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 0x6949c08f686c6646293cdf9b6eeb1e15d3bba671ca577fa43847055711e33483. 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/5264c799-db49-4c8e-ad56-1d75cf8e1ab0.json and https://artists.proofprofile.net/proofs/artist/5264c799-db49-4c8e-ad56-1d75cf8e1ab0.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 0xea67e91127d948c9d6f136ebde329dade90567fe36e1e85a17d6d0403ffdb860. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0M2330654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d544bb187882de0dda639dab65d3474202469e0373dcc163f0866aaa909edb. 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/DGA0M2330656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2db91caab7eaf7b5a28979a1694ac2e07bec3948816b2ffa5e8ebbfcc1b7502. 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/DGA0M2330657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49feb223da71cb92fea5113d03acd4d6107542297c9805fdd9aa4d638bda33b7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DGA0M2330658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603a94db2387554384fae0ce2293c601efc6ac8ae9e6f04f69735009c7f900b9. 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/DGA0M2330661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a309e73cace3c862117937cccfbf52f5ee11b306edb15a684c04e3206ac1afd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0M2330662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfe4508733085181804ec589f8c73bc447a104bfc8a89771c91c1fa3aa61e59. 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/DGA092358391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5311dd9f671e3f0e7797727c16900a4733b7f0d5ddd0b6e4e37b41e3f0414913. 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/DGA092317044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb26dcee813504baf2c208bfb6b4ae49ba792d0faf1aff0485b798a26f3ebccd. 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/USANG2295914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ce8422ec6dba5406401e975c16f959d14b6b476e66bca13089157f005d2dca. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NL4WT2400282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92fa430640b38023c7e204e33b9d8eeaaeca9feb9fa27f530478e8557cf1aae. 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/DGA072475051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c649232c2355a31d71dce9abf1594e760366cd994264daeca00036b1ed7203. 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/DGA072475055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a309e73cace3c862117937cccfbf52f5ee11b306edb15a684c04e3206ac1afd. 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/DGA0M2330662.
Outsider / Lily Scent And Cigarette Smoke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99826359a1f69b316c32b7ad9c1a6c968f749465d7b65a6953faa13b93b30183. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEZC62362411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332a9c7e77447812b8546be2f69492ebbfb12de78153506646ac9c2e9cce7a09. 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/DEQ022370581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dccb2e1ce3285890cd95e232f029b8a134f4b19cd94d2e567309bc574a16584. 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/DGA072475057.