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 0x4156068c0e17db5a7528211aa222b7957a2088e64861708e7c9bda172d6ea927. 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/6756b37f-dc01-437d-8a26-d917142f9a58.json and https://artists.proofprofile.net/proofs/artist/6756b37f-dc01-437d-8a26-d917142f9a58.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 0x0457123a9e792e3482ec5d9bd5b904fc4b7f949445ef078d3d687a718d5a87ef. 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/BXJK02300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7296d84a25b840035b6ebfea874ec532afe658cb08482cf8eec53b6a70b693c. 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/BXJK02300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e32ba2389199ea427fd44ee7a37ce9f5e521851cac0a2c5bb596d4021dacb39. 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/BXJK02300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef1d01c81d4d274dd614fbad244b909a3c59c493d9cd3195f5ad1effb456b29. 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/BXJK02300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aafd0fa08d0afba006681d615b7fd70ae0aa3a006449ae24c8c9d11fa52e66b. 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/BXJK02300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f1554742e243115e918e0314164578dd5a4842d846925f59dd7caf8e2450d1. 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/BXJK02300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57e201f002399c6af624069d1815b565508f3cf43246b71b420b50cc833ee8c. 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/BXJK02300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd17a58f9809cbebe3d06cb3f610d60dcdfebe62c14b64eccc3047ba79f39136. 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/BXJK02400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7a109c6aa02d48467197535bf5acb0ddde5f8beb38df2ee69398c5d99eaef8. 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/BXJK02400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c83a3eb2a3c1795d393abdf14779c0db8994c89a3e28b8cd59a0ffe9020b7a5. 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/BXJK02400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a4e68d1b1831b8ed88630224f93bb8e84878958533c712d8b0ea3b2483af55. 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/BXJK02500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b66a2bb80e2325221710924f505abb46395df0d9441d352671ad73e32b3ea44. 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/BRRGE2401136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd894b7c795bd9d1063460fa581904bc89820cd25e66e50d76e992de43c350d. 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/BRRGE2401152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aee4ec793fdf2d6b3e91fffbf5333b0520fa8e33d47e58e1cae98b3d331be2d. 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/BC0UT2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e7471e8d6ecfd36a4f59bd97bb58c5df7c7f1e201f3d574f586f63e4ca7a38. 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/BX7P32300666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af598c4b9b99d78b75c22b4a5f5832f55e6f5c30930668683e7616aac229c21. 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/BX7P32300665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa75c1410602acac883deb25ee44fa551894e8d012ff2eea67d7cbc76d1b38a. 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/BRWMB2300639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b781bb168342cc610e4a292ca79f08013993e3394a90a73ef4bf533efe8036. 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/BX7P32300764.