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 0xb2c08e5f4c2eedab94da639ca19a2cedaae16cef580d46f3082e7a63247563a3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20a77f47-9047-4f1a-9e42-47047d41293c.json and https://artists.proofprofile.net/proofs/artist/20a77f47-9047-4f1a-9e42-47047d41293c.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 0x913adea030f4cb1f3c29da8ffbe3fb032e84a3595bb1cb0d072fda187db9d1b6. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/AEA0Q2452562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe531e4c179d811be3d6db96bdc46e3abd99b46e249f524793b711c98e7e7d355. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:04:04Z), 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/AEA0Q2452564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa09c5eee0bec414a668e5889357d5ac0fc69891b352fa23f9b3706f24281f64. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/AEA0Q2467314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074ab73756854b63647960dba35a1a663699bdd5f72bbb6cba1391274043a92a. 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/AEA2W2508474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff35c53470156aba69aab2f409fc8e5d1146b30fb8680235cb12c91cebbf781b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:30:50Z), 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/AEA0Q2483710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8298e9a9828dd6ddb62c697d5dabc9626ae80d7c8aee2ae870ca8034ec89a6cd. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/AEA2W2516430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f4c3ae46d68cfd21e9ea579ad1a8572f973f77c3744c79a67fd8469d78675c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/AEA2W2504222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f4d1d91661d19be63fc3324997c8906086ffbc2d91c1bdb8e2c30a850e984a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:19Z), 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/USCGJ2599722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb383be1be47649ae4ba999cf860c366f0c7b0211e858686c7453cb9bbe6a15e2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGJ2599723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b2dd298b347d1a5a4a33eccd42f452212ad0428e33184cdecdb2a725c10308. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:21:16Z), 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/USCGJ2599724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764736397d68072ff084e26652a38738a2e10b18111266023bfaa739e98cec57. 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/USCGJ2599725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffb82efd648220dc17044cb2b8c0fde41b9702a8e071fb8e096b976886618b0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USCGJ2599726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd058f138439b0fcfddd200e3085113e9e0a3244a6d9590573d81e4bc19684e8c. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/USCGJ2599729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4e6dfb64ed7abd66600f5d0eda8972ad523a447b73c39bffe9ed746a91d0f6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGJ2599731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4bf902af9b48e631ba638d720f2cc821b2d84a38a87a1d685cf8c129eafa4b. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USCGJ2599737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de1422318ef1a3c8a405845538d262526817df93b3d090418edf56a65449e5f. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USCGJ2599749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba4c3685ca6e4026f2fcee468c21c11f7452578368c2cc2f56cf8bb8deaee2e. 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/USCGJ2599753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74aae10b7706214ffce77318ac113a8e083b427abf5c856a3298865c5f373cd. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USCGJ2599754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e9201cf4ad76a47c3a6ffd9e5eb28aee59375593b522a1e0d0260f35554878. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USCGJ2599755.