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 0x016c642417e07533be259d41171f90feb70dad21155330c66ffe92052e874ef0. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c941fd25-357f-45bd-9a60-38be8222956f.json and https://artists.proofprofile.net/proofs/artist/c941fd25-357f-45bd-9a60-38be8222956f.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 0xc9b53aebce20494b99bb4544d06335d27e1f5a629b676608c8c96ad3c7d01426. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBLFP2292342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e3e2e31da32781f4ee9c539e6bc7fde703ffade5241554791c932c54c96eb5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP1716880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c78f1a2adb880e9783e02811e0c800d1491dd68759ba2b780ea4e7d5c3ebc2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLFP1735443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f64f643df690dce4fb72c6e0a0bc4b46159a96568fd99ebeb531706c4128030. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCACU1638777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10d1798f4f625b37091de608342da97a7d48a0716027db220813332d1c8b396. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBLFP1829367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad8fab06d85e6f4820cbbe425d016580f57108b53f9635170400738dc845888. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBMA21867727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad8fab06d85e6f4820cbbe425d016580f57108b53f9635170400738dc845888. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBMA21867727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d6e649c5c6e0ce4ec8934810933b9fb334ee67a7db8692bb8c79e8d9591a99. 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/GBMA21874442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d6e649c5c6e0ce4ec8934810933b9fb334ee67a7db8692bb8c79e8d9591a99. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBMA21874442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171bff0925afd990d64e68f8ebc3c38bfee28c865b7a2c54bfa2d229e2f38a99. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GX3Q92336842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c6ba481b22071c8e301705fe85ac7ceda8f0d0e6ef1e76ee95f31ecd75143a. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:48:47Z), 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/QZW9K2401594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3a50e0f04eb408dc93ef07ccbe119b4f931b130095367cee1d50266e8bd852. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNJV2512108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62118893f5ec93f7ac9c66fd52d5f789af68201245bb370203bc212d2778a4c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXHND2502928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5119dda85c71c4d93e8971b5edf72b6ba19727437b9cd6535a514328d431c02. 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/GBLFP1816942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdd240972cc7d48a85e91fef5ac69c0bbf7d1a44a3b1679bb8d6f1e0c3c0f01. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP1735803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19990817b22f12aea43c869f274ccd1e5509274ec6f41521be7023e863db73df. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKG7J2100214.