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 0x00c42b539dae222f331ff2632f3c4bacfd52706f95cc4ddf3ad665c7aecd7b02. 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/9ab39d54-99fb-4913-aa84-93c1ff8955c6.json and https://artists.proofprofile.net/proofs/artist/9ab39d54-99fb-4913-aa84-93c1ff8955c6.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 0x0ff5938a15814d2314ab543a1a84d8a66bf0c063bcf064d340d9b2bbdba4426f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DEN120205985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967a6724f8f43bedb59b25e09f44d00098a9c66f55b6968458d5e07ce3408f6e. 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/DEN120206084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d385240b9984e45558a7361ba16ddb2bc08eb5fb72fe95d65476301b65ac6e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEN120206094.
Lost Beats, Vol. 2 (Instrumental version)
Lost Beats Vol. 3 (Instrumental version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80557f59703cd2c44bcefcf131a98030ea4bbc5e5b62ac1ebef1bf09a4876114. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/DEUV91600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721a3eaddbe67a336c5929f20c6d62227fc0153de9837076fe609c1c36bd0ff8. 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/DEKF22100577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721a3eaddbe67a336c5929f20c6d62227fc0153de9837076fe609c1c36bd0ff8. 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/DEKF22100577.
Einblick Zurück! (Mixtape Classics Cuts - 1996 - 2006)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd05e62391258564d6448914342cd0bd2cea8fa265cb54236984085725deca3. 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/DEA810600804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb129a26922efa99aa20e05a961f93706286bf6c0b89ea06cd247b0cd8c22c6. 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/DEUM72310960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3fb04098eda5454e05bac3d5e7434cc7db6d9f8ab50f90bf9ec71e0c343a93. 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/DEUM72307176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfcae37171a314646a4390a0883d3cbdb8807afd0b52268596e4c0bbb2db7aa. 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/DEUM72312995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3fb04098eda5454e05bac3d5e7434cc7db6d9f8ab50f90bf9ec71e0c343a93. 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/DEUM72307176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7268d124bf2699365b29c9842b36679b84426d5ce854e77cd762ee12ab331e9f. 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/DEUM72310961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713d41eac084e902853824a19144b4e211caa477e8dbea837b3f9344f754a4f5. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DEZC62401653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713d41eac084e902853824a19144b4e211caa477e8dbea837b3f9344f754a4f5. 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/DEZC62401653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5376f7e7ecaca670f1031c7b5e0c70a5a827f4fb5723cb3cf4c57a02b4667141. 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/DEZ651709986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517b6ee19fcf8a8120d4ea4b4a4e978ae16ccd4511cd312215bda0f82eb5c8f5. 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/CH7812222619.