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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bb01957801f48d49e07a46c71d7b0c7857d07354fca10ff5497ba2f13a4331. 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/9c86b9d4-c392-4d2e-845c-0bdc1b4b9cba.json and https://artists.proofprofile.net/proofs/artist/9c86b9d4-c392-4d2e-845c-0bdc1b4b9cba.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfe9d5549d8817a3466f2297e1201c1cf23d3875706e5a89f1dba268acf644d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPB601800402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd91ea23bf71d7521aba30d7de5b2722abeb125ae288914e89eb6152e1acb4b. 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/JPB601800403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c7e3749df29f9fcbee4e79a25e116a653cbc7c74337e56c40cb67244dc39d5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/JPB602002210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e25bcb4a292f655fff09f7b6d75fbb6e139593f164536e05b9078cbc211da13. 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/JPB601902568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0209353bc95c08069e11d074a59e47d0fcdc667f5eb64fb5b7d54d823b5bce01. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/JPB601902567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34af09e7f720f1e70c7b7fb915f566843e570edabae8ff114aab8e65bdf1e1f9. 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/JPB601902565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6796c1568954ddb29d669e55ce6ed81a9d60ab5be554375f88bd0e3c32f61649. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPS801956555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5223067f3f2b1cfc0d900a7e82d7d4ae57688d5fde6cb549721c5b9f427bb86e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/JPS801957748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88c05db0a5a65b7c49993b694d7be6a0902a3633d363b59f6d95a43993c81cd. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPS801958511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1f97a33fdfe2aa7c68aeff7ca1cc2831ac923534d535d78654f87133b3c81b. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/JPS801958512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd3645e513dcce6ed6563365deebf398e9840555a408dfa2e7473334de84525. 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/JPS801958513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace6f747dbf3614944dc2480216219a6c94ed2a1dfad6b1beb7f4fe3c2626e99. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPB2410168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d98ee030eb5c980abd76df0707b2ed7aa5969993fda80905739cc9b519c640. 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/TCJPF2581699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d21976da506554236954cf7aa8c4e95f54222802640ded464f50baaff2616a. 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/TCJPA2467762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7653c8b8313e1fefb57a50b932e7c072f8d019afacff8b95c67134bc02b09ade. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/JPF662100109.
BREAK THE RULES (feat. TomaFrom86 & Reichi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04da9a75f655b636540e7a4aaa54a9f7457727b28d814392c6c0a5b9309a328f. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/TCJPU2375336.
SCHOOL OF RAP (HIGHSCHOOL HIGH EDITION-)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb71afed7e460d7a01d4bc8420413be80dc80c1803d249ca62696a6ddeff0777. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPS809913995.