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 0x4a50b4615c66f6446d34c421f950ea83ae7f1db7c3d6987c5e9ead39b02c4a6d. 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/dec19bc6-3d10-41bb-bdf6-249128866c9c.json and https://artists.proofprofile.net/proofs/artist/dec19bc6-3d10-41bb-bdf6-249128866c9c.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 0xb6d65b3aea41934929b58bb501283d82d6fb0a94d73feba41ee92b76dd556351. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/ITD451600122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832326b54df95a607420aab832a355fa38de3c420461e61ef9c2f1aea54f9933. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBKQU1717116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61670152a4460ae4c31cb562ccf717bafa4257b466160589e696f80e10969621. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/CA5KR0003659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff65071621509b7468781c47fbb294014f76a6578cd3b818114583fb23ac418. 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/CA5KR0010948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa00d80ad34240075882523e5da2b1be5b70e1de1ae948815d94d09ad2cd1c8a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CA5KR0022700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03848320ed14526778521fd1cb34fb71d9b183c0dadd645d91c72bab266f473. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:32:05Z), 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/CA5KR2224728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64ea73818989ed23470bf48dfec23a0fc5f6b57ee11feb454c4e4ff07caadff. 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/USA2P2241265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01546ef36caf2709b5d30faed183cd6855844cfdcd18325e0fbd4cd29865f79a. 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/USA2P2258316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f65eb9b19b1ca7b94f3971641f5d834afc8191a6206e9236ef669f7e0e1fecc. 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/NL8RL2423905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cd1a689523aee8cdcbaaf2b689c67d433fd2c2627568a63a8200a8e1c8e891. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QT3EY2534892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc9194b043a8faa2700a9a943d0a036465e4f0517d33fe32bd361424e3c50db. 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/NLQ8D2300684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d5a440dcbb04001a310801864118969c0fbfff856669362e5f1ae6f66fa015. 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/NLQ8D2300161.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33592f3519d8e8a9bf3ceafb7af36b62815eb25e371639ebd667904abef1dd93. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLF712106267.