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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 0x6270a36a6baed8efbb711b9cb920ff84f3c00e17d1321fb64f0b531a57b5bf4a. 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/d8eda57e-29b5-4f26-a38d-bd0c114d850c.json and https://artists.proofprofile.net/proofs/artist/d8eda57e-29b5-4f26-a38d-bd0c114d850c.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 0xac3e0ba6a848349981005704b0b641b4d4dbeb3df3ebfa6828515b4f4a313457. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEAR41223626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7a27f466530448e1b4bf0a1a8a39941a8c7639a808f828b566505f73e41f0d. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DEAR41245243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061792772c2bbdb4ab83476c3ec68623f472dda987c6a134fb679cd52d93d2b9. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/DEAR41611260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b86394f8558556b438f16580c9bd5f127d055e17116bce72e5447b6c7e50a8. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/NLFL71600079.
A Decade of Syndicate (Official Syndicate 2016 anthem) [Radio edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd9292716252be44aff0ac740e43fb63a7f01ec598ef56072cdb2770775a27d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEAR41932240.
Still Fvkked Up - 2019 Remix - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df03f290f75e67a1f62ee64676b38ef08a06398c3e21ecfcfb316ea837aaee7. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/DEAR41914431.
V!rus - Toxicator 2019 Radio Edit Anthem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eec1f788453d83b8f52e8188f7316a1d003ec9b24b9d82572521a90202ae160. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEAR41986127.
Masters Of Hardcore Chapter XL - Tournament Of Tyrants
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6237739f939ddcca9220a57126cc7c96907d014393570ea8d6ec07d989dacaf. 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/DEAR41718607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7444a0cdb0dee50a6861b0600b6da3046729696e4bb2580ab35ded82786d4366. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEAR41939815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad27c3810a89aa591c737372f01b6d1ee81ebfe84afa2b246d677d7c77670fb1. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/NLFL71900189.
Masters Of Hardcore presents Masters In The Mix Vol.1 (Mixed Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92760980b3bff4ba156d3a149fec97588129a730611c1433e41e77c73ec847e. 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/NLS241401830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fa9cdd83211231330bae053901d71f4bff2002a1ce110be0abaaa8830289a6. 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/DEAR41780602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b86394f8558556b438f16580c9bd5f127d055e17116bce72e5447b6c7e50a8. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NLFL71600079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061792772c2bbdb4ab83476c3ec68623f472dda987c6a134fb679cd52d93d2b9. 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/DEAR41611260.
A Decade Of Syndicate (Official Syndicate 2016 Anthem) - Radio Edit
Masters Of Hardcore Presents: Masters In The Mix Vol. III (Mixed by The Playah & Anime)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841820b230334defe927875c554beb889882925d509b4fe9d0a16c5555dc3429. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLFL71600181.
Dominator The Hardcore Festival (Riders Of Retaliation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df72c64a8480d30c5683499234f699817dccddda453b5c3ce151db5750560d9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEAR41522640.