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 0x1d1ba552dbd9e8d1fe2cd91e0b32636a79f0eb49aad71eab3285da42a74b0cc3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c2befaa-5494-4dec-9076-cce3107a41ca.json and https://artists.proofprofile.net/proofs/artist/6c2befaa-5494-4dec-9076-cce3107a41ca.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 0xd42a8cab66dac0ca2b8c8f5010d556b2f054acbc23a633e9142a8b5027974573. 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/PLB382200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221dc7357c055cd10eff57bb70884f3094ecbeadc558fd1e6cf88d0138c66c44. 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/PLB382100199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e6d6b04d8683d16dc932773a8d386c0318788b3e0cbe86f7a2c0a40da82b1d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLB382200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c755822037fb73b3f2ba3127a9d5f7bbcf14b5f7c29e9d04bb4181b27c6a41d. 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/PLB382200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b395b151c12d3f719a7bcf4ed9a442012933af98f9b967f966d2e1d8cd6069. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLB382200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e9292fa826cd07d5b467ca175ee7d4372bc6087f6c5233472ccf7ff611ec50. 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/PLB382100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6dfd27ff9bdd80d37795a17c6aba7b80cf575424886b25629785d8d709a7ee. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLB382200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63a9b7969f9c233fae71ba3ef1486955132bc8813434d713208e03d7c6945b4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLB382200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa76ab0e657c04f7cd37fa38d9c9429a469e2800ef45eeffa45d5e19dae8c2a8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLB382200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa055eb3404618cf650edc31b83f41903df5a8dc43575aaee167ef220de38e8. 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/PLB382100185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd4cf5820bd8230f24d14daa75d3bfc58886a2632b43f7773f11d3b2eb9c679. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR10S2332044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f78f5056684dbcaa4f5a7df30f09950c669a6b51aadcaf0f24aca130fe0cebf. 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/DGA0Q2379051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33574bb4e90d732d6fabeea28984f0ec36e09dbc5408e2920c849300c5d0e802. 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/FRX762322377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb092a0c06ed5c1caaaee1c436952b19b225d055df392b96ca7b420cafd86fdd2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX872368179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a947966313eadf1bee7f70d9b3854512ed80b9ccc07f3c2f1f1e08efebd916. 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/DGA0Q2379046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f16cd61866408fc60960145b3cc0293aec91af1337a9621a8d6838bbbdd7eff. 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/DGA0Q2397350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb774997d5240003f04f03b34002757472124bf374ccac866fa93efbe2a4a6162. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA0Q2397351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9be2422ffb9e1c41a2200052e9f31054d07e4df63c9821058a42acfb5dd9ea5. 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/DGA0Q2397352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02687e480920bfd3991d7abdd06afaf45014ffa2f3c6faad4841010171383179. 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/DGA072342728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64052403c1fa406a15f5746d2c59310c0faa705ab096b4c29e0ae9c3021b8817. 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/FR96X2366575.