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 0xcbcf3136bc8df158008c223fa05ff46f07be4dcbfa34500dd8de750ef8d1cd1d. 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/57922669-67e1-4db0-846a-0c9568c55905.json and https://artists.proofprofile.net/proofs/artist/57922669-67e1-4db0-846a-0c9568c55905.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 0xea96455ef14065bac1b72d8b30d4071d3b5194596a10fb1f9552e51fa9c9547b. 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/PLA552300732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78bb74dbef13f9f2b9f5224a4aaf648ca9ddf9ef6352cdf31930a99250f93db. 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/PL2DY2400804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf92ed99478094770f3bd91c7bf4029756d3e6a4f04670f1c159a6874b30f58a. 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/PLA552300728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ad3e8fb5c64ca9da246b1446d17cc118bb9d24bda747989fa6fe9746a54292. 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/PLA552300656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e48fb9feaf277c51049c007dd3fd1915c965a319bfc7cc75549937096de922. 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/PLA552300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614d1d58c7cf13537037ed29821733402aac7996d42c25b11422cd5c1bd80f9a. 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/PLA552300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632b524a9876ac6b72f5643dde394ebfd3ec39f5e7c8d41c9eed430d0a021c4d. 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/PLA552300273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f59049cafaa4aa27449fb42f3a2b72ab16a0aa37fc94b624da62237b577970f. 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/PLA552300729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904fa3b7d1d2490c01c78cb7727496c4276e487feba20d39f4e959d4ff9ededd. 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/PLA552300730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb640b20c7b084852261564204e939516b003e145b7f699ffbe5f5f7a8d58f0. 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/PLA552300619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a69f03d863f52a27d1693989df6ea81a3082588957c27a7fe83ce0749837fb6. 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/PLA552300731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea96455ef14065bac1b72d8b30d4071d3b5194596a10fb1f9552e51fa9c9547b. 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/PLA552300732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d4229f21dd38e84ee84a38f4b4b82bfc76d834a491bfa31d50ca61790551c6. 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/PLA552300733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce0bb3909e024c7f99ce64c8a556171a052b4f5aca92f3bd58132f90d6f42a3. 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/PLA552300734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5145146850eae82006cb5b9745f8cf1d83f56900f8734f883fbbaeb301a470. 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/PLA552300735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4581d7916eaf96c1139b2c2ed9e1f1106345571dfeca89bcf21b976d4f9c79d. 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/PLA552300736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494306fa103cded3c8859e73691bb8dc68595a5cf764c3bcdd6272e468d49baf. 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/PLA552300737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec4d7cbc9ddf59854bf02f5e71992a80c2719b3bfaa89b2802b9f95ff8fd5ed. 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/PLA552300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a35ec9bcfe5a713019ea174e31f21274aa05dd673d2974c5f52365dc7cd0090. 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/PL2B92400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0947ffc311ae04905ed38d8ec2e6ce04be8dc6f0ab0633c536a49aa031e013. 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/PLA552200785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd29fcf3f0a9cc9899fc3ac86b4be86da572dba35758254f0e6b8354134448b. 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/PLI362333128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb97b7dc37363f6d7a00d93a11dee8d88a9fea5433174582b5ae88510b66d286. 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/PL2B92400024.