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 0x44a24325b6dcde0c4902e69d77fb682f222bae0e4b2f87c273ccadb1ed7ca601. 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/afd42b39-3bc8-4ca5-9996-70600d4ea808.json and https://artists.proofprofile.net/proofs/artist/afd42b39-3bc8-4ca5-9996-70600d4ea808.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 0xda1dd3d45f19fa1d7afe7aac9fbc9a80a70a30c2faaed15f7809a69ff26fa7b8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRPGV2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c2d327ca6539e996700d3a6c29459e79eadc999fe6e685a0e2d395d239ec42. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/FRPGV2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28778cf3c4fd4b31c6b7c900a0c0ae764676f55d8bac018d580894e219ff95e5. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FRIDO2110999.
Dreams (Fatnotronic & Emmo Remix) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3248b3f7d9bc7ac472cd6e8186d9444da1dae8e65a5addb6325220f902cb0d59. 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/FRIDO2110998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5933c8d67856f9f85dc8c590ff9f386994b2032c81ce863790057e20201ea43. 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/FRPHR1700171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0528e7e7bd8e0748ddfb1a54ad0cd340ddaaed360ad59083ea2347993c617322. 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/FRPHR1700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a61f5dce22ddbe559d1a69c176eaaea92af3d629dac98170ffeae5c214e1e4. 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/FRPHR1700191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907edd0fb5bd8ba71a38da7ca67ac1552a29acd0d3e27ffa403c759d04e0874a. 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/DEBE72100186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1936632e80b17ad204b397d1ac7f2f584eb2982ef6df6363402f198b99b9b9f. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FRPHR1900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b1404ddc248e4a3fe44ff958e0c33d0006566b5234e6a56fea2ae6b282bc46. 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/FRPHR1700180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdba576af160e5d6f94ee8163db7c9977d47b5f10344fbe0122c46956203bd29. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NLQ7C1900061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98b9b78a7c83ccccc9b51e00598227d90951feae5e423e8632e0dde89237808. 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/QMXZD1100176.
Banho De Espuma - Fatnotronic & Emmo Remix
Rita Lee & Roberto - Classix Remix Vol. III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd892b96ee4bba9e616cad08eec62629978a2cdaba289c528ae8a3588f47b94ae. 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/BRUM72100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9b820ef9ffb1ce069ad8c2dd9e71d3e32fe9093563b037e8aa022f3319dd70. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USCGJ1701550.