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 0xbe689b2059463686628a8a72892642a4cdbee0de0dc2e0d45e718aa1d6f08409. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dff8a862-3562-4883-92e9-631dc7c5a39e.json and https://artists.proofprofile.net/proofs/artist/dff8a862-3562-4883-92e9-631dc7c5a39e.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 0x12f48d1359609dbbbfe2f8d4759fe3a50c178da461378cd51f81868f033a9c4b. 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/KJ7535532641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58144501f8f94b54c18793a0132d1a5824f27f89cf707def48d99261e319a0ac. 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/HKD012375125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ef45a99c2f2a0fc7bf966c9eee58dbff483e6bbf713cc39685d358f0cda327. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KJRQ11653173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0464d9368c6549e7cd030f01d4a52bdbd913fb5ea69cde1b4d9d6a1462e080d6. 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/KJIOU2475523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a58677ecaf290e601d50ad703396f4de754933590885f8abe4c61bcfb46e2e1. 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/DGA0H2454654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4800927588fb9e9dd9e46f1cb86253488f83e1aa5be34d04aa1accfb1c88cff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG732466208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f6382a6e9e76d53fce393082e1d69a02c495182aa8ce2193efd07dbc054f60. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKG732464861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232b6d459d097504369f32662562a5912ec1d7f0647780381b6b70f1ae0dfefa. 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/HKG732450458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe939040bfe73e4d0f524adb521f8d5a88d43d00bdc246ad8065c0cf8581f33cc. 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/MYPM12400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e01ee2be051ecf14e866b59b9bae14dec03a97e766d4ba4d5c4510032c75f77. 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/MYPM12400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a41c60bbf9b29a0a7597f0eafd81b9fec054d179ad4090d12bb851b8782719. 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/HKG732426946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc274afb1825ba734cbcbafe85b8370df19e1bed6ad5c35dcb4c08284eec2abd3. 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/HKD012496120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6368c69b8faefd458f3928d5e46d0e8d4cce3b896d64c4a0daeb1eba276edf5c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KJE8P8480536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7c113b55da51d398cdb72c631487783d946b48f7adf13b87bd83d18fb09405. 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/KJF1M5124779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb7245b63911c63e35b2efb4178e26584ab18abbf37a2369e9a2b395cb2ad88. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KJNTJ6488565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35839c59d77dc78b85587f51dc771d5b564cd11b6af1467c65bd10553cd6fb56. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX452474199.