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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 0xb10693deb7b7cf07d62e9a826f2c8483fa8ae3bf4fd8dd3caa530551ed8cc17f. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/666c0308-7031-4c2e-bc45-17dd54a62315.json and https://artists.proofprofile.net/proofs/artist/666c0308-7031-4c2e-bc45-17dd54a62315.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 0xdec61af06dbb14d285011794480f505c3f4e83db371b0d8d819b141978122dc9. 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/DKAZ70842104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c20180f1fcd3679d00667aee7c215b5564ccfd9a33ad0dca1a25bf09e6c22a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEP960800078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b7306241bfb95a0f7c9b48ac05641f24f91fa4c07209a49ad947e872aab24f. 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/DEAE60800703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd055fa54f6788acaf3a734e771ab5bea106d2e523ad6b33882d4bb9b00333c2e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBHFW0900118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c797d6e2e99163c932a54ac739e679dafe8c5c6f3e7f78036d305cf0013d463. 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/NLE710520841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201aba0ab94a0832fb97800444cc11d3da7fe8f30bc5b529f86146bb7c4bacc5. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEAA20900934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f59c3c04b4029678956bae1085bbf81458a7bbbba3e127f188d1a05a33aa535. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBHFW0900125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f21125887f9af16c4ab84b46b331aa08be509450a5be3e7a1794293f3085351. 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/AUFO30800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2fc685cfecaa1948df57bbb73d421e4528c9baa520014a5aba0779a90ff50b. 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/DEAA20900977.
Closed Eyes (Paul Kalkbrenner Remix) - Ned Shepard Nubreed Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ee66ac6ea333c3e537abb0b40513b5d15dd490fcd8e5362e0eb5d336a87a98. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBHFW0900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf92042d9d0a4156a7208693911af675483eafd4fee5134f71e0eb5afbcc87b1. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBHFW0900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a27a063ad21d2468eb9168e7eaa27e884444d0c05a8e81c3d2b24425a6ce093. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBHFW0900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76668582609df193260a0d3125daccafca798e3cbd9d8141aa5f3cdf6a7c207. 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/GBHFW0900134.
Army (Dean Cohen & Bass King & X-Vertigo Remixes)