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 0x8b41ef03cc8d6d36f17621e5b3fc585b65bbe4058bf0cd66bb6d6109282cb9e3. 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/fbd6317f-d9da-44f6-8696-4f0fb06c7265.json and https://artists.proofprofile.net/proofs/artist/fbd6317f-d9da-44f6-8696-4f0fb06c7265.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 0xc60043e55759a1298e722de5f5e57d194bc0e82dc96cc75d0e35c8818573bf2d. 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/QZFZ41900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97cd26ec7055630c44fdf0dc80eca0fb688fa27497b79caaff19a9cd34e1f9c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX282164483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5aaa46da88e930ddb6727857628cfbbcfd490c49b8540303e514f644418b7da. 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/FR10S2297238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe01541580aaaecf46501e7c74d7d3d73ba22492dc5aa082a4bdb09adba3f62. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR10S2297241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85156ece02689229e7ace162a2a1e063be4e9ed25a25b87a7802f8c135e710f8. 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/DGA062239928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85156ece02689229e7ace162a2a1e063be4e9ed25a25b87a7802f8c135e710f8. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:54:20Z), 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/DGA062239928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636bea766da3d3fe585e14ad5b8a68a131802d72e2d0b5f31d264c7b8dbb5e43. 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/DGA062341045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8e105fc12402bd6e23217aa1415d2f813852908760894cb97cd7926ac6d63d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:32:28Z), 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/DGA062341044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636bea766da3d3fe585e14ad5b8a68a131802d72e2d0b5f31d264c7b8dbb5e43. 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/DGA062341045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfa88f452f2b3772032b57d2810806e3aefec7b677669f7a3057238601c9bd9. 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/DGA0L2352440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbea7925e846539291f57633f99b324c3f219ae894eb12049dec536daf63d327. 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/DGA0L2352441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ae71f9d5abc86866aaf18b926cb358cea6a2c6f2fd228ef3adce29159bfb62. 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/DGA0L2352443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efb8133a88fd3c428ac9a1217cc1ae3e6e4e6c8a9a507c42a21314891503b5a. 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/DGA0L2352444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94df50e7f7918f35b162c3b8c951c6e146d488c6e07b1768b67c2b7cfce6dd9. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/DGA0L2352445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a54c57c2687280224353ea1dc9d2d58b8af8264364daf38897f23da1b93b533. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:31:41Z), 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/DGA0L2352447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eb824f195f66149ef9ee61e266832bcfbe28b45d12ffd1bcbae547cfc0e698. 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/DGA0L2352448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d9454b19c7e3ec18b9ee06c948fdf6e37916cdede004424a0efc8e166dbf76. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DGA0L2352442.