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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8590cebb57c9a0e9d7d2c5d36dfaa3358e3cc42832daf7bf9c986aa76962cb. 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/95fa1c8f-fb11-4461-a1cd-12048741d52f.json and https://artists.proofprofile.net/proofs/artist/95fa1c8f-fb11-4461-a1cd-12048741d52f.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1173580785ab6bebf4f8f6ca85c10a7b25bc1e26c40db1a8c9e31f709915e3bd. 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/NL5WB2300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6545a4e40d7340e11493a3b31c05a40800c3d4bf04e2c6b7232a040211a889c. 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/NL5WB2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0918aed7d2a1f6a6d206bc57e4f70e698d5117ceff3b19b69d85f97f85a7a2. 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/GX8KD2361538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110aef8a23f184f55ae68022b4e15ecc901a3397b16acdef58b81942332d4293. 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/QZMEP2222803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46d321d0dd5ce7ef0502d56e384914ed6fd4a0186741c1fa92d96c84fb2d312. 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/GBKQU2128018.
Ego in Amsterdam 2020 - Virtualized (Selected by Djs from Mars)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa47d75d3c68d32520ae759e296bdb2fbc7d7f3a4bbf4fdd9f884c6826882b39. 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/DK4YA2400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5a2899ef5e90980c35503673714b8177a0a67f0b5cee6dc645b337b759f8be. 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/DGA0P2320753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6151db1cab2ed3dbe55d290b81bb03451123e25851e3103108b98760c90ba7f6. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:33:27Z), 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/NL5WB2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369537cd320852994d48bdacec8260a90d9d608224af3b65adb63a3d2b8245d7. 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/QZFZ72331771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6c5e25b5fc3628f73526159b5b562ecc9faaeddf2c39eb3d0f784c81fed1e4. 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/QZFYX2318732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc145dd9bc8c3bca925c9e5bce8096ad594ea64a3a7ae48662e780d1781ba0947. 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/QZPLS2298095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae2526154dc6bfe26868ef14963d5ae9377b9c1a9eba7fb1adc269fb5233b87. 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/QZHN42246657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08caa9d9fc5919fbe38218072c880f1c40c2d8ebe2d90d7870229d76c51a29e. 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/USA2P2109786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c57d07c4bb3bf508f9122029b9c20f1478cb71a653177f5bec56ed7cada5f27. 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/GBKQU2187792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1687a0cc64e0cb3f1a7d0d2845a7d0dc95bd2a92d66b4576a218af4a958b92. 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/GBKQU2064234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8d987f46db31084de1138dff1606feb01c49a1c90e63334d6c400b13b9464d. 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/GBKQU2164729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e61d3c8e65b6a00596cee137a3232653cbea070b3ebd8a89368484190ec3ea. 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/GBKQU2141769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb656a6ef4c143c2f991c74919996e9cb3b6b4276370999e75ac6e9b470401e17. 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/GBLV62011300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50cfc74e06520836145ed0f1b4b8e84edd1516fe72dc0913f774f2afa2e4633. 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/GBKQU1965880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0267cccbd824e849f772dca5d9116521c5da774ff3af50979fbcc14f617099a2. 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/GBLV62037891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f491686f0c234f751fa054e321c86fafce6c46a9ffde69d8f33d7d2c80f02c. 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/GBKQU2014067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292845c8b9ce0dba4bd5715e7a38388ea477840c68625de3628d4ce26781ef79. 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/TRBIH2100006.
Nothing But... The Sound of Future House, Vol. 04