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 0x7ca320bfa98a73eb220470bce1dc83eacdbeabfb5688bd5e200f5538e87966f0. 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/8e7ac0fe-4dc1-4526-9836-1b9073aff3b5.json and https://artists.proofprofile.net/proofs/artist/8e7ac0fe-4dc1-4526-9836-1b9073aff3b5.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 0x25dc423aa6616875350f1fe6764f8409ad6a4aef9ceb713e645a3b2a728f84b9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLYK92400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c695839d1103a78aa6d522082ab5c30877d60aa4453342ed95904f528c6c72. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLYK92400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4cd4678e5c2c97cbebb56e6dde1fd3bb1aeef6ce0e434f68ca8f76400cb1a1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLYK92400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9731ebeb3aeb8fc4e39bc143468505060187bd8501ab5f9ef28815002aaca2b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLYK92400159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d23de4b9f9839ad8248a96c28a850a3033c6d836dc57827e0b10c95bc32869. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLYK92400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3553deb6faa7a61a61a0032a6689100bc0509197cf4b62e9bfb58d945911d5a0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLYK92400144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dad22945913f3bb94a3497aebeb81455ddab1a98c05e3d5b758aaa6cab551b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLYK92400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d7f0e4c2de62fbcc7c4741ed1d4d9d03cc02819e97dbd948354c19f4ce7a73. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLYK92400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a8f5a47e2038d6ed52c9e750abebe2990b243e0d0dfe2a7705a11ea9325e82. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLYK92400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cad97fc040ff0c16f59c75e8a8c7c6f06f3598c1a63a6c7ce33d9289417b2e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLYK92400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd018c117eea8b4b148f5cbefb1f088c7224e29e0dfc579779f1e6c883a2be948. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLYK92400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f04e4859c23c5da91f48c3052685ec1ba97bd857af6478d47a485a38d03c3b1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLYK92400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9592e95701b6db7379ea2e97e9c4ab842482630c812dd6a36f1d89982090d00. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLYK92300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b7732c830b259cb88523972c7c64637f0a24078654cbc2c0504943d0cc5182. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLYK92300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d829096af46777f08c8f30d839b8d415d0ddb1b52572e589eb2fed2880e4cf5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLYK92500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b132b8e6104d962d4da7ca37fe9d8581383deb1171113e70054499f7ea60df. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLYK92500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adf279e20fc35844f0cce8389523d804973a4a45fbae7133e3ac28da98aafeb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLYK92400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e0c9e9deea85bec28f044bcaeb8fbc9fc509a94aa335d1a040122cfb884afe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLYK92400181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e6ca19b69dfc8dc9a981d8da3733156b35978bf729a5ef3a4e9f54eca3211e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLYK92400318.