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 0xe714b9e3364796af073759c73da8e2ba421ba6db399d44a0e4c5445d85bbe922. 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/466a0fc7-9699-40a8-a1b4-1b5e9c9e933d.json and https://artists.proofprofile.net/proofs/artist/466a0fc7-9699-40a8-a1b4-1b5e9c9e933d.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 0x803f7fda977f0294ce1aefdbc2293e4b7505ee8c435e9e85142b2109efe71aaf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRP621600230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d31824ee20950aaefcdc72f65410f65ab1a76afea2e2affe28058e63fccde76. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRP621600200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d25c9fdae06e54b4853b7a42f761c7d4028927bada4c2e47cf6184ea408070. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRP621600220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803f7fda977f0294ce1aefdbc2293e4b7505ee8c435e9e85142b2109efe71aaf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRP621600230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac44091ad8310249e3efe5653fb62f2ba5a18bcb5aee303253c8369fae53ba9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRP621600240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7974a26fa4758b3cfb6c7ee1f43cf79fab63a0886b10647f7a3f61bf92b0194. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRP621600270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81255038b0dffa19384f0703ba940c23dd2e8a40c7ff385ec8ca96cb0093762f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRP621600210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc628b7f839dd1c292411142df54e84908cda3c481bfb26a913162a50e6daf72e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRP621600260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b99cd3ea86511fb9b2e36f8bdffad021fb1e58966ffd2eb4b2c18e025be9a84. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRP621600280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e6bc34254cde9da972147dec6841c74079d1c230abd5eb992926f5d6205aaa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRP621600290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e29ec1931818123b487339fb13d05bac65f22e9ae3c7b3820bbd1dfd820079. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRP621600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5595cfdff253c554d1e2dfc9cbeff6c5537241270fd8f2500b3debf66ca8f6d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRU451400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b33c7ec6101e73df185b0bafcdeeb9e9144d9184488d8dabecc697981cf2fb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRU451400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189bca4a165ee4f7190f98851e043849c4583d17c8c4db964a0b4eacfdc58858. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRU451400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93634d3eeeb98e7394a512fa103ed775faa6564e138a5cefcbae803a4db1ba4e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRU451400223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9979d5a27656372c057862c2fcf50282e04bab7bb56d7fca3432801c11378e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRU451400224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748e27fd0c140959f1f9c0cd0d8a16cd8571b5c4a9b71a9713ca720995be51c9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRU451400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916d35e45993f76469809849a7b5ec981db0a0a1dba1d632aa3eb8697428ce42. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRU451400226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c4d23fab3339212de198bdc0c7945cea0661f0ac62aeab1d53ae8db631d0a3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRU451400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b12300f82a6a18f80aef3cff0fa25281278832fd77c31af88fd39085c39dfda. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRU451400399.