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 0x92572aa7b75f5d29a5c943961aed2fca26dcaf26915e99644f33c93eac93e3b5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eaba75aa-6879-44b0-8ee0-6686609c0ea3.json and https://artists.proofprofile.net/proofs/artist/eaba75aa-6879-44b0-8ee0-6686609c0ea3.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 0xb82830f713bfaf3a67e2a471bc7daeb92d9c7450945a88fcb22d1850d5b26e51. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:03:22Z), 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/IL6191100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7641f1c7d26e6a71c548eb6f5f40c440f40ba708cd62cd1c4830d6ce23ace0e6. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/IL6191100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d11b61d075a46eeb3e9408063b388700fbcff29c53f9e7a3edcb79fd976a496. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/IL6191100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611f2c935bb636e82aa6987aeb3ca474ad0d89b71a807c96e6ed28d727a3ee49. 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/IL6191100060.
Happiest of All Memorial Days (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f31b66830dbfde9709d826c9876f660e948748b43a1adf9cb3241d232305d25. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:34:50Z), 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/GBZ521410201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd78bbadef82dc3cc2cd8e30e9e1a1196541cf49ac3a1cbd9fd72557ba6f788. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GBZ521410202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c67ed9906f2e5c9534884d7c5f2c85746983fe8bf6ff69336978d53a76bda9. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/IL6191800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd1333862551d8cf1a99fedbf956cd69c6499b0b4d830fa90a01c0226754314. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/IL6191800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825ad2174850e7c0b14ff8941d914d1b73f30f4cead3874e8e60f2f1736294bf. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:33:15Z), 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/IL6191800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be215a1f00610eb39dfe5d19b52c763cd781ace27dbc1c9408f90c84f9d739a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/IL6191800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990f247e24a1976bdfb79bfdf8ee482ae802fa597260e1d4894d5dadbd4cda75. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:04:20Z), 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/IL6191800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf6c260ac65f6cde733fa61eaa8f87f0d8e56341d9654a400da45cc821c5876. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/IL6191800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb639703a93564d77e3b4264a1474ac0c933f8b91ca30b983518327985cf2bfbd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IL6191800027.