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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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8c408fe69dbc7e4769da74e332ce4d6ef49e346d3d646b058051db5cf9b144. 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/bd68daea-fa2e-4d9c-b449-e2f8093b5b93.json and https://artists.proofprofile.net/proofs/artist/bd68daea-fa2e-4d9c-b449-e2f8093b5b93.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 0x479e1554dd7c2fce6cb2449c100a490cc46899aa9b7d43d63260054eccfceec1. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/USA371336167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad29f87dbac47bee4f547edd80adc74c300e96eabfd26654ef6b6b9634a639e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/KRA341630436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4b64bc56f63538ce7936fb58f55acc48fc199d78478effefd49c9038e38a00. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/KRB471700588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ac9fc250a8269a7c17eb50b7e2ca46b3f3b07df38c15ebe911eb5add54c9fd. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:02:29Z), 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/ZZA0P2312506.
Dog Knows Everything (Original Television Soundtrack), Pt.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09f337ef68b4a5f08e570a2f5fbc7e92f21dd9a5a94704d4c4fb3a873b93a92. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:09:19Z), 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/KRMIM2467363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621aabafc35796374d428a6eddbbf407110470285127247826582bb7a1e82571. 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/ZZA0P2517633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd421d44ae8d2d00b1832098394b09e0aeb8016e84ff62c1bba527948db3f1ce4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ZZA0P2517635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7c2b665a66142cb1b2237ec13626617f947df65a9f8a278c187d8e90d9f4c4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ZZA0P2517637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9633b16047acd4592c4bd5a46508d49ea0833bd2fe10f8c5a099170e35cbd1e7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/KRA382319928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3826685336e0d401e1176fec873000c036bbbca6e5555f7a6794add672ce2e2d. 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/KRB921940234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91799c332b30916e3f88eb2eda6c71ca0f1d919a25a33664c1e708ac3b2b5fe. 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/KRA491800608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d33cbc17d3e9bcdc96ed149f9ad3acfe8753b450d1d3ba8237687b3ba92b315. 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/KSB022500968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ee096cfa0b42d0910928c22278b4f99ce5d712c2328605196e9a050603839d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/KRB921940238.
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 0xa549afd77c1ac1a24543f23e38668a1e47d189f57f74737682d209d98c8326ce. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/KRA381500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaf982615d2f9b4eea9bf048b4a87b2769974aed17b4e704673bb2b34bae40c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/KRA382007205.