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 0x32f155e2077d08bd9e5ea50c3037456f18ffaf784b9de7539915f42b2733cf60. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5023f72e-189d-41b3-a283-a4c47dd46e91.json and https://artists.proofprofile.net/proofs/artist/5023f72e-189d-41b3-a283-a4c47dd46e91.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 0x6feca4daaed47edf59fb9311d816d93b8b42a1c15e9d562b73d2c723adfe139c. 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/USCN19500124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ddcd932bd6d2f208fafaae5e1614c5061def049512d186cf386dc2a453cb8c. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USCN10800414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3510ff4ffe9a2b0b404c3f7d1f62437d88e722201f594471aa84b63554afc99a. 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/USCN19500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008638ef3ca4cc3e5de242d2f292cc7f016e5ca9854ba76211e459c2fa01b44e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USCN10800415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8efcc5865e7a8dcf5bf87706cf2436b0b07655b662c625b8d5de3d280d5cc92. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USCN10800416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795a9e965b4d28c25c5b006df106b32c508678b8b2621961d1b598c959222cc4. 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/USCN19500122.
Hace Quanto He Dicho Que Te Amo (Have I Told You Lately)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c1b71eaf5adc35244cb4d1f1ea1b159d566ce01c08111a7e0cab05154466c3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:03:33Z), 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/USEL19500438.