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 0x538aa1960d1bb6cdbf2d249024490a15c2dbfd31040ff04e0a40154b74d0ca37. 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/ff87d6e3-de92-45e4-81b1-1d7595472700.json and https://artists.proofprofile.net/proofs/artist/ff87d6e3-de92-45e4-81b1-1d7595472700.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 0x1ed250a97d1ad7b05bd35642268fb46317a09b8efddc855b24739829dbac3720. 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/UST8K1617281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62df4428099dd6d3fb93917c18702a5884da7ba210257a35f2b1a473c65a9a8b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLRD51967448.
All of Me (Acoustic Covers Versions of Popular Songs)
All of Me - Acoustic Covers Versions of Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87df26c29c312ea0e978da41f2f6538c7d62b652d7110c1c0516871cb8189d5a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/NLRD52040900.
Use Somebody (Acoustic Covers of Popular Songs)
Use Somebody - Acoustic Covers of Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3bdc4b76d386b136b76ce231b39f22144a3cd6e1fc6f40f976477868cd77f7. 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/NLRD52083244.
Stay With Me (Acoustic Covers Versions of Popular Songs)
Stay With Me - Acoustic Covers Versions of Popular Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a42bcf42b295c1796682fd52e6d84a8b6a613b25d757b24c155782255deee7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLRD52083321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6286a755c98f82c6cedf793bddc128d6409fdc0e03a3878b283fda42f210bb1c. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/NLRD52340522.
Fireflies (Live at Songs for the Soul, 3/10/2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46317302e9031ae4016afde741f0703cee18c68319e2c732c3a396894f4fa82d. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QM4TX2448439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8582cc180fa617edd0412404d0d2c5f3b6084e47915cd05c26c68f5fadf86b78. 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/NL3M12407880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c63a31b441b8e77bff779b8011112154f06ffcf423fe3fd9eafd57359478cca. 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/QZHN62562227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eac940837eeebe749098873394528aa0224a1d3787864a468573e0c2e140829. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NL3M12418641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9853e66ee2d664004ba41fc445cf78108b98dba60c4e3dba2ba562dc9acb84e1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBKQU2402397.
A State Of Trance Year Mix 2014 (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d167b7121d845e958d1cc4e41567516c76925dce91a4df243f402762d3aca8d. 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/NLF711406239.
Covers Culture Presents: Morning Chillout Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87df26c29c312ea0e978da41f2f6538c7d62b652d7110c1c0516871cb8189d5a. 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/NLRD52040900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a90a9d57531994da59c9680f6782406e6b95a204482b7db186d11b44c4fddf0. 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/GBKQU2402403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898708860c1fb972e3135bf899bb432c5e706c8440914d0561497052df159159. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/GBKQU1962052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e8d2f03513fc61190d765ad0d9158a41bf15933fb65c67b43229f868c11295. 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/NLE711600358.