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 0x11617f00377006b832199e04db591f02b2f1b7f10dea3bbaee0718a2622149cc. 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/4caf4efe-d8e7-414c-acf7-c0edeb779a8e.json and https://artists.proofprofile.net/proofs/artist/4caf4efe-d8e7-414c-acf7-c0edeb779a8e.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 0xca8e5481e11103c4dae8735b3214b3458399c588590d8298b778d35b61975ea3. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:22:36Z), 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/JPS801600085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196c3b87f7b5083e960a8cf1733ab9e69abeb4ea85954a70cd48d765daeb9a09. 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/JPS801600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620b71a7ffa558d98b02a9a3aa2a7785ac7cf369502e5c5a1fa637f5da162257. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:19Z), 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/JPS801600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c95a363f0eaeda71a5748061c8e17aecd1794cb68b2d73be30498eb7039125. 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/TCJPI1963222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ba27b8dab562bd5a8815ebbcd05ccf662d294d0fafc0ab295218ac323fdccd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCJPJ1900679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1c111097ac945aab31590fa909036a9ca396a631d14361fae978b137ae47bd. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/JPS801850268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d2c555ff5b20277ce11a0ae3b0b3cec2622a9a8689bf3af6d4999545d6f2ed. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/JPS801850270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bef19a7e6c11d07ad7b64198c5ce42a36bcc4b72df131f26fe917c9f998cd19. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPS801850271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08f82de914ad5f3d1603f9dfe344217d4d4f32b68aaec494b9008b76b0cce00. 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/JPCO02026410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659760eb60787c925b9e2b6f896907fdf074f31519620dbb479e54857c4b851e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPCO02026400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501ae005a6eb2b3112794fc8db9c66b7c410485caf1a922200ffbdbf776e7264. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:28:12Z), 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/JPCO02120110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c0790f77c42a0d4cd420356e58b9695eec71ac1a09b166df332b3cfe5477ae. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPCO02120180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7bc24e42c3d832c1827997699512d7a2c74d30c5f6896f03073f8ff1d8a879. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/JPCO02120140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca3cacb2cd6c350bef4035f4a255a231811176db1b1ffa001bf221c4ad8a10b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPCO02120120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7a23e7d86f5e9fd668271ef05982557a66859321ba6362578bc2c1f7b325e9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPX602100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3be47f57799a702bccf5199496cbaba81973f18e78473e4a828df75312f550. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPCO02302480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915b4957482f8a3419af53f3c3341526867bc3d59698dfa8a13d247782000559. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPVI02502857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022b98f336740030d68884bcc9e760c899650f33233e103f7a6ef747d33976dc. 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/JPS801961628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4186c7b84147213be726e2776a97053fc819a72aa1c3a5ad8efae9b1138922f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPZ922112400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65658b11950b2d52ea818151668c5558f48a9f6cc866e580e402a011fd2fb7b6. 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/JPM591001145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b57773c8ae532415c73ce5271831f50f0d969d18f94ff776f16876dd6a8fd1d. 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/JPB602102439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e55291a3f7eeb36e32ffd43bee5013aae77de7e40776b354c66bd7e6858060. 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/JPS801958282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ba27b8dab562bd5a8815ebbcd05ccf662d294d0fafc0ab295218ac323fdccd. 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/TCJPJ1900679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c95a363f0eaeda71a5748061c8e17aecd1794cb68b2d73be30498eb7039125. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCJPI1963222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113597038e81f8ee8b1119a35cc5c44086e2db4e29dcbc572d4fb0f918968700. 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/TCJPK1908832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da14e5269d17b1a57cf799e54a22577bf9f73622e5f178de3279480adacdf79. 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/TCJPK1908835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69221263270a45a47b8610469e5ef2bee5a317f7e7e193440f430ad754524ad. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TCJPK1908837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad00f41ba0eab06b6e2a8a969b7ba733ad796b70c87571d943fa323b91dad77. 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/JPPC02110812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5396d99117da5dadaa5b5d98d04fc5fa0150c9c0b0bd8bd406827896682d3cab. 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/JPB602104437.
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 0xa801cd3834f08bc618db5e50365b6f88a101483fd5cdf933f2aeafafa985b05d. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCJPK1908820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66951b73a4728c8647d99b6e1a8c39c45aa26f0823c59b54471e4920d1dcd9ca. 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/TCJPK1908826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaeccd8e54ccc9be1ffc3257d6cf5dce6f945ff5ed12f41c62dd11602183c6cb. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCJPK1908836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390c63919204b776655bddf4db7dde63d89a920c831df84727ccd77962a9130d. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/TCJPK1908839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37aee43a8b1efb70e11e1fba9ef4c06bff81cd750b87a6f1bcd9274895e59df. 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/TCJPK1908840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5a0e6faa8d960ddcd1667206a6b6b9c6de978dd07f935dcd11803fb3646c2b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/JPM591001411.