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 0x6aedcc9730df785cdb586f1e6687062bfaf18e58ded5f3c31a6ee2c18d992e7b. 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/e92f5f07-6ec8-493c-96d8-20b8da8ebfd4.json and https://artists.proofprofile.net/proofs/artist/e92f5f07-6ec8-493c-96d8-20b8da8ebfd4.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 0x8040e7f0dcfaf5b7033c72c7bcdb054766ae3253e5460c9bbfc43133f6ef0a32. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CYA111100156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5842648129cfdc00f2615ff73e01d65c9b168f6c642ce056ba459c5dfae7601a. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/TCABR1367029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1eb257968fdbe234728b84989ffd74b7755567cdc71ae1c8fd77a6cc040feb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/NLF711601277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf298db16a675e28a9ce23ebf559f88fab7b3c5d1ffad813d935331af4777611. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GBKPL1794569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf298db16a675e28a9ce23ebf559f88fab7b3c5d1ffad813d935331af4777611. 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/GBKPL1794569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7cdb4bcd4a14f1c54d93a36c3831d5be3bf6d200bc18e9ed6b55c0fa89123c. 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/QZES62356615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6f4da93aa694d8f2f16c57f70e60bb5f40a646aada2ee6d674ee6cda61b37a. 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/QZTAX2311977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d3fd6e6c55130e0eb3843f03bf78856a565a0e97931872483da395720d2cef. 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/CA5KR2438340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb04d41905ca65e1ce088eb42f117ab1c31a1ea5f573dc91e5615e353fe52496. 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/CBEFB2400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae2b9e3a1f6536d964d5286d91694eeab08371961dae19daf01eb3079a8be1b. 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/CBEFB2500150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7973786040f22aeb2458e3201d325be3898ab7f3988569862f915afdccde76. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USRC11201276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c13adbbbd346e314de4f7b97f0b2e92502162f47e36f059f5a39029a35763ed. 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/NLS241502951.
Ass Back Home (feat. Neon Hitch) - Ken Loi Radio Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6264b8b7a3242078f9f3dadc50278453ef4b5cf166c47fa134b26dbf55c214dd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USAT21200090.