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 0x097130ff57a3ea17057d1e627feffaa12d3ea801a5fcf736a65e87c3eba2852d. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5009e832-111c-4e34-97ff-877bee72d999.json and https://artists.proofprofile.net/proofs/artist/5009e832-111c-4e34-97ff-877bee72d999.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 0x0e0e4a5533bdd65bc1b939731209d5106906290ff7c994d32cfa9b552714a112. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZWFW2470868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e52cbf33b9cfbe0755a7b5dd78ab02a76c676c062f76c71d1dd37630c4c9f6b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWFW2470871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c67cc4b0f6e9f1917102e4305f0bea057ad8d9f1c643f73d6b06f13292f8e2. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZWFW2470872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae59db8075901bc822dc25df1088d484e6ee40dfc19dac1b25cd7c547b6f6c21. 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/QZWFW2470873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d39bf71254e78282d22ee4024bc071111611d5ec69202692b8d0a5ebe2bbeb. 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/QZWFW2470879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7475c606d2481a85343e9c7f9301aeef69941028e27458aece0fe6a4eaa824e7. 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/QZWFW2470880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068c325b6b2d2ffdf618b50d17aed334e2a527655c47b98084a2fa9598feb5cc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFW2470881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe59b83d57e3525fce2e326f5529a604166c7fa7c1e80587dad1881c6656dd57. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZZ792432075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc770ac24f3289904ff4cc70e25b42e39e96302fb62f61dd2568ecf6e45918e. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZZ792432077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc07c68488dbe454fddc9c829a1da48cdf538ed138bac1b57bd27438934ad3cd. 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/QZZ792432080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993262e71bc3b35893b42e4d025665606fefd45e44496294f6ceba3f74fd1751. 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/QZZ792432081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac7cc6d03c814821c8856026a7871c5a84da382dadb72491fb2f4563d8f61d8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:05:07Z), 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/QZZ792432083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2287618dfae062c2b0b38f103a602cc4b6ccc059e18f6b62864c02c6b3cad65. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ792432084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d393117a4950f92f72e51e63bc6663b5b95cfc71bcd5ad3897d2485652b1d1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ792432087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd41283e29e56464994d00cd76051ac7ce75dd8c0814ff55e25088e880bfe139. 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/QZZ792432090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9951cc0d598cacd26e045b327396e79419b51c8afba7bdc9936c9d026e332864. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ792432095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1684449ab4153af4e01dd782cf64e82d65d531b0a20e3fe056596404a12ec740. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZZ792432097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc42c5c42faa425e019c5a2748bdf731974ab41c1e07e4e88da1a7bb53d0b456. 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/QZZ792432099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4070298ac3634cc96c5d2c8919c26af0d9aa6204ba0875bb401ba7a141cb2d5. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZZ792432100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096a61945bea5a0d6e24564cae04c35701cff0d221b0e226f7b25e1da4488bf8. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZZ792432101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76434915cf842fd97b58081a383e2f728eba60857d605c0e807d64c1976788f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:16:18Z), 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/QZZ792432103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838639a84b79a26368d0cf5a335258b83e1279db3bb04007493dbeb42e45609c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ792432104.