1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa457f23cd87d6b54271e7873d4660c58fdd5ea81daa49326a7b0647902c58664. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a59f2d66-f7cd-4595-852a-7c7e4d8da9f7.json and https://artists.proofprofile.net/proofs/artist/a59f2d66-f7cd-4595-852a-7c7e4d8da9f7.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 → block OTSBitcoinBlock must exist at that height 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 0xd73031fb5f3194cbc3df4463535c201c947a2cad17d8f90e2d125b92686e3ae2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL4DU2000232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f049ceafb9b9622eb8bf88d65cbec32759afeda185490b39eed6a443b345a2e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NL4DU2000233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8ec18cfa8dee4102ce257d84d2ef0b0c03bc29f84f2b444e516bd55c3c4505. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL4DU2000234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50f7bdd1d546687a4160f6cdd71ff541be5eb601a7a95558064c3682adc309c. 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/QZHNC2567544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240dc845745385cbafb819731c71d9c6508df8a40bd419619b31e66450cfbd6c. 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/QZHNC2567546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92a021189065fc23f93bc6994749e47c0b5c71a298fd85c5ea31ac01fdc9a56. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZHNC2567548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ec78f3e098e5eb8891f511d8a4b2b3ac3ca0b2bfdc3b89f0a788a46edd0957. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZWFE2582880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c1c10ac358f619b6b6aecc8da6e1cfa1116a8b4c37b961336e1890504c964f. 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/QZWFE2582881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b822f410dd915e1eb31f37bbc63d974f38000d19538eff881415a7e7fcff65a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6L2253159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796c771cf064f4596cc40ce84c2f1904958e9d304bb255208f580240bb44b0d3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL4DU2000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0b9f0fc3a2a9d0d14aca8ded3d3e4b98958044842114155c3fa1246dbe98d1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NL4DU2000163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9100453d42dec46974918f2e917035e1769b2165bd863b1c810c9adcb6ffbe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL4DU2000472.
SLENTER CITY VOL 1: GEEN VRETEN IS GEEN VREDE (HOSTED BY MOCABZ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a29e7333e97f4cdc45f4b50ca6b7b9378201e9a6448c743f5a45b1b2324220. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL4DU2000303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b7d4b410d3cd4a1265a3d1cd0769c2a076ae653322a9dfc142c474650adf83. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/NL4DU2000458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7a6887f793817419ba3c6e12b39812ddd1797a118e96ed8950c3ae62024d92. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NL4DU2000362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe714664b9207abeeb073c1902e82d29a756259b9a93bd3448fd806866ae2f30d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL4DU2000511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f31cd76b5b0323a48d4e952bf0f82ddf177a16f28f75773b23cc4857a4bf9c5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NL4DU2000515.