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 0xa07fd78692733e716f374c237cd5bd22be768669ee2190f490c616fdf89a3702. 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/9af05415-0406-4ba5-a883-f0a7585d773f.json and https://artists.proofprofile.net/proofs/artist/9af05415-0406-4ba5-a883-f0a7585d773f.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 0xa67d0a37a0d51032f377c8d05ec2ea59d27f4a98303e1080f2f4ac2f03ebd911. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBJSH0621505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf935766135d1ec1f8c3297b3ee41ae702de99a6254f5a1a46022bd27b08baad4. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GBJSH0621507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae63580daec5b20602808953434902e96b62b47b0bddb4ac7c89c1bbbec3b40. 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/GBJSH0621508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9695611ae4beddda9db4f0e170880a08d996baf5438add50b376dd009e81c0d. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/GBJSH0621511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731f11f382a92529125ed744ee822785c445e82513c7177c53120c0f3fb630d2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/AUVWE1500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f0125791154458e4fe25c001055c016b65dbb3727afc30063b86af51a9dade. 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/AUVWE1500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0bd47b9aa7cda54393c821199872c33000e19400e4f4e6a01257e525dcc02f. 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/AUVWE1500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14dae9122e87b7e4d2052d8a58ec92b9e291cac66a3d7bd42e9843d72513b29. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/AUVWE1500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a05d3c3d0827c0f8da15ea45755337e6ee8cf043ee1d25c8946b388bbb1ed90. 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/AUVWE1500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb42815d572713495eb7fa4ddfe5b4fbb05e917041d42ed71a48b98187f634c4. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/AUVWE1500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c60848e70f006c1673f0e247972f01bf8cbd4f5b546955d18475dc67ee5e48. 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/AUVWE1500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731f11f382a92529125ed744ee822785c445e82513c7177c53120c0f3fb630d2. 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/AUVWE1500037.
Funk N' Beats, Vol. 1 (Mixed by Pimpsoul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9403b5d8e6043ec0e698cf5ff00ba0b9826534d11170fe81221710df3231e2b. 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/GBRGV1350216.
Funk n' Beats, Vol. 2 (Mixed by Beatvandals)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf1af608a81eb5d378b36f0ebc72e508a818b89a45c4d524d6c7b833535f6dc. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBJSH0664101.