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 0x4c572a71032f320f32ee8fb72a7dda3768a843c888cb0af668a1b7f7228f7f00. 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/c9e22788-588a-4521-a7d3-9df67c4e0556.json and https://artists.proofprofile.net/proofs/artist/c9e22788-588a-4521-a7d3-9df67c4e0556.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 0xfa970c89b0959bc2e14b17c5fd7a3421aa15ff8f7d7affc942fed62081fb9feb. 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/DKZVA1962420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d96d42277250f9da2cfb15fafcbf1dd914657dcb42e6b6397524484cb76038a. 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/DEGA22003077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a80152b4b800b4445f6c5a94e29a2df05e264524cb297ab902695e2e234bf94. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6N2177718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0b11c9678b9fb86e226f57a6a8bf7cee26cfa93cea1447f4601d77cd1869d5. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNWU2173178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb50e3d1496ffdd40e6d22de19bbf82d6f661942c924ec2cfdbb7f15786926e2. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZPLR2168635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004bcd0c57aa399c29e61d3313df048fa2dfbc85fa229f89dab03f83ace889f8. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZPLR2168634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c91d1dccb7fec9654750e48760dad761f3b92a82083713351b2c8eff33c7bf9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN32267179.
Mama India - Blazy, Groundbass & Tijah Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b303c2d505268b7751b559d523a7c61fa2e57ab2388131d2827530198df116. 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/DKZVA2200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2caf723fa1248272dbbadaeb648435f8179c08a782400db04a799512b9142d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZES72320785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517e3e7b089cb428bd517659b6fa717f2ebe6a001814aa0ca5da732cf622c047. 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/QZK6H2402547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36324e4df0c1c67626eaee5eb60593a43b22cc60838642ce81ec43c8638b5fc. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBKQU1451262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11185fcb9c560720b9df5f7b92cefd064021e118cbd2b9461420469af0437ea. 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/DEBL60976582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b303c2d505268b7751b559d523a7c61fa2e57ab2388131d2827530198df116. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/DKZVA2200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8f76cbb190f28db350c614f8222f7725f4573f611e3ff9ff2fa9848624fadd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZS632390038.
Progressive & Psy Trance Pieces, Vol. 16
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfef7c84d7e17ea9edd3108b75ec755a9faf981c4ead73a6008e45d26f64587. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEGA21602144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30b8dbf46d076058a8e8448dc30f8372b71fd9809877418065beb882decea01. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USQY50966910.