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 0x762100c50255ab577f421edb49c6d3baa2114ccff17000cbdbcaf4193f2b5fa2. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d688ac47-60f6-40da-8758-73e51c44435e.json and https://artists.proofprofile.net/proofs/artist/d688ac47-60f6-40da-8758-73e51c44435e.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 0x8a3335931603d394340caf52f50574f7fcb31b6a05d77f74cd04ab2e09bbd9e3. 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/GX5MH2100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b06339ee2c6aba668541d261bc034c0d1c34ef8c7b4c66ff7fb37ce49653774. 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/GBCE42101023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673ea3743ac17918ba3817a2b865b76077bd4397373b9db40c98f0f80fafe418. 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/GBCE42100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576e041c8eab5b0fc819cad0dc7dbbdff1ce3fc815d4bc27b2b1e8767eac7677. 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/GBCE42100053.
Instrumental Indie Folk: Music for Focus and Work (Indie Folk Central)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166adc740ab23f20cafec95064ad6ccab106ad799da554ef26e20ff90564741b. 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/TCAGA2277995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e98ed8b83745291ae24e359f63f9caf837b235f59ad765bb80edd05ed651b4e. 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/QZ7GS1700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa611577f51229928035dc581398981aa8d273e9e9bccb08203442dd5ad593af5. 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/QZHN52440449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d053d080dc59e64d6e5d3779c56021d8d76a6d80f84f49f6d96569f05a6f41a. 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/QZNJX2409032.
The Blessed and the Damned - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce8d40d011ff5119f8d051dd065df240f25e7a7350feb52e8291b74c144fe8f. 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/QZNJX2409033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8802a5c4a5f9264b73374779c9d78ccb94301f44d2510106db5c828356315c0f. 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/QZK6K2415872.
Along This Cornish Coastline - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9929ba8cf83125dd05efeb00f52ac0e682dc300348a88bbf70d17588652bd75. 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/UKKYE2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3335931603d394340caf52f50574f7fcb31b6a05d77f74cd04ab2e09bbd9e3. 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/GX5MH2100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa6746a6730b20029618b6eae67d84299c3e4115971a780476dd011575793c7. 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/AUMEV2400909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e7315026a3e543c0594d9f8f5b7936a861e10b70b7e0511f035c01b74854f2. 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/QZYJT2400394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba43c33469a236279544db586576ba31d87c3b4cd32015b1a52c53ce5978a991. 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/AUGMW1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d072362617ca1b5f92f67f1279a57010b4bc7f551e6880c8b9904fefb870065. 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/QZNWQ2333028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb77b385775d254f6a081e8549cc9ec3bf819c99ef1b65ece91f8501909e9473. 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/DEZC62357124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48605a3475aec62758fa08e3371a148d7fbf7f9ce9c1f096904992702545acb0. 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/QZTB62368139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5aa805928ff702eaf384fcf7b971628ec390d28d5b233a517537f7355b1e88c. 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/QZNJX2409034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa581749118d4d4c2f9fff78eb65b434d5a2b746cac39ed3528901cc8241094ae. 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/TCAGA2278146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad6a6fa2fff780ab8517f5b7cba7584ae20990c8eb24cf75fbbbd69ef2b4d02. 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/GBLFP2208611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea6741bf8e6977c239a20267e493e8c43703a9278446785adfda7a3ba0de069. 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/QZNJX2409035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b06339ee2c6aba668541d261bc034c0d1c34ef8c7b4c66ff7fb37ce49653774. 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/GBCE42101023.