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 0xe463c3ff93a643d4b3d8102805bec9816bb847f31918fa6b5c2ca20f17a8b32c. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90798721-88ff-49e2-8720-5d8fe2457f92.json and https://artists.proofprofile.net/proofs/artist/90798721-88ff-49e2-8720-5d8fe2457f92.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 0x6371f94eba9c0a6ae409e0d8333f8713a143dedc44aef318cda71dc202fce86a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK2217722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe1e0931f6489370eaa396d36e2589cfb3519aebed4d6e8488f7c0ee86b8ad9. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:16:00Z), 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/SEYOK2217723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd103340b1e93099103bc0134ccf3d96055aea3db07b62218fb92dc28a72515. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SEYOK2217724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2812b5560006f453ae9a820240c8c7fd35e97470be9fd70c965a45bbf64e35e5. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:23:45Z), 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/SEYOK2217725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce8591e53ee5eb581c33a7d82407ec52eb8752dc58300b55f6fa2cbe5b7d5ce. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/SEYOK2217726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df0f1b74cc40fa32cc85eacdd9b03dab614edc374b58d33c340d802ccb48589. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK2225778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4efd7bc83073f91b82a07c9cd03cfb5233e53e30d8ab5a215d2f367577109e6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:38:13Z), 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/SEYOK2225780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3234324d340f0cf70962e09171c0aab4fe37531ad1cf21ef164a842fde4d974a. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/SEYOK2225781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fe8d48e3beb910da0f39504f265c1babb788dd03c1cb89202441f280c43858. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SEYOK2225782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f107a26a21d88766e9def6ddd1e8fd88e7ed292e4742b946e1b65ca5a026a30. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/SEYOK2225783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d65cab756a911eafa42824e36260faedbd0c302a7471487ecada01037fb81d. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:59:41Z), 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/SEYOK2225784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e34983b561f7331de4e07db7b985466de2b1d80dfb953774c6ddcea933206a2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SEYOK2225785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b96ac930956bd77c6480e71a78c846dbb73a4c993a657fe65422e7dd90e2242. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/SEYOK2225786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eab867293fb90cf774f1189c824ac6cdf93fef1bc0f63907d4909c8d694a8ab. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2225787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf580bc62888e952bb02ec42376a3e85b9f4d666837f8973f41bb4c27ebc6579a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK2225768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc03d18977e97430154102db0cce161917bd6964a06c8768270d89e4cf66671. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2225769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9c5e9421e5a933ccbfd2946e6d35437c37a155dff626fdfabffd500f50a385. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2225770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9e814c7375ce478d89f039f86b7be5d01d6490f4f1264429a7de245316b349. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:43:44Z), 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/SEYOK2225771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7536c802e4a2023678857208dbf9eccd7705f71eac7af046a7e314ea534f411f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK2225772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe717c62e2c24106d418065a6192aae9787cbe84331fd468509d4277be9a7f6d8. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:10:07Z), 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/SEYOK2225774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d31db37068a7b67312c952e74ad70925cf24f498e93e7720223f99a920f4db. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK2225775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6864a93d2ef814489189edbed306885d137c13fa31ec3656b0d0c9c4a8b7df69. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:04:31Z), 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/SEYOK2225776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff99a991f33e0800b39834ef9dececd5bc5284048b81b0ab0076e49feac989fc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK2225777.