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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b75b65acbecc81a3d2abc91023cc984a5aba0f17f034ad07143d94677d68534. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ffdde8d-7dfd-472a-ab95-201ac431f1ed.json and https://artists.proofprofile.net/proofs/artist/7ffdde8d-7dfd-472a-ab95-201ac431f1ed.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012f0ea8f9a8ec7c16ce2934f1476a8bb5ebb200b7549a744d6f20e091e2737f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEBL60840121.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd3410a7f1df47b68e9736e0394f01725293276ac6a0f15cbf769d9bd995f55. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR6V81104707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe2e1319d10ca3ded12f99185c62cf11a6350ffbebb516ac4e21029984e33ee. 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/FR6V80215164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7514fb8040224ad47c2f4bf0919728ce8ea15b1f797e787757b87e79da4a96. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/FR6V80215165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4948b91d8d88cfb790579068449c37ba540e993a3e7f85dbc93c2e54c4da479f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR6V80215167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3a70b3c666a3e3c464e32eccb66d219b39653e0db9d9f3a36a72c86ce4c87e. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:32:11Z), 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/FR10S1639998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe2e1319d10ca3ded12f99185c62cf11a6350ffbebb516ac4e21029984e33ee. 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/FR6V80215164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e58407b2ad624a1b4e8ad9f71b5d534750643334d780ec99961cddeecac04c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR6V81103811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5379040bd46d503450185092a6799e413f70adbcbba49df3ba2437ef0a650600. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAEB1963471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0846f940c9dac27a73dae3962c6e8e91e4053afe97978e8d0f544dcb1402805. 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/TCAEF1962204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab39c4677839ec861572df557089df12e9ec4878a7c2e14f70b6f16ba55058e4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAEO1930881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd92ee79c4558c8200590b5be3c56cb22ad4e2651fa0ca51cd5039629423e16. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:42:18Z), 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/ITR632201123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9410e3bab97a39e8ca131cccb878f9727eef1f525491bb0b5a9f82265bd390. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAGT2378481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b7adc920b0239b8513dcea799bbcc2e55c4ca9d3bb3bdb1b2d6298f944e680. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:43:29Z), 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/ITR632300601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842b8a088617f20f5abfb5fe922690a1c7cd2033928fd5fe34d8eef76686647d. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:07:40Z), 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/ITR632400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44d94ba1c54c52d262b7b99a68e0e25ab72dc4c6a09d6d4a7fc2ec9fcedb07c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAIJ2465491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5112ba22ab6d9f6097e6ecbda46f98d2acb2bcff92c3d6df4bdcb5073733412. 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/TCAIU2458968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d43d981475f870ed0fe28a58850f94cb3267fae36b4503a1f3b8db52cc1f65. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/IT9RD2500094.