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 0xed8799610f2a50d1da8156fd34bdc6b847712ac637da838bff2f8117ed58af5d. 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/27fd5764-ba1a-4a95-9ab6-747b637eb98c.json and https://artists.proofprofile.net/proofs/artist/27fd5764-ba1a-4a95-9ab6-747b637eb98c.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 0xbf512778c42ed8523841560ac66f3351e710c3f34d2b619e46ea56c9866159b2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CASD10501105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f166ca2ed0205df20bba8c14b4c8c27627fe208cb420da84433ccdaeaba8f9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CASD10501101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1177c2c6037ba7011db1bceccf5256d8be171c0b98a89d4fee6eca0bd47e3a03. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:40:09Z), 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/CASD10501106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb074fb490b08f310ff9ca953ee8e991370fcc650a32ffe44306e419b808a5e2d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CASD10501109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657f428ae7d4c07db8d71f871e4ee5a50eab2704597dae3f790263adb6e9e03d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CAI370610783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84391c94cfe576582a3e083ca28d4397c8fd810f8b2bc2caaf57b5d5cccb61c9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAI370610784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb352cc4a1083f2bdbf8f6af22d1f79804934d96c19b5af4e9c1aa8d5555331b2. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:05:09Z), 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/CAI370610786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfea29df859886dd155c1ce0995614fbfc027007f09feef2594490c59af4b13. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAI370610787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8104b690e1cf996f3b1be83cd94e77c7cd632d4ebe32dfa5b41f679446887838. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CAI370610788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52cc64d64de64c11ee5eff31ebcd01e02fe25e97514df826bd6dab313f0c410. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USY280717765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f4d7f2b2f3e3c00af9114b8d1f52e59cb6af6ccf206fac5676e193cc732f62. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USY280717773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aba139fd5a577ac648db378d9e62d9ea570cd76a225f04331e10f433b5ad74b. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/CAET71300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b65aef41360948e8b6f4a167ebc4b47057f73f01a6066bd62d07e7b1e440b11. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CAET71300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebd268b27882db6e8d27f239a92badbe165c88d46fe95c83ef17e7d6aeecd71. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAET71300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18160aadbe67f9c4f4d1ea827ad3a049e284e471caa806182aa24a8624e49fa6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAET71300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1441db452b15a74f1562ed7c0729970df3fdb60711f638e62c87b79b655d0dd7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAET71300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4b126e5c5d718dcf1bc6d97e3ffd9dac1e036bf9d04610bb3f2edea6507859. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CAET71300011.