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 0xa6981d28f3a9c10ab4150b8eed2a975b3dd5ea2fae9d6035152376f23e8a5db0. 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/cd253fb4-26aa-4626-849c-976194f9591d.json and https://artists.proofprofile.net/proofs/artist/cd253fb4-26aa-4626-849c-976194f9591d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Blue Planet (Original Television Soundtrack)
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 0xe66b018fcd324a5465dc6efb13ab21ceee29b374733699fbcc8569271f9110ce. 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/GB01A0700850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef283357cc65d03f12f36db65224b8d721a2c21760eaf616312f2c6e98e8107. 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/GB01A0700851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335b5c077c6ef791fa1abad39d3544afd85a8387c374f95ed207cf1f2fb2bf1f. 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/GB01A0700852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ded52a5f6d8e1123005dd34277d54c219d26330dff4c0707bcd88ab046b09c. 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/GB01A0700849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2195f37b171ea721830ad99bd3e9f9da95b8733c3b5d8a46b9765f54da0fc0a6. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/GB01A0700853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fbe311cfcb6eefe73a4c393fd5999dc3bb934173137dfed8e39c8cb32cdfe5. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/GB01A0700854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2984ac067dcb208e5d3dfb969e4f1a09ff95a30d53958a285565bf7d5ee26427. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GB01A0700855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa470632ee934045373fd8190b25d7b8eae844ba0f9ab664bd882886d7b9a8353. 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/GB01A0700856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153b5e1271716cbda51caec72f96b620f4578990f70cd3be66b5c740717992ac. 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/GB01A0700857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8531a846669f0b0a7accb88df23602ff2be1c0ef11b16edc528c75bcfa86802. 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/GB01A0700858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea552552716254bbbea5d8d54491325956c2542beec892b5511f7dbb4fec22a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GB01A0700859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88015abd7f64fd6473dcc8cb0e287a14326ce924504d69e31c217c47d1adc4d6. 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/GB01A0700860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c30c911188fd0a9558bd27394043caeda5cc643e626e746bdb9e5f16f733cb2. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/GB01A0700861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa49bb9eb365b11a9ad6a82bbd445f5ec0e2537736b09ca65d7bd579e9c792ae. 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/GB01A0700862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae16fc56eaab83e8cd67c49b01d6fc4d08c788c75e13612fbf399ce8579fb1a. 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/GB01A0700863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969c15f67c2f7b993dfa95989ffd8af48e9fc4d684c748395de73b5429d4b659. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/GB01A0700864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b6a17bfdecac26e0d4752e90b63676cbcc030bdc93b46380098a6cb8896ce9. 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/GBCAD0606288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06feeeee2f537edb8442261d6d5e158fc8c1b0aae93ddf443e7d3a7a7ed190a3. 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/GBCAD0606290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aad215c22a3c7dd3b54325e5ed1ba1a9fbb0038216c97b2f36115ceb37023e. 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/GBCAD0606295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08b273eb9d422a80fd8627aac50df35103c8102d8d2a7c14687937e5f1ba0c6. 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/GB01A0800088.