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 0xeeef40c90e6354dd711967847cb92c5dbd58b45c0983ccc241271f21d5d0040b. 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/37223c86-4277-46cc-a1d1-61baaa9e3605.json and https://artists.proofprofile.net/proofs/artist/37223c86-4277-46cc-a1d1-61baaa9e3605.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 0x2cb884398b84ab61d31de58d25c8e89e1c6f6af6e4f0d9f9d4b07689df9cfa89. 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/JPG102300628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad2a431a6ac0f0773fb26916588a5c5aaee6c2053302f08d5b5610a84748ec7. 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/JPG102400426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a124b7980ed1ef6ac1a95401229948701bd985d2ec6ddc223ce125cafaab5f8. 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/JPG102301067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ca8aca549fa21477dbff4e9dd4bba8233eb63f40ecf6eae81c6770cc0cbfe1. 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/JPG102400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f17b5d14dde4f66db43ad0a1498abc9a830b116b9d2a073dbcef9b828d68ec. 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/JPG102400774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75d80aeedb1d5c2c1a4bf85a336cbcbf721508fcc70d7f4c1dcd087ac61d6fd. 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/JPG102301529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca48048acca730cbebac0efb55edf173122198750d0119c21837391a09c7d4a. 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/JPG102400775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac708eb270c7e9ed435b3cb50e1851a079ca560b2ee7b7c970192067cd569664. 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/JPG102401588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b17fc48f465ec6312f80947f9673a313e30911dd20700117e3128094160a96. 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/JPG102401135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75d80aeedb1d5c2c1a4bf85a336cbcbf721508fcc70d7f4c1dcd087ac61d6fd. 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/JPG102301529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf778e91b4034f021c56037bfc60ab88bce1dacf0aca336ac390f1bea0b8b2bb. 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/JPG102300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a85cc1e82c712a9a26469ebfa70a43a03230d4940ed82d9d5236fae0712f04. 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/JPG102201616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349bc574052138a949ca1430cff118a3c79378e0ea924d2bebe69ce54d285f75. 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/JPG102300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efbaf500a1a12d617cbd0a37d71a27b2c79df3a1066cbe2987ab9b12a8f6354. 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/JPG102300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42193cf81f4f9913ddd6d0a9a1750bf3efdeed6434dbe948118928ad9e5420d. 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/JPG102300218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efbaf500a1a12d617cbd0a37d71a27b2c79df3a1066cbe2987ab9b12a8f6354. 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/JPG102300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a85cc1e82c712a9a26469ebfa70a43a03230d4940ed82d9d5236fae0712f04. 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/JPG102201616.