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 0xa9c2b321941fa49ab6116f00efa759321ecdd31593f0bc0ce1d55b2df89f4b7b. 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/3fda9e99-0c42-47a3-8e7f-315b96df0043.json and https://artists.proofprofile.net/proofs/artist/3fda9e99-0c42-47a3-8e7f-315b96df0043.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 0x20223d520347781eae127c01c25c08a193bc54cc7928a27a64047e02366fd073. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRIDO2011682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc546350c4ad60a3709ffdb09cd1531986079470ecc090749e957ba100c5fbb74. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:56:34Z), 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/FRIDO2011352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e16cd66f76952c1d516698fc3f72b421ce46fbc8d1f99017461d4332ad1bbc4. 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/FRIDO2011677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab18b9d97560439f8a51daf88e49f414dbca4b4511a3d839a2ea9b54f6eaab2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FRIDO2011612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c504790cefbb95771d8aa078398333927bf6f8240fdd702e6e871c570e22dc. 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/FRIDO2212341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc927ec9d1d06ff99f4f6c40d71a7cb44eebc5710608b15e80ef670ff6db44726. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FRIDO2310430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1066ba02bdaf928075e35d59fdedc1bf9011fbb90c2badadc9c20f77ee6ca300. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:03:13Z), 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/QM4TX2420199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341a7251d9e4b095f6c5d426ef79b58ff68acbf191aa6014a2d84e3c27c44cd7. 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/QM6MZ2406252.
SuperJazzClub (Live Performance from São Paulo)