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 0x24fa70eef74e16f210574f8071be02b05b312daacae62fa926cb9b2b91e0545e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f8e0429-8403-4cc5-be8d-8785de68bc70.json and https://artists.proofprofile.net/proofs/artist/6f8e0429-8403-4cc5-be8d-8785de68bc70.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 0xeac67c9c1f76cc18464870147d36cd5556a5ac20a1854a3e171e9221ccf5c3f1. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GXD7V2526700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb40304d5e345386f4a0fd743ab24b8c55802d677bc8874f7ac348e5c4840cf2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GXD7V2507491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e6204067cb22b22f7624de7180d831726232498c69b08947bc24023a1b7de8. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GXD7G2583686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e46c58aeb2ffb8e756e4cb0e69cc64d7d52e1f214553746ab0ebfca8415a616. 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/SGW502581556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe194c5b8eb164800a5df1f96c9ba751458dd63d9857395a178a6f6668dc07bb9. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GXBAV2177179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f943974424a613a571d011a135da746237246ea5064a6daa05affd65d3d9b1. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:48:09Z), 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/GXBAV2130015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf790bc347c61cefbf1bf4882af3447bde243be6fb3e9962759ecca93bc6ed04d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:58:17Z), 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/GXBAV2181744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9767f4724523cb505bdc3ee75311ead114d58459903279446df185ce1ee93f. 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/GXBAV2059022.