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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f146899656cb21556acd20218d0463e7121ff1ba64572feef7161350c890d3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c53bf1e4-4c35-4691-a701-5dcc590756bc.json and https://artists.proofprofile.net/proofs/artist/c53bf1e4-4c35-4691-a701-5dcc590756bc.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8ce9e5108ca5c5861c3439e7237633a9e8c0f500afbc3987fbed59e365a11b. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ITFR82500001.
Salomon (feat. 9DEN, Michael Mills, Deepho & 72-HOUR POST FIGHT)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7456dd693c92ff837672101395a37b21b9e3a9572c4f9ac17172ad909c28dc. 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/ITFR82500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e480b8b2e9192957e844cb7693d3203fb53cc4df9b33fea502d622b0108a676. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITFR82500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271e25c8e423bdc3498bf4740efcb590622111b7c38accfec0c6c32bb0796eee. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ITFR82500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99444457cb3a2bc3f62be31acd33a0ee71cf08b7bd190db1d6c9323ebeb8234f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITFR82500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e13f203b948b84a210193b7180cccc23e1e5091c28e8cda509f715871ef5d5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ITFR82500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad75332aa37c38e3875dba591c7b0a1b230aa0f0c4623fb713604a238a3eb95. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ITFR82500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37534f0c8b20ca6045bfa6ef10cd0495377c84fe628747c9fb5a06c98fa54317. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ITFR82500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826184a317a8170b3ccae0144936e95b20ca16939b36dcfe862d701dd6554ea0. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/ITFR82500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62121115e530097cb92e8e98198592c3490c71057df1ec056d7e37668307ac2b. 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/ITFR82500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dea1b925b251ac79a80314926081283d2a01de713175600f49c29a26fcd208. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/ITFR82500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193966a03d79211f8da982073182ca6f68e02055f83e73b7c280aeb8ce56233b. 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/ITFR82500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1667a3f20c89ad3c19b0728e14ceb878c9272f95d2a415bbba21ac4eb7ec0206. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITFR82500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda29bdba03bdda56086bc3e961258d1a440643ba9980f6a5c87f316fb5a4be6f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ITFR82500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776d8cfd13aedd3b04f3ed0590cc3eb453fd34b35d52dc17846a626f3c8281fa. 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/ITFR82500017.