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 0x5e69fa63d952d8d705920f769ad9af918c1f6ac51e4cfae126f072156fd80785. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c092dd47-5d47-41cd-b379-f0326764fee4.json and https://artists.proofprofile.net/proofs/artist/c092dd47-5d47-41cd-b379-f0326764fee4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sesiones Rítmicas De Lofi: Vibras Del Paisaje Urbano
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 0xb0c2042f3139aeb6fcdecfb723b2a9ca4511bd07046912cf563e2c8fc6d442f4. 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/QZWDD2405962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d65d223bb63a22978175d9f190fb354b9f5b35db77c5d0aaec9428b555bcffd. 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/QZWDD2405970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2860375977964ff832cc3922ccabcfc832e3d38326094159aa09f6bb08c075. 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/QZWDD2405982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be3c6fe86848dfefe54a601652261a521d80949c6973637186dc27e97662a8d. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QZWDD2405996.
Melodías De Sincronización Del Paisaje Urbano De Lofi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23966cadde0c077c3f450dfdb44263ccfe0cfc863a1432548996390fbadea589. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZWDD2406004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc081f98fc3867afb5a23297b0ae8e4185a66321e48b0f82fb962b13b538f1cd. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZWDD2406014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488bec6f43057b39ead14ad1b9d4758b233ad38752063f9e07f37011be581ee4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZWDD2406021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8311bd61624be02781df3fde160e34c3a967544c68bb2092002e9a4982d18ce3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZWDD2406029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce6a8a251013ae01f7daceb3f9a0b6e7d36477059744d68acebb767c61a20ad. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZWDD2406037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1072e21a5746491b03f0d1314bc54e778921b78c7c21ac472c43a1ba7b5038. 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/QZWDD2406046.