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 0x6536c36c17c9f565425a26a31708909d2891032e9cea879afcb05a75278636b1. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4071ff1-ed8b-45dd-a8ff-bb3a0819deef.json and https://artists.proofprofile.net/proofs/artist/d4071ff1-ed8b-45dd-a8ff-bb3a0819deef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Public Service Announcement (Ik Jaroori Jaankari)
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 0x14f991ac4010e22846ba5c811e5f21da9ebf391936df71e475b03768dacf504b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES92453409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447162c25eebeb403e6566bcd4221dfdcc1cefcc1f42323176bfce47a392a0a8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZES92453410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadac4c5ed3a02fb728415135fea6cfff300cf5ed29dbace5b111294a32b16655. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES92453411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb44a6c48af6f385cd3295c3458519c55282664c42da75d46dac47dc99a9b4d6. 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/QZES72487301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb44a6c48af6f385cd3295c3458519c55282664c42da75d46dac47dc99a9b4d6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES72487301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb219bf8184881eacd9bc04b81abb7551a9bfef5041b7c445b2569240fadc786f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTBA2342800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345738d37d4ba5a1313253bf74d619501231314d79192ce624669e14212b8833. 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/QZNWQ2315062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2599474d28ac9df277f064db2ef61c15aafed08b7fd58d5db944bc9ecfc92ab2. 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/QZK6J2330541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00c3f5d3de5ffe34a652b8ee9ec6dbcd233fa9453932db53a6f98caa081eeeb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES92375977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8334e5be10dfed7795a0b74dde66035180fc77380a5b1ec7d179af3a82e1596f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM4TW2355772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffe1d15fb393d5da7e9acccf6ec2b5c95a7a03cb3a9625e773752093ae2cf47. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKPL2147328.