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 0x64eb64c6b20bc343e8a8901288d773eb97208c6d6a59b5f28d9752d4fb360932. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8b6d668-2515-4c64-bbcf-a20cfb52f5d7.json and https://artists.proofprofile.net/proofs/artist/f8b6d668-2515-4c64-bbcf-a20cfb52f5d7.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 0x6ec7f05b8085e139ac4c034858bcaee10b0ffc96efb9d75bd099bb87beada3c9. 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/QZES72549337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e350bc8e0bdfae7cd0d649629710a904961b35061be40c2f63bb3232624257d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZES72549343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b77af84dec8abd4810f8f634fcb8228eca6ac137e05b678fbade01156a4679c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES72549341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e953ca55d2d419cd5c10ba328254f34ff3c9fcb1c08f5ae661daf34d89d4bd1. 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/QZES92501806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe591fcf07d6af16ec042703373a53433b46b992fe4e2d9e1b6fed20fba93d796. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZES82599485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c65239b59877e6ce45bba0e9dc4a3ec0cbd96e4e36b0bf82bcd1af26a1edff5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:00:49Z), 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/QZES92501809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417a5fea6177c6dc2c2e84c649e2c1ca4d6f66fbc6bb498601c6cef4b3849fe2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:01:54Z), 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/QZHN52531084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdb0b540fa5681cfc466d8f5d6eebb1dd9069823549ce020e96c83c2650b6c3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN52529422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523fe116bff926ffccd6a0d30a685b97930735e1c96b578f9761c9d61ada8d9a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHN52527564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd8ba3c29fcf23bd1921e367461753d4c47a893da1bf1f665e06a41544bfbf3. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZHN52529421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0de05015b350e63190a1c3c29d5d6caed5b33d4415c9383eabae9cdaf0a4bb. 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/QZHN62527887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c93a4e85a5fc12afbc94e8ef17de1033b107508b9805dc8b5f4e69cdfe3362. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN62527841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311d26d71f75cae0837edab7847a993b6de0baaefeae9f834dcd8821ddd0ddae. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:41:59Z), 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/QZHN52529420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366fd030ba7dc7cd02075ad6566e2f5619ac112278e1ebe085578a6433237121. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZHN62525725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043a875a98c706f8836142d0cc8a609db5cf8b663d624be29686031596a748b1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN72507047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15400ccfa5553a23f7f48f5263ca7ff884ce0637dd69adf1354c4b66f626f3cc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:40:06Z), 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/QZHN62527849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2257410a687b5774d285aecae3df19d8ebbe7b496b25de2ce465e8a1365e67f7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZHN62527881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17f45c069730f46955c45055018120b720d6e595e5e520aa07d5243d0a8519d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZHN72507051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e853a689c0a8f61a1a1f061731e61bc3ebf370ea9c23ad248a368660243221. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:51:49Z), 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/QZHN72507053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4ee00fb9a41b09b4f7254ab8e993f969e02417fd80d4ee4e263d91234977f0. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZHN72507052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ba52ce0c660255fba4980ba80449d3cceacc66cd22767bac32e8c24e609a5f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:25:05Z), 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/QZHN72533683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6935ee9876a56491c0bcf8556fac7adfd32b5e4164eed92b414acb6c476a2b74. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN72507042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4e660897e167a232a73037c686db82d4cedd70bec2054e18cafdc8025137b0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHN72532575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01db0a5819142a07a8758ba1a25d13c9afec0a9a07e436b7bdba42517baa612b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:56:20Z), 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/QZHN72533686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d30b9bca5158a0795d7ce5083cbb4148c63be85dbdbf09c4e04802f663296eb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZHN72593906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ffa7deaf46102eca0dfa24338c1039a083293e0e24a142b1e0506cdcdddcb6. 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/QZHN72533685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02782147bb955223ec145e831a171a06cb1ab1e3169a2bd82e75a53a0ffa37d1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:22Z), 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/QZHN72533684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4988b3a5ba007e4ac9d3eff550d19a1d6e5b2aaccc2a7c5796843f6127ad8616. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHN72533688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363a2b315b7d74817954962bf3fea0c93166001810156dc243de5a6f1866a107. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN72595298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c51794531b355dfdf92395b59214bee38de5d0fea71ddcfef5c1e6656c52ca. 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/QZHN72595299.