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 0xbdc6221cc5d92c621135248a36dbc9b9097fdd3a7ae6d28d23b78192ce37001c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92748a7a-7879-4d8f-b34e-4043381b54c4.json and https://artists.proofprofile.net/proofs/artist/92748a7a-7879-4d8f-b34e-4043381b54c4.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 0xd637d334d198bde9dddc45354a45b47605e9cf8b23f380155893dd73c86a1fbb. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZES81906980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956dbb0f86281f688479208cb2d508cdff62d4d0c3738cc8a4e1e05fb5ab04df. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:35:28Z), 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/QZES81906981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6169e1b95713161317388eb2f2ab0974d4ac087765c3f627a4b0c40f760083. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:53:00Z), 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/QZES81906984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06915f8adcca5810afc6d1dc0eb5d4763c2928b786057af67bee903ff1bcbe89. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:23:53Z), 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/QZES81906987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d52917654ec47a37f8563831a128159dbb37d669ef30bc5d57a999b67f44053. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZES81906989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8994474c9f771095f4c65dbb4c31e56095464590cd8450271147710795a22e4a. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZES81906990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe028e5983ecc99edbfef77711ecb63e0ef7217496c94fb3d7181ae5419749a3b. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZK6P2100937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bc81fbecce6ae0ec9627ca3565b1c05edb87db1efc6a0a35a5ec5537f43906. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAGZ2380473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee5730f6d029ccbf2d6206a465fa6c25120bd7d99cacf527e2808d51ec4e0df. 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/TCAHC2316472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407b6291bf1efea67d82334555fcc4360959c10c82719c5153386ab3beb454d7. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAIC2441867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17ed7ea564d01c692782bcaa49323c9d4fd847545ea25a30b83a535a233d6d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAIJ2483936.
The Cover of Rolling Stone [Feat. Margo Price]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a45116a675de9d758cdebfb5c0eb9c7f4953510942586d5d8bee045158b76e. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/TCAIH2448753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106eba9e0ed4c52e7bba2fb76a5923e6315b14b808e6294f85372945f75bbb46. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TCAGW2392938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021504f1d7da4a3234a618ca27ecf781ae5953f80c6df056d5a43c8f72db2ad1. 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/QZVEM1837054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bc81fbecce6ae0ec9627ca3565b1c05edb87db1efc6a0a35a5ec5537f43906. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAGZ2380473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407b6291bf1efea67d82334555fcc4360959c10c82719c5153386ab3beb454d7. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TCAIC2441867.