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 0xaadaf399ff12a20d3e0cc762d89154da17d851f67e804f54f3508d167defe030. 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/43cafcc6-7e63-429f-94c2-7667ba2722ab.json and https://artists.proofprofile.net/proofs/artist/43cafcc6-7e63-429f-94c2-7667ba2722ab.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 0xbfc0b43ad662fa5d90b14e3636af6a877884d3efbe9010e3bc42c27dfae6e8e6. 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/TCABA1160370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ca614d75fb927cad6d555d06d249fd8509a2f8e97bd1e44356e6c16b708aa8. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCABA1160374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517f8b4a535f7efb5fda694d731af977516990990ee1ec7b5cbbe7faadb19f38. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAEQ2083817.
Things That Make You Scream - 10 Year Anniversary Special Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a6d07e01b057a0ee9949c20fd5a8e1666a7811281076b3dd2881ebb06c99a2. 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/TCAFX2178308.
’Til Death Do Us Part (Original) B Side Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fb375477eaa2cc61aaf9a25b02eecfac89ba537a0dec3784b26d74d1d7bff4. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCAFX2178363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdedb20323fe25018de4e368114510abac6917449ece7fb485aafb67ee8a11b5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZWFK2452862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0cbcb88d211df477c3c0b92bdcb9f7b768232740622af3ca4fdf51e00ac3a3. 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/QZZ7L2429443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdedb20323fe25018de4e368114510abac6917449ece7fb485aafb67ee8a11b5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFK2452862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0cbcb88d211df477c3c0b92bdcb9f7b768232740622af3ca4fdf51e00ac3a3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7L2429443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb307e54f8ef7ef3fb1b3687161ee1cb0353089cfd1eb223f4c70f73e9c2fe70. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZFZ42524610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e254fabdc0026485c4c5f4a1cd1a0afbcc8f2376c843bb5f97ba92dd442856. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6P2589768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657700527dfe9b90db0ca69b004edfacd9ce3ae0be1d3091f37a08b843bbae6e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWZ2564821.