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 0x990bf7cb5e7178a847fc9300c1d4f26e0ee45fbf78dfca7eecc415726aa69752. 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/b4038b6f-0b31-48ff-9bd8-3ce957840f2a.json and https://artists.proofprofile.net/proofs/artist/b4038b6f-0b31-48ff-9bd8-3ce957840f2a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hotfingers Talks (Selected & Mixed by My Digital Enemy)
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 0x97c773a1c1e10d79a92a0bd5f7ef55c5868223c0273e8b8b2a03a8b5c3a97c8a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBBL71300045.
Solitario Records Selector Series, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58da489d1b84b2205cf5ac5a1fdfc1a043ff974209a7aa63d9635ac071aa1256. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBBL71300072.
Toolroom Records Selector Series 14: My Digital Enemy
Toolroom Records Selector Series, Vol. 14
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5af396d5f2893a8259a552fa34b6013c49ee1e216322f028ade05ce8f754f0. 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/GBRQM1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6d1758e1a2f854f9b030a4f465e091c1a206e77107bc1a82447768f438f832. 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/GBBL71400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1c2cd9a27e213f0a9bf0203091b97ad86f2c4915b399e97097223a32178b27. 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/GBBL71400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ada32b1979e0c90665d3c1956f2ab9dc3b064d015744311349934b768871ff. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/GBJAJ1400364.
Desire Life (Matteo DiMarr & Crazibiza Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb960c6089773eeab2a8bf8c6d14b381031c256f339551bcc79c4830d9bc711a6. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/GBBL71500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ff3fd129c9f253744d5b8847f1af50a92e4f9ca2a345352977913add4ca3b7. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/NLZ541500757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27ea2be8e9647f95ed3a5ab4a3a0b68574c9c2fa81d97245cb4653b55c87fcd. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/CH3131500186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc253821f9e1788718e6505061d4a9eec907976a5fcacd8e1c8ca5d435fcfb59c. 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/USUM71609531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9eba31e2ff64583c4fde90af6bc7d918da04484f3168d474eef694a7fa726d8. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/USUM71609164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a268b741174eff8e3463c471918641a09de15923837f8da5eccaac7b5ef2a70. 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/GBJAJ2000318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9145edaa13463d5211db30d69e48cc7e39466ebaf98e105ea2b4d76b3ce354f4. 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/UK4ZF2100334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4a7c8125ce218f33e1f9f11306fdecc386cb59a791f380c37fcbdb3d69af35. 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/USRC11201518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102cd8b98294a68cd77d30c86649cc20b0146c755b01f937058b4d63586d13fe. 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/USSM11602528.
In The Mix Vol. 001 - Compiled By Etienne Ozborne & Martin Villeneuve
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842e87b1f938824628d6226b84023d286b8b1ad53ba25e37095cdc1d774dc081. 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/GBBL71400034.