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 0xaff60af9a604a64af08ad13a7067e38c5b5ca602ae8990fb0f690d89c3cd10e2. 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/ce6d30c6-40e7-4b8f-8796-85325ac61790.json and https://artists.proofprofile.net/proofs/artist/ce6d30c6-40e7-4b8f-8796-85325ac61790.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 0x766a7b6dbf237306686151a120c1b3a2cdf88789f45469d8440a4f0480004451. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:54:27Z), 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/QZK6Q2248512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cce28e4413f2d7087a286647c6e27791afe9231228de8bfccbeff8eaa8c1b4. 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/QZK6H2228729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84529da46e68c64e0c44959f792520919ccca348fc4962c9bc3773a806b399e8. 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/QZMEQ2295587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624dceeb9e73bf4e8756a15863587bef9679de60c38cabadc299abf3b2f82b9a. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZNWZ2299066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6423e6627dccb5668b48f4223d2e7bd26fd78740cc6a28f16e09ab61976f86. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTAU2271493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eaecff4fc6c8c14e984486856d57212893fa085677fe97361d0727281187640. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTB52298417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36eb6ab4f2c8832feb4e8f5c9377b7cbdc8328371cfc583f2b060eb387fc6ef9. 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/FR9W12321492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e79d81fc7224a4bccf446484e432e10a4bfef8c6619e3390ffd1720237cdad0. 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/FR9W12321493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c09fd737892a8abb54b852beb5df80c96f72413da8550d5f799576d9ca5d5f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR9W12321494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745ec4073356043d59eff9f4b1fa63bb981001ff22d5eb4977c41c096114638b. 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/FR9W12321496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec960a58f32c0e49d2d10e40dfb8871c84666dc25deb6b03f0ff43e3f3daa09. 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/FR9W12321497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8007013f7906bb8bf07d29dda466d245a9cc7e5110ad47d44fd004be59270ebf. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FR9W12321491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f9e2ff639abfe1ccac9909234db1a918113b689cbe52df0979252b321d02cd. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/FREAZ2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b229787ca037f86e46e73c07a36aaf9c99dedeb84c33903d730b04ff3d3996. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR9W12321495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745ec4073356043d59eff9f4b1fa63bb981001ff22d5eb4977c41c096114638b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W12321496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c66cf6449331ea646660cc2d3c12144ba88172872ee8cdc3309196f8117cd2. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T03:01:39Z), 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/FR9W12331706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace1bc47fba4f1a8263a8162d490fedaa0aeffd170bedbafcb17939c21b565a0. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:34:42Z), 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/FR9W12343100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732e0d6199beec964caba89daf923dad31637cfa0fa2249d67eb81e4c5a81414. 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/FR9W12343557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6086dba5b1c59dbc9640e5a16a44b8e82d3f496238236abe47e7308718b345d. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/FR9W12408040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde19f068e835326aa9ff3ec46e37c0326272c312b0d53d2546b77b1ef7e57cd5. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FR9W12431412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6486b978aeca807980fd704635dd7867b6549f2f46d6d305c63d7aeeceeed1f4. 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/FR9W12436542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21aa632fb023986d1bd30289effd05ec4d940f364b8cdce28365f5adb029d9f1. 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/FR9W12364027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21aa632fb023986d1bd30289effd05ec4d940f364b8cdce28365f5adb029d9f1. 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/FR9W12364027.