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 0x9af7f17bd489424e926e825aa568a6b996f088ed53912bc19e37ff0cc04fb572. 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/3581b1d9-ae37-4262-a081-ae249c2f1f46.json and https://artists.proofprofile.net/proofs/artist/3581b1d9-ae37-4262-a081-ae249c2f1f46.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 0xc75e63c7432c720eac948b406e547f25b71d7b73ea00f409c763efbda5e6537f. 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/QMEU31913320.
Boomarang (feat. Lil Berete, Acerrr, JoEazy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62527293f0b247cbec06137bb717fa7efe43b35e7d1a60045ed1c6032da3c8f4. 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/QMEU31906747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2415797876bcf270bf781860b1c020de44cb81c0a2b5ac760d6643a971b68c. 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/QMEU31913322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f3d9bbb154a425bfa9d34e3305b57b6e35d13e47ebcd4c0a354123c1af3a49. 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/QMEU31913321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3311fd08310b5971f60c88a378f28c1dd75b4b58ec4513f1811d8a9341936c4. 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/QMEU31913323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36365ee5dc56ceaec6558fd5a9aff1406afc2571d1a39f4542bbea82347a5390. 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/QMEU31911854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000c25a365af2276515e075dc8bbac290688c0b6715248e908397f080bbc8b60. 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/QMEU31913324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab343c229eda89307a5b3ab0dedb6fa9422f1f836a723b143094acfa3be8d6fc. 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/QZMEV2433102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6132ec8298c543215d38b8b67b1c9b95587641f51f2c3762871b4a4c50dd00a7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMEV2439501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f6d3e2237a23cdf6f28604d81ba78d57dc30a1bbe08663289740a469004c2f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMEV2433099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7651c87c0ee2090fde899439f5c859a651ac6037627a975acd5d18319fbaf81b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:06:25Z), 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/QZLL92416920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f21c1563ac958beca428075527b5189108324de39727d5ee5cdbbfa4d09b34. 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/DGA062301202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e4da1287de2a35d8b16a63296af621e8e4869114b6fb35233ffa72ea0d77f8. 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/FRX452268993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd87b79d70560d5d54296987db206d1c51556a530ce2e72b8a93da189e31d276. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X42275325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2de5c8d0ccca4c5447d63f1f8183dd359d432ea754691ef7154e9be528f64d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S2138869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987bed932bcb52f79110933aae438c6f3de7a46ede210f04821a653c6af58ccc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6Q2014441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36365ee5dc56ceaec6558fd5a9aff1406afc2571d1a39f4542bbea82347a5390. 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/QMEU31911854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62527293f0b247cbec06137bb717fa7efe43b35e7d1a60045ed1c6032da3c8f4. 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/QMEU31906747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fb4d0b00add854f059388501757dacfdd8ca4d2b3d31f10e095015b7e45f76. 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/QZES61918958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8328bcd44174050c456532f7dfb0ed0a0a741291eb5b9c1cc04e56006e1b0db3. 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/QZES51935976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedab1972d54c07ffb3a144bdf04b72baa6b0c681f81275e2722915d5715370de. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADN1837671.