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 0xdf041289c1bec9759bac200850ed22a6fde1ad01de27bbcd21ec83449bff14f1. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f12726e5-51c3-40fb-b632-aa8d423c073e.json and https://artists.proofprofile.net/proofs/artist/f12726e5-51c3-40fb-b632-aa8d423c073e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
With Or Without You (DJ Wady & Dvit Bousa Remix)
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 0x52176ed2a150cc1d2cfa785a036f696148529117c802c89341caf394284c6190. 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/GBKQU2120582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0863819ac87f0d98ffedcb50971813b0684503ff9c8133b93ff1ead3e350eef8. 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/GBKQU2120588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe506bd98f75854e9a9b069537a933744c9846d7b7fc0b1f092cbcd493acc38fd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBKQU2120583.
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 0xb791083f82f8bc3adc18737a055d19e05d08094feb9a776c4204c8f2264e8545. 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/GBKQU2117969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4b7ec67b6e5f3e500c74dbd84e5b51c3e3ffe18b2f8d7bb253b3865599252c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBKQU2117970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34993ceb97079d348c7617c4eeb5be44a9ed7e2bcc75035c1f27a4fad1d7955. 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/GBKQU2460595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b09ca0bac19549223b8ba860cb56e6fdc2f57a5573e917fa9ec1602d08893af. 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/GBKQU2439483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b983d546b533a825b8394cbf07d48f60fa39b95884cc4e5f2e451a901d3a9d5. 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/GBKQU2413488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc4ac69dc1fbbc5a32ef89e0352edfaef6f32b240146299a4d140a7c0c71364. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITSV22300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc2ce963c7d5ad6aa24d42a4302b2ca2f6585f17368f67c262a3e4da86bc80b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITSV22300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc398974ca599bbc6917794371702a30b00bba34272332fcf135af55a6352a9a5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2256091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2317aa29213cf36e0ab785365ba834f8c86006714889f01a8fe33c9f0d8215e6. 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/ITSV22200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc60fa6164d08b510545ac4251130bef9686f87e1ffb3cba4c1aa2181ba9219. 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/ITSV22200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab7ab4291a96b1d28f1c6d20a7045f3b91289b2b0d805a7bf6c90962a0672b6. 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/ITSV22200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f54615ae09905fe3d8c1cae5d080400c4e4458c3aede54ea7eab5382cd8fd6. 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/GBKQU2200487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb99704db3aebba2a3a2451584350d74b50265f6f8911560866a55387562efc9. 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/CA5KR0013289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1497ece57bda8e9b8f3ad990fef77cf02751c2e52f66b3bd44ecebebd5e622b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2527621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab3675f583ceeab4d02d9676890d4d3401cc75a9c8a7f214e30307971369a47. 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/GBKQU2527620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2757f5ba16482cb5e952b16c18a8e78fd62640b8f87674a044805bfce55c6f. 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/GBKQU2522796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a604b6ba207815892fdbb54898819d285cb4855f5e2a80bebb9114d073e77cd. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:46:37Z), 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/GBLV61514195.