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 0xebd82b37edcb50de40d23ddfe53833b0673a6bfbcc01419831f9fd1b4c366f06. 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/3da1bd27-5025-4ab2-a8a0-d651613b6d26.json and https://artists.proofprofile.net/proofs/artist/3da1bd27-5025-4ab2-a8a0-d651613b6d26.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 0x707a3a3faff341ab9fa4c65df55ec56e16affb6d6061b3f6719a6644ea927b4e. 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/FR6V82639670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a571a1fe07e543d9e27a23e35f475c675a814f82038f30b9aa0709ef92b5f0. 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/FR6V82639672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fce21044bebe15d25b80442500ef7f182bbd457652c9a9bc4f09165fc7d3e8c. 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/FR6V82639674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dd2f8e3145f2b19ccdc9e3f51b29ca52c6685c46ffa3612ec93f6c6d82ab32. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR6V82639675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2502662ca99352161acb9fec5a907dde7b36e2fe918d7312875df995ea01a754. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR6V82639676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ed464c5bbb6fdd455f29d225b1a64bbeb4db45cd572dcff1b41e26eb51a7c4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR6V82639677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc223a61ada8c59e4f875041c01bd59ce5dc163fb153f65ad6081b8924dbdf67a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR6V82645452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0834f2dc902d91f6e2d6505ae256572a95dc25542ae4081852623d2e9aa47f78. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR6V82645454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08be715e6d8225190686cffd546d77429a28812ec93ec208107b3b1207cc1089. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FR6V82645456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fcca58e9d838a268a20db5ccb695a9a0f5629ad68a13a796e3419d06ca37b9. 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/FR6V82645458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa687fe01b64bc0d01cbcc91cf065a58ee7d67f7bab9c387f5d07c90e8af2a4bd. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:52:17Z), 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/FR6V82639897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224c9c62668559908b6a56e60352531ea14e0284b29d2bcc4f4f56720d836289. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR10S1423440.