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 0x7c0ed138f708020701dcf503a7b98baa6909d4c94a1f4ada883016df1a2b6685. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09fa8cde-77ac-4494-9ea5-53e598af7984.json and https://artists.proofprofile.net/proofs/artist/09fa8cde-77ac-4494-9ea5-53e598af7984.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 0x605c0f95148e407f7e8bcb74a53cff5d169c5e82afa80b1b414adc9812979d35. 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/US83Z2200683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaace83002c733556e30a8593efe9f28beda9f7a1432e14310d4fb7bf909bbe75. 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/GBKQU2409829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb501e49ff74edc35a7a2bbab7477e2cbd0dce6e79fe6855a346f1cd2c5077b4f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2409830.
This Is Just a Dream - Hernan Cattaneo & Marcelo Vasami Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44025ba05f3374c263db48771038d7df208d3db97da65f931dd524bd7c3c0e93. 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/US83Z2340925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee52c34516d4133840ce86a6d46f69e52f67a542eecb7e51d63baa0ec41160cc. 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/US83Z2340927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27a47c61822f91fc77bb81e12e4059a0d5856b8a3624bc5415cf7ccc3106f24. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/US83Z2337156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0a0f5247e732ffdfc48be8f1b15ea17fc36631943c1fbfd79ddfa0b6be9991. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US83Z2326931.
Solsticio (Fabri Lopez & Juan Ibanez Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27f21a0720fa59f215da92e70952e96706891c5890549579333f332511caa8d. 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/US83Z2137763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc9233dd5b24942d982682617bc1341e99b35223526f1f88a9cd108c54cd1d9. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/US83Z2137764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a022ac5f91bad09e412fdf36798fb9a518889ecdb53123e753e26ca9ea9b4c. 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/US83Z2132291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1147a88f4df9eb2afd3fc0b574709eeb8fdc523a17827c6d594dd47751aad065. 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/GBKQU2103889.