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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded474611dc823368c8b37bb50642d3e3ce33b9641dae9c4990e22a79bdca5e4. 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/91aa6b9a-cf1e-4cea-8014-77beb3d1011f.json and https://artists.proofprofile.net/proofs/artist/91aa6b9a-cf1e-4cea-8014-77beb3d1011f.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b35f26ae36de4a1a2085824abee08ef864b5082a47d7b76ead90bfb99f0dab1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM3DF2137896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ca39a401cb800194f280d29d8bb96aca31061e2fd32d6356ee4d44a8efb4b8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM3DF2137901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b5a3609a792b51104687e38e312ab80327d115427674e31fb2746a7d4b6249. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM3DF2137732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a67e38c547be99776535933e28eef46f9680afd892a784f686e3c90168c196. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM3DF2136842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922cd903e48da1cdf93558b5f5af8c77f95e83cfc526e5a17c813818e8673f88. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QM3DF2136843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65b060363d3cfc7bf745d5c174512e753d5bbba36c2004a1c0ce2b47620169f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM3DF2136844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9bd52d35fb80592dc39cc406805447119bd6571804be022d01361395cb1726. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/QM3DF2136846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583648ab299454ef194d5fae10fbb2025414ee85b52d82887f551b8538d185e0. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QM3DF2136848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7314b8eda78ca2e5db60bb977b9dd84dcd88cd64e84446a4cde6c678ceb31bf8. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QM3DF2136851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274e4f590e79704e1ed12d407d9f4e331a7a7b4fa7da5813dab6baee6c72de9c. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QM3DF2136852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c75ce2387f57bc6a2017ee66143ac2c2e00666bd41faf459850ce3bc3f0cfd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM3DF2136853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0faac69a425303675606e9ee94698707fca6744761bd25a6e71ec93dc1056d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QM3DF2136867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaffb7217f29e56ba041774ca79ea096ea7f47db9dbcc5038d10f48fca9ec626. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/QZRP52175356.
The Boy Who Cried Wolf (feat. Skinnyman, Supernova, Emceekilla, Karisma & S. Kalibre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076d4c9887a5ba3f06354c24f91839c7d56263afe40775789d358be7adbe9b48. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBUAT0800508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc538108bf0c61e8c3089e1ad87e0fa0ef9ea19a780a7f0b1049c259d9b6da634. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ESA032007007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a4290988f8c891feb35c98d2576a22ec23071bdd6cf01655ca8c6594fbf51c. 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/ESA032009513.