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 0xf58de288366df24fa4403ae55e0774137161aa0c1f1761630aed8707556b7494. Chain 2 (Bitcoin): anchored in block 953782 (2026-06-15T12:13:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d51e10fe-f30c-4f0e-87fa-6e68ddfbced8.json and https://artists.proofprofile.net/proofs/artist/d51e10fe-f30c-4f0e-87fa-6e68ddfbced8.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 0xa199ec713f5280efa5841a5a8d17ce131a53c9008c63c8c58900145abcc4ee48. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:08:37Z), 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/TCAJH2536353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1fee7f44aad6fa889c00606281b0d32ca87cc826dfd154ee93f55926662112. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCAJH2536363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b346b760ea90d5bc4d92bcb8a4f416806b82db269e96c72ad9a1f4463fd6baa. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:06:18Z), 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/TCAJH2536373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bfe3e042ad1e50f2f93d602420b515f0cfbb59d17e462368f7f599c119adf7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:52:38Z), 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/TCAJH2536384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7741b50641dc2df135dbd6d0a712571e8fdb3049149728b5eaba14d77bffff. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAJH2536387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4d66eab931d26b5cefb06b858ba612205c4b165d8dfbb6a03031b6dbc25e01. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:00:08Z), 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/TCAJH2536393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc34d5c52daffa1aa0396004ca57e1d525e0a2b06d6074b4d0a094801767343f. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJH2536400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0b6db7465f492540d8aac2f6d4b0dff07accd41cd59d94ca0be1780d0fcc2f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJI2536416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82759a2d9821d0a99f10b50c911ed7a630f9e92177e25bea7cd4a6a2ed10d38. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:16Z), 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/TCAJH2536419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb496379592a6add096f57ea1543b7435fc37d8ad41b82ce205285b182290e79. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:09:54Z), 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/TCAJH2536425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe67223199702dfc12583ca352c5e6abbeca46d47f7fe22f5ab45a000fa7c5c7. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAJH2536430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a03b80f465608ede8c0e4e786d5980b99cfef3a68ff0e5e8c69e7768df0cbae. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAJH2536434.