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 0xf49877191dbb1071f47b4ac19c7d7576e9845233a0f50cb2473ca245042ee5c5. 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/8f7ced4f-90c4-4c00-b82a-155a6cc51ebf.json and https://artists.proofprofile.net/proofs/artist/8f7ced4f-90c4-4c00-b82a-155a6cc51ebf.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 0xc11d58f4e1efc875a4b97756f93f0c6b0a7b700fe781f028619294536f87df53. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM6DC1551343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dc2623888df8071263b15471586e22930a5de50abd183dfd0a3eb8602e8daa. 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/USZBG1202691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc3a3561a5ba53a3476619d9c142a98df38107b485a55c79f6ca164bf847f32. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:37:35Z), 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/USZBG1202692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af49ce02619c664bc23dd62629e0af718f0638e9736bb549e2ea0cba0127147. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USZBG1202693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442cea9bc964e7afca9e384d01ec3342bfb07aace7a2a831680bf91648aad2c8. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USZBG1202694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13e7b263661c714300f043af2897746286d52df37baa5be89ed45c267a8683a. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USZBG1202695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a6378a4e5595a0185f5e0c240f66af1a7c49833fe6189b93fb66972a2858fc. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USZBG1202697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77b7bb1a20437a17532e2b47770beb3f4ff67434859c46ac09ef534d3ac601c. Chain 2 (Bitcoin): anchored in block 957692 (2026-07-12T10:37:51Z), 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/USZBG1202702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422e52707718cd1446d2fe4a23dd7639be7dc10f3d53ca5d0732bbe76962a763. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USZBG1202705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49413bd4c2e9de82a062d0f4ab58a13e9fdede413bdd318830b4b529c0dca9a. 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/USZBG1202706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c0a3034b87e3a90922f8843d27172a253cea2ec16ab1b43929e62214676df2. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USZBG1202707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbda7c988d68e1eba86776494a89fcb85d2a4ae0ec14d22bc9a1ce32e9c05522. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:06:27Z), 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/USZBG1202708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f152f244cfb66e5ea3c0e97be5e330beca0bda400108e5516911cf9305f6194. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USZBG1202709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eea713d1d1aac835ab7102f092b297e7424bd46aab0f2abbe2d3720b92e4616. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USZBG1202710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971972bebc02ede19c3335023c52757ff18dccc3ce083e7b593626fb942238bb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USZBG1202711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f38f4603dc72440f5d027ef57522a5fa717d292941afd77c88e91f4f2bd8a1. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:55:32Z), 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/USZBG1202675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00473ea0d47eb08de96d0fd11e4052415244e3d969c709c8973e61aadb3ec5f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USZBG1202676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6908e32a25230c17013ed36295920a3016df90ea9ce62736542f34d2d8ff63. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USZBG1202678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed24a64c48cc43b4bdbce0460ae90ffcc657002ab2b641defcc28397bad99d6b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USZBG1202685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8603564700d9dd5033e4b6f6a0529d759e2357d01c9c446ccd4569b9f4d66977. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/USZBG1202686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530e90c8e94a037937741ebd2e70d960a952d593783f79910030c7d87453194a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USZBG1202687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01bab5cb856620dabfa1adf5bd0ffe3d77e8a708fe585e92dc767b46ecb220c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USZBG1202688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c0bac2dd9a78dae449fb2b2b18405b4aae8ca15347313383f445fcf3a64f5b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USZBG1202689.