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 0x82ae5213fa5b7d1cf0bcd98ccee718a4b8222f9dffc2536aa8316b9400a179ce. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fda5e977-e58a-4184-b0ed-5395444f4d67.json and https://artists.proofprofile.net/proofs/artist/fda5e977-e58a-4184-b0ed-5395444f4d67.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 0x33dd841fbc1b888f87e8e1e993e3be590659536a60cda62df9d510b257631e69. 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/GBMA22435107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a284ebc09d3f6ca57b1cc4eb94f894d0c10244daa7471322a07dfd2476fe27. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBMA22435108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d63647af48ad2b1786f400a3b7922f1ff9c94fa10d9260547f50007315beb53. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:36:22Z), 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/GBMA22435109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7ab241cdd26bacd51f2651078cde064a3c9a5c46d929d6b8b9157e491dda7b. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/GBMA22435110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1319a63e8c643bce30ff3d757a405381fcf83814d5c4b0215956fe9c870bd73d. 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/GBMA22435111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2327ab64f62f98765650d53204599631fe6e9ccbb08c373e8c9aa6623f41842c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:51Z), 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/GBMA22435112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660c74b177b04c930a11a754bb200471585d2ec5067d779d68ccefedd0f84eaa. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBMA22435113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b6002213021225179d4eb83bb2439316800f285c8d3507c9dbb081d58cf383. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:48:54Z), 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/GBMA22435114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c88ae7e624142ae370d70e8a956b8963654b50b87e7baacdaea6d8c5f843b1a. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/GBMA22435115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0aa2b2a49bc615e703345a2277740f3e8bb3fa08f367e66fd8b8c4cdaf716b1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBMA22435116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faea5ebb67135509084d4358c265d8d10b8dce6d4b5cdcae9a1d88a1f46616e. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/GBMA22435117.