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 0x0530d237d1b82441974c4dc42d9d925c24cbcf9066e2ca394473a99c6b3ebef9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06a05ed1-ece1-4a8f-bc87-91f56c4fd8be.json and https://artists.proofprofile.net/proofs/artist/06a05ed1-ece1-4a8f-bc87-91f56c4fd8be.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 0x9eab3885b0c03966557768bdce53a6bd187da793401063c6b2fadc924a181801. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/MX5061500129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434423d52fa7c5354333916daa434540efda17cf0e37bcd828141ba4f3820e4d. 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/MX5061500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89ccbb45dc0f791d453342bd5303f588ad14be34454d8b2316e80dbf529b882. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:17:39Z), 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/MX5061500131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9315a7300aebcc7083c456a1bb4e911665068a3026bcb8fd14ecbd6f021d6206. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/MX5061500132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2544490f88c24949e22b9103c7fc3a16f19cb4dfba6e41ca6db0a3d325dec6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/MX5061500133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353da512a9d7f62cf4e99e70c636ba8f91f493cda771ea641d1de64ece9ba021. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MX5061500134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280063045e01ab5d8430291e2542df058e255afa2d64220dcbd8dd62ebd79ca0. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/MX5061800290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603613c5755dd1559037e1f3e8e80001c1fc4067995d6061bb5af2f50c18b80b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:41:11Z), 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/MX5061800291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f29de17f6924d1acbe5e174b249f0ce9c38fc67822f5bc579ae8421447ab38. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:01Z), 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/MX5061800293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47063556351d0f3a5eee86e2c19984afe728573d08aa310cb92d5617ab91f89. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/MX5061800295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d8467390a2f1ffdfa959a14960569594cf829d7190f62483ea6920d73e0cb0. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/MX5061800296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a6449f65e8a7880384faad4c3d7c552fc48e0a2749a285bf83b0c7c59b2322. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/MX5062001941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21257b30045c00e8b0eae84933d148f0215568cf3cd06bbf92dff1492d4a08a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/MX5062001942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae51ac05b21b7d350e49746bdba59892d93f1bcfa9a07476ad3727c4e855e2f. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/MX5062001943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf29b3d559d5420c31269edee70e375c66011355874c4b408d7da61f647afc9c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/MX5062001944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c329b3b904ccd232ea130fde75d716ff1df39881d3017165a7d8ffc90cef66. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:57:28Z), 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/MX5062001946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f78541a7b699f7ab9f3bb2f75b00cdf9a6cf9d9f74ae99b09937ea7c2cf9f4. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/MX5062001947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa624d9b381fa01f863010a44c48962680c2efeba43aa1fbfc0e6c7c2430e7611. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/MX5062001949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f236e52181c32f412eee602193c6d9cf6855d4d412bbfb80d1982558f09e50. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/MX5062001950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1325bb1c32bfa56234ff55d0b5b54dad3eedf559c0e7dbdb621b7748f1c68a2e. 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/MX5062001965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc424fbf58d515dc90f667bfe8c742337b9557a6c830c17812c163521838061f9. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/MX5062001966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9292e5557caf7a266678a1ad559ac02f5c0163602ccee7c4ec87fca95e5a5796. 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/MX5062001967.