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 0x267e42fdec1e5218c01049c6ccc35057455d9cba5cfc5d3396f658efd54352bf. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40c47b3d-512b-4daa-90d4-fefc74aa5044.json and https://artists.proofprofile.net/proofs/artist/40c47b3d-512b-4daa-90d4-fefc74aa5044.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 0x128fe6db9c9071c449f43ebff7b4a587fb8170f851276a9cc129f1917e3da192. 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/QZHNB2105518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b6c8636e6c65ceba4a5ec0ee89ce204cb041bccb92ae771de8e1a72921408a. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZHNB2105520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282a1784097fa5a05431880215cff7769c8b1a01bb5532adb855d76225715f0b. 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/QZK6N2077847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045306b611b573ad80375e58cbfbc1556246214495c0b205d7f94dcbd5ef8038. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES62176088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b97771b842b71379b4a60a6ef0add9079214e773b03b87379b94b9d39f85744. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHNB2105523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108659c55ca73b24d0b127f5e7e3efc5cf3bb7cd3af07b72f10a423ee16b6c5f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES62490444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cab957ea46ce6780cf02a0e5b084d510a277721e59872193a197e16a061435c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWR2413623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf76d70595d2eeb108c051ff5bfe1a57b401d9df3576069ed3b52bd1ef38c7b7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWR2413626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108659c55ca73b24d0b127f5e7e3efc5cf3bb7cd3af07b72f10a423ee16b6c5f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZES62490444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b19c6b3343fa861aa2ff20bb58a5040e496a9136c56ef90db1165e9756eb8f. 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/QZK6H2147886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045306b611b573ad80375e58cbfbc1556246214495c0b205d7f94dcbd5ef8038. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES62176088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647d476ec4a9bbdb0b841100784e4dab24323278d48755d5e8beb95af562b2c7. 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/QZFYX2187063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693db3f9a371674750d2a604db7288af2e4a0a2f49a8f6f2c2ef8e8e82f4664d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNWW2072247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282a1784097fa5a05431880215cff7769c8b1a01bb5532adb855d76225715f0b. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZK6N2077847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf272104db510abd9782c9dc955c02c3e11094fd4890ecf8e06ffd9cc9fb78518. 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/FR2X42122434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1b08c3aa05ab880d164744278cebe189b65f7dc00bf4f496e8ca2400e43259. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR2X42122435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a8130cafa3c6afd158110b0a598c8246b19aa23aad990e2ba090578494716d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR2X42122437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea09968c59bc0cb32bc5aa43879d47d6bb9e79a4c8c4bee59e480536ff5eb83. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR2X42122438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbf1ee367aae686c1bfc365d8917bae009eb764b04626ebed93b847bbcc3fd9. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/FR10S2128272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf4bce1dac94565bd51411b49e2f6d6b42515746d26ae2335d41d4c49edbde2. 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/FR2X42122441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebce78ea6173e496afa168116c699fc7c822f196fed17dd7e4567ed28ebe0880. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DGA072132898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8569cee14bed0d81fc134927f31fbbb97d35839aac76c2007b4b21180aeb74. 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/DGA072181969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebce78ea6173e496afa168116c699fc7c822f196fed17dd7e4567ed28ebe0880. 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/DGA072132898.