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 0xed88d4c541c23bf71b85142d60f149b50187d7455a27dbc324a5b7b0c4a4443f. 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/9b06ad72-7608-4c1d-838c-aa89bf395da9.json and https://artists.proofprofile.net/proofs/artist/9b06ad72-7608-4c1d-838c-aa89bf395da9.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 0x00bf483ba28bf6ccafa89d554ee4c4edb66cac3b01f92f8890a7c9527d7cd1f5. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:56:16Z), 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/TR4870700170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad29d7e4cee8a16d28458a97426903d989ec93ef0550c6fb707c956973f368cb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TR4872100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60656d1ac3b6c08ecd77155ed751b591349b91664f77f13765183aec3ab7948. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TR4872100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb13b2e28616994c10aeb4dde9fb996e7b540abc2a6e21f4f9aace13c93dc524. 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/TR4870700210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d45cf0227bbba04ec449de5cb07a536e9fe249e141eadc1985584f5dd77e75. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:32:11Z), 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/TR4870700211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0cc8db366b6b4d019db7cd3081e7d357a531b3ce21e7a39436b7700e78890f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:53:18Z), 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/TR4870700215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4100035ab39a72e4ee4fcde77247b8b4ed40a1b432f71aa7e4ba768883d754b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TR4870700172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90efd78df04aa898f2ac571a1c466f1bb2ffce94f51d111c9b5c87cb19178111. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/TR4870700539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1027bb771a35fff68748ea0b3b6223b5349b4e6aac4f1623267aa600fbb32c51. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TR4870700540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0441a50678509a4c002749ca9f3938b5a5aa7b2b139ef67a744dc549cd4bd6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:50:19Z), 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/TR4870700541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c2aec4b3e3b18f33553138d6237f19d187f0269da6da5ddaa46c7f48a5440d. 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/TR4870700545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257978552238ab2c2a4748926eeb07eb89883a453c3556662fb6726665a9397c. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/TR4870700547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071eb9c2ec7ba9a2fa8f27c66a6160778620b91a679058ea3c93912cd381c9d0. 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/TR4870700548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a648f582ff5f8c3e1a91021f1c5568eaff25f4c7aabb3d0dbc2c02e60821c4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TR4870700555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70133e7e926b8ee595fc5a75e4573909540ffb73dd79654ac4d99735044434f4. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TR4870700563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dab462808902bb82da2b90edaa5e81bf0148315efd4d103c0dda1fec67cef5c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TR0240601601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50082940a03f1c276594fb7229a3fbc80491ed19c089436012e540adc4ac8f4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:21:04Z), 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/TR0240601606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519eef4e3ddd4bc123cb3e1ccfa56c902ed80bd0d00e7bc30778d65eaab903ac. 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/TR0240601607.