thumb|upright=1.1|Four traditional dice showing all six different sides. thumb|upright=1.1|Dice of different sizes being thrown in slow motion. A die (: dice, sometimes also used as ) is a small, thr
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 0x4e9f23da053d962a7466e367c77fb42b093ba450f87612d27e2d6ac359ea6889. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/793f61f1-c093-4458-a718-3be33c751ba5.json and https://artists.proofprofile.net/proofs/artist/793f61f1-c093-4458-a718-3be33c751ba5.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 0x90d1c33d5cfc5e7252301f543eaa8a90ca54d55731403500dc576266653ad10b. 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/SEYOK2162664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2ea41de1d88ea379cccbd3e1d7a4006121adb36ef6b02e529878fd4d4520dd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SEYOK2205804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aadc0671c1edd463d1e844414e39a25cff3e448c10bbdc2730aba29502775f5. 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/SEYOK2147375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0f5115993999f5d37796735a652682b2086de2f3170216cbe1eda893b14bf7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USA2P2255403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1693839dc2582f254e5c77df37396d002a2dca69c97145fca1c4e4b7f013c350. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:24:00Z), 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/USA2P2314254.
I Will Survive (triple j Like A Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a18996fa0226c199f6af008978bc700fbbd7fc66f1f98c9686675b7e2f739f. 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/USA2P2429433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4037f4f2ae9385a8702c805db4061a97a7b687babb050f30326e1a0f654b60a1. 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/USA2P2407998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7201e85a497eb45cbb14089eb718b14fe6241ea638e9b2def69c3d181a976a4d. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USA2P2429436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b120899e773cc7864e307f992ec467e2c43f74e150e9795395f46278064cce. 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/USA2P2429440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b353d5a915953d8084f96fdad868f47cc2e80cfb09eb8527aaff03d9f6f992. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USA2P2501266.