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 0x9989017baec2af339cb7530f072fc79154fc947442b9a838409cba3fc4837940. 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/50e4467c-3adf-42eb-9c4f-9a531625e45f.json and https://artists.proofprofile.net/proofs/artist/50e4467c-3adf-42eb-9c4f-9a531625e45f.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 0x9729161aafeea1bcec5e74cf64a55117d427b3bda4bb9716c72a98c21f7080a3. 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/US83Z2496089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446fe6a33b2ab8b5898c04e120ed2c66f6d771af88d9ed0530b0519706c23b9e. 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/DEXN82422217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56265d7deb8b5f0ed8aef4bf40863435ef8cb10c0c3a922c72f58255010d6664. 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/US83Z2486950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34f2a460830537f8b785420f8fac5af94833c408dfe53ae69bf67c3f1956e23. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US83Z2458060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ef0586d47e20f207d1752a6abeb3da654d98492f9a995f945ea7d37876b998. 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/US83Z2345797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db9632f702c21857eac7e189ac92d45701dd3abaf635429b53c099aef81a70a. 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/US83Z2335906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c79bf80bc8963f0d77b6e6c9728b04118331cecadd10d2679ea930b3ab03810. 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/US83Z2318227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e43b11b942b44d1c68d09937cacf11aa5a681f436ec8f7992387e9bd197c8d. 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/US83Z2314107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3d6b765f8d4942a75eac00e9d7dd8f6194b1595fb767062be2b0c37d2c7795. 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/US83Z2311348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd758ebc5410a73a9943860494edc7078f6421f912d3cef053ddaa91004567209. 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/DEH742228146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755d6b1392b0ecc9aa31465b97678b094540c5ddd57772afa691b14d405b4175. 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/DEH742226314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9324c1e4fc0a73702627d27a8c7df3ddcaea4853db17d614ab3e71561c715034. 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/DEY472275018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62de275a42cc0dd00a92ce490cb3d81c9f5fe7ce0e148fb996a8dcc115b3116. 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/DEY472275019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f4e48ad68f0b0bac8752bd76b7ca0d42b45464e41d665c984fb6b430f6d886. 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/SEYOK2216199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a9811aa3636c8b35d3cc1086e67968567c1f9e58920c73dfa10600765b6042. 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/SEYOK2216201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79c785cb239a56b968d943bd92392a5d27b238021bc1f2b77b07fa2255bc3b5. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:06:59Z), 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/US83Z2210223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed4e2d2f083b84139aec5713d4ea3e3a0cb0591480bff5520df706baa262890. 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/DEY472272403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53f0b73ad154edf6e35bb1bad47ae19a6354f201e0f5f614ebaa791b5fb79eb. 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/DEY472272404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e1638eae890b58e91ba61f37da8e7dd7548c53772212bb2c6681eecdc94874. 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/DEY472272405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab861a670264b982dbcf06eca49d5e99b2e6f1d06fdae65f878b902437d05d4b. 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/US83Z2507655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fbe8c521889a2dad56b706e796216fed58379cd12183b853ac67ec30ea9d33. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:02:14Z), 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/US83Z2499627.
Könnt Ihr Noch? (Atric & Frida Darko Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158b7ca111b73d2734d7a13eec5cb2060b06306fd31f22732bbd8d9a5a9da081. 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/DETA82400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ae3be6e0f1db8855c99b7eea4d237885772756ceff0fe48f25e7085adc0aff. 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/DETA82400001.