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 0x78e73a8eafe969f0b1960573bb74f8ee80e897e42a0e6a1fb2c3996103ca7f8e. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ac621e4-2de9-4de3-a558-d1487f97327a.json and https://artists.proofprofile.net/proofs/artist/9ac621e4-2de9-4de3-a558-d1487f97327a.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 0x9f0f0682faff9c8794338a00a8d949131543a7c4f5b5989d4a370d50b8676e40. 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/USA560559734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb127fc82387031e34d2ee29d4aa08ef09a9bb1ebf2ea9867861ac2270958c25. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USA560559735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403f35f53bbb85a0cefa272f9c4cceff6472b6df703219e5e555c2961a7f3be6. 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/USA560559736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af71fcd12535d48235c887382d1197246a0f38968554bcfa4d378963205a0be. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USA560559737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e7ba09c2f6145e07eed46a996dfb73a0d679ebc16ef203cfb3dd90296d64de. 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/USA560559738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb578c87213089de3a63f81dbad5336a10b4462bd231b507b6ded37e5c3f3e40. 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/USA560559739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9732f10e6f6d31d9e325979a039a96df503abfbe5325ae408612f499e21904. 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/USA560559740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad65015a92b65e6da1149fe68fc11405434b62427213d840b57ea82e35846bfd. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USA560559742.
Salsa, Sweat & Soul: The Best Of New York’s Latin Scene Today!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fc1a34b97f22fd52289e35f8861ff484897793a5b51708ca8b68a9ccbd7668. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/US7SF1353168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df479d630867a9122d6ff7a9dbacd3a0bfa03840fff2c1bfd464ef7c9586040. 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/US7SF1353169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a495b6e0e92bf1335d0f6682832570a2a1072d2fe87715fba68342840f84303. 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/US7SF1353171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fe637185af12135d7bc663f2365ea0dc2c7e99bfcfb5eda6dfb7f5dd188277. 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/US7SF1353173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157adb9650fae5312ace55db67a5bbc3d8c780431dbdfb602bbdceb74a74058c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US7SF1353174.
Luna Latina - The Best Of Latin Jazz: The New Generation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa831d05869b1254d028572b9e7eefa1c0280bae8324c7071b575de440f1ecc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7SF1353155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a567159c4e6947afd8dfa4a53975847449b45e5f68c1aaea989861bb161824. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/US7SF1353156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa18fcf4b779db461d7b4bdd569b8d50e52bef4dff034ee1d5d2e79587e38bc. 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/US7SF1353158.