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 0x0e954e44886b30b840f2d784ce929e6db1cb528a78ada8b6ca7648f4d61c4393. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76733d4c-52a9-4b03-8c88-460428e3f2be.json and https://artists.proofprofile.net/proofs/artist/76733d4c-52a9-4b03-8c88-460428e3f2be.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 0xbb10e6330cf01f49b82784c18f064c3b71d019a0fd69063caf5008d7a99632bb. 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/FRR640500028.
Pure Salinas - Koh Samui Beach Essentials, Pt. 1 (Compiled by Bruno from Ibiza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507ac20f0104eb99abfb7b6535f1b7887ca180cd5efb18bfc7154c8d98cd2c52. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEU231500678.
Pure Salinas, Vol. 2 (Compiled By Bruno from Ibiza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aafa9d8261bb7e531a51d3c6658086c5393685d19bdf4312556de39fa00ee9f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEU231500661.
Get Ready - Halo City Deep Vocal Dub Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5e8831b219ab66d435d7dcb8c1d8665658a6aa89149965c9c341731979e025. 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/GBENT0100540.
Pure Salinas, Vol. 4 (Compiled By Bruno from Ibiza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8debdb370dde79050f6a7a702baab0d975c8d7f7241a0db11678a6c5ba6479dd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEBL61278236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b867db38afa44e8bc515d17b73e3ce76deed72722cf3aef553fd2d7bc4c550. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEGL61200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d1ccdf47da84357d454b9d5838ddafaf5fd2315d94de817b52ef285ad26768. 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/GBC7K1112205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c278017f854a1f198ff01538148057fbb98feac04b34727aa2921c25c5593cb. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBHCD1215008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f71368fc77bbf97a5aec5d7cb96f81c7b5a87d2d7a41b69a34f7b374679ffe7. 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/GBEWY1100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeda05a3a5ae1356f40b53428fbe9d34a069815fa63146d188fa4d5bc07281b3. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/NLSB31200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b85a2836315dd2270dc9502aebf79ed2c590cdea338b6a091d360ef626b9b8c. 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/GBTEZ1100382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e3b0aaebe2f2ec09a7999472f31eb9c90013b91cd0e506e23172bb78c4d585. 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/QMSNZ1501654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadab487d08ceebae9cfb4fe0ef826984a673a957ca46ca82bc42ba6146eae996. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBGNS1401241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4df8753383344e5fe73a7d3c4e4cd50492fc859a9fe224c9a72644e72a836f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR96X1655974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959bf6c78056eb2165730b2667df3932527eee251b746cc6ac4043d9714395b2. 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/DEGE91100199.