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 0x5207f00382ee2a6faa7523c3d11473cfbd50e4774256a567c1110d0f43516eda. 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/645f30cd-29a8-4e3b-b2f1-613bc6241fb8.json and https://artists.proofprofile.net/proofs/artist/645f30cd-29a8-4e3b-b2f1-613bc6241fb8.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 0x5fac41f829aeb1c555a3c3befbb53c65c766a4e324cffe67eca2df873a5a3e5b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBMA21862396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb6ba8e6f2fa920945a2a40e9b355d0116f4200bf4578448e2fd98c6ab3fb4d. 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/GBMA21862398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d736e7a79dc51522594ef3d4332733b1251b744f46b283df1b83cdfdd9ec752. 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/GBMA21862401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d2b90c277503338dd1b5f97bc1ae61d3deacb302665d894069d70730b74a55. 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/GBMA21862404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39c0396bb407fc5681ef782fcb09a20afffd4d6db861d72db010b349913a14a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBMA21862660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b821b905da366ae55ef2c8ee8c276f8dd999a2794149394960cfce3b4f36ce5. 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/GBMA21862407.
A Solas (feat. Mario Spinali & Real Phantom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84008bec7584e4858937827f64a815c65b4719b04a9eb23ab87fcbf9972ec7ca. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBMA21862408.
Maxell Showroom Sessions (Live / Acustico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215a0cbf1b1bbdb60d485698bf59e0acd8819a75ca0adb190e3d296f64546a61. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/GX3Q92336395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e1b72bf6ea42fd7d2d34fbe198bf02618b3a35ec9a15e7e3eb6e0b5cf3eb7b. 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/PALM21900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53ec0fd683cd8e1f5d13ac32bf90c397fed6feb1b5062a89bd152ea9e06b0ed. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GBLFP2250600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6098df5a9bdec1806877c9503a7e4de1289c5714e346f8d0edfd88063417b518. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/GBLFP2045780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9d59ecf4a21da83e0cdf46fe25af79347dca41958b7df233a6d1e8f0ecd9a0. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/PALM21900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b609eda437821dfbc66eff822a186b7147e639c2ae19cc153d4c3de7e11895. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/PALM21900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0988296a05ef18cc5649b2370a2bd5a62886bade08785e570a6b792d8525fcdc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKXN22314211.