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 0xfba0fc6afa6d171762f3c1fd670eeb06c99eefbc6b34404c490d1c5966785b81. 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/dea5d59d-6106-48fd-8bea-477d2dd73808.json and https://artists.proofprofile.net/proofs/artist/dea5d59d-6106-48fd-8bea-477d2dd73808.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 0x12112e658df1b61b5750a0146937b949f47c449095136a27f84da5bb4bb047c3. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/QZDA41823337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a498c4c907a8d92f0a0bed7e96a1a09047890916038ef581122c0ac3d98dec2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA71803002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c464baa140561a502c2a753bd930dd33368462be9ac7b636b5cefa54503bc9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZES61832687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3678eb5c084b343e9476575fe232793e09bc73eebc9e848af3660b2ed47d85. 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/QZFZ21916417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868e7c82b8b1b91ff895c7d535e656a04c66f04f790b45de00018cf76bf71f16. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZHNB2011626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188377ea88dbb0567860eeb530aa7a73660fe07efc5eb8c95c55b848bc9777f1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWU2055951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5e8f1eae1ab3bc3f7d8a827b0b73e5745151ac3e21ccb00ebc7ea6b7245dd8. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:05:59Z), 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/QZFYW2150440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8954a5d07638cb57ccd0319e8963d307316e587dfbb88335fd898401b4ac3d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:11:37Z), 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/QZNWS2141792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314a640d1ce982af08332c1b89b6382623ad9f39407b5f5254027b6b04257f2e. 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/QZFZ32200816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca8637da58a1ba093a5c0cb42bc563c6bcf7e1b0cf26bbf30b14de2ad52da25. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZK6Q2229370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871ebac86e547ac9d8ac642ef29c08ab271742db7b02e25c1056dc5fc3baf0ea. 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/QZES62345597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78ef9eb4b83737ab8e11ecb6e1b6454ca2a6a534ea4eec35ee249b223255f0a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:33:17Z), 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/QZK6N2383428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871ebac86e547ac9d8ac642ef29c08ab271742db7b02e25c1056dc5fc3baf0ea. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZES62345597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78ef9eb4b83737ab8e11ecb6e1b6454ca2a6a534ea4eec35ee249b223255f0a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:58:12Z), 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/QZK6N2383428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8954a5d07638cb57ccd0319e8963d307316e587dfbb88335fd898401b4ac3d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNWS2141792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f1f77f027a52e87cb0ff76812bc438822764abf612b1d25037fdd80c62c656. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:02:24Z), 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/QZK6N2485324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5c23a3bf89ac447fade907deacf9d2f8ba67bcd35bc10e598d51c99217b44d. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:00:17Z), 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/QZK6N2485326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314a640d1ce982af08332c1b89b6382623ad9f39407b5f5254027b6b04257f2e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZFZ32200816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42777be9965816d428c23babfe848f29cea4741ac1954edd16a0d7f29279df6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6N2485325.