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 0x71a0e22ec414b894f3ecacc97874eda267bb0b2bba3482cb411dbdd113bc36c1. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9a8137d-8ffe-4393-aebc-f25d21509550.json and https://artists.proofprofile.net/proofs/artist/d9a8137d-8ffe-4393-aebc-f25d21509550.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 0xe6ebf09989bd524268f316eb6d8c34723563e065af783496816b03dae1033427. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZGWX2093275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1086c8c4e4d632305fe05795f57b479c008d24a40337e7dba28e7fdcbdd5962c. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/RUA1D2154394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd75b44b9f3f6eba1473f5e2b6c734eeb1ff9fc9d3cbb4a1362fcec4235bb66b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/RUA1D2154396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7bfec0204fbc5e4abfdbc70d6dd930e8eea99b0c4eec5a272c9f80743c272c. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:56:15Z), 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/RUA1D2154400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6502e0c581ccb92747104b4af2f6d32cf7c33f2da08a43f84d91b1e35b47c61. 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/RUA1D2363745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a60540b169eec89d6b8b9722a19ff3af4e7947e1c46888cdea4207ecf719cf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUA1D2363749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe197325fe436b78ce42dc40ca2fc032264f1144df2a77ad790e0a8f3291bd490. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/RUA1D2363753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261551406216835afa30355de478206951e5dd55ba8a984d5c87c13e73fc4f59. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/RUA1D2363757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65ea4c35ee2ef5ad08f0eb14176356a7106cc6d39e9f1dca46babd569ca057d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/RUA1D2363763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eced8738ba13209bb49bf97e724a98ff77692fd5bc0b7e847a20dd068ed433a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUA1D2426686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cb74d175ba04052f0d534b524e008cc98e1756acb50df1b873abf2f70aff6c. 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/RUAGT2401098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02d84a52f4cb09d88c7fca3e733c225805266cab6ac125a46eba6c63d534919. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:03:11Z), 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/RUAH62421803.