. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IDA142308565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca6ec4b2bb1830894dfdd7498f35adf4a1b035ace30089141714a655109d2d4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IDA142308566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e011ed580ffb59e522126ea5a220539cff55fc8075e5676430c21a779ce4115. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IDA142308567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d696d6606a9b9156ab176307ffe530073d87365c73a6f2a2b9f0ba5b6d0823. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IDA142308568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d0a46f8184910574e7d7768e6f6c01cf1e121e4b8372f2628be177652142be. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/IDA142308569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b5745a610f4343616c6306ca1081f8c3e87234ec6cc6e8a4ecddc96895860e. 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/IDA142308570.
You And Me Against The World: A Tribute To Mocca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a30df96b08865bb490dc891ad56192b48e42a412157e8190e9aeb1f80292148. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/FR96X1997171.