thumb | right | DJDS at the Santa Teresa Festival in Québec in 2018 DJDS (formerly DJ Dodger Stadium) is an American production and DJ duo consisting of Jerome LOL (Jerome Potter) and Samo Sound Boy
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 0x29b232fbbf6753fbc39ea0b4de290104a8f5a90767afa7efe5f2b9e01a8566ef. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0e4f08d-8fae-4068-814f-0a96f19ca92d.json and https://artists.proofprofile.net/proofs/artist/c0e4f08d-8fae-4068-814f-0a96f19ca92d.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 0x457979424bfb70117aa86b08ca682b4eaf2d1c43b8a8ca1c9dfe492f91bc93aa. 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/USAT22000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313745ae46c14d4248d8ddd331a2411fd00b2bf5ff4094877d3feac65c1592ef. 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/USAT21906910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174f6d06fa28a67dc6a87da36e091f3df0ed8a8e9e93c5f737d442dbc20aee01. 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/USC4R1902743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d904e9386663b00aa2e07265fbae8d55dd72b524bec26299e92479e8d4ab0bf. 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/USUM71811070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f781a4b6d837a4a207e2e99c9124915b5e6a979fe9261d8e1e1433ec216d962. 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/USC4R1902762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab033bd6503cd0ef44e6165fcd4f520d4786eff09312dc3929cd57bd1c2d3717. 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/USUG11900187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302e4e0d0f65329139e5468ee7b121b15a8109ec0ba3611eca9c3ad8d268f6c8. 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/GBKPL1976840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa226d3d8a9a876b2b6a61e5e379966f27730bb17571a97ff573f592e0e0fb346. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USC4R2003311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe737b777eb437d2fb52763796c9b0905040c95ae9063bb1ca5b7c40d7ee7e5db. 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/USC4R1802348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de79e09bce658427a801b1f47053fff0b40472a5ec36238c93e337633d0413c. 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/USC4R1702309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c268a309dd6eb6978e140aa0a1b9fb2041ba6dd1f161207e87c49714eb86d09. 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/USC4R1702217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e342bf70a4d46cb9400cc9113208f108295c6ea48237c91011a876f239a3404. 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/USC4R1702161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c2cfa98e3b925025d9ae28611b85bf42c564a248e078965c854ccb32095baa. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USC4R1802349.
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