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 0x23e16c38c33836cf155b9dbba5318ca4954feb7850f303750c2c10b6d0cc1c18. 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/fb648ab1-d972-47c1-9f56-9d0fdd2a8cab.json and https://artists.proofprofile.net/proofs/artist/fb648ab1-d972-47c1-9f56-9d0fdd2a8cab.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 0xc206141e2f6025ed0c1ede66556c5d90e094cdb01d1a01884e75c683055230ef. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USHM80856140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a29345c157b13c5ada06afa84884ab85baed14bd56c7095254fce8e0ec740cb. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:36:15Z), 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/USHM80856141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc91e18983c583d03404ca6c4cf861417b70112dd293a7469fed0883ff5bf5a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USHM80856145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585a5d9565cfd6e608ab8bb6ae5537cd733c2e156bea493b6258f83d906e1dcb. 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/USHM80856147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a184d893fece685dbc9cc264da3649633dadbee8e2b4cd5d299bfbac7917139. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR6V80772207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1d7e2ef549ecd5c5ed53ffcc3730cdfa220ed6302e719857ba68b5a386ad44. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR6V80772212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8f7c7ee857a03e74485611a00fc041c924d2c7ebcb8bf0cc4b3cb1fddc0985. 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/FR6V80776563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3684d79182ef05231022eb03ac5a907c83f3333a1f5f8346a700badcb8ef639f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:28:02Z), 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/FR6V81315434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b5b6241d365cead5e71c21a3c03609692466573de1847c8b74e6af838864f5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:30:17Z), 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/FR6V81315438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba974eb77c17796ecf2c25cca914151ceb640c7b71ce2896a6e631888e2ba5a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:42Z), 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/FR6V82481130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb600a27db80f09fa9dbbd786186ee8a519caed1fa144cc5570439f8bf27e3099. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:21:35Z), 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/FR82S1700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46989d275e76003210988bd7c761614b512f07e4ddb737123e7f5b37efdcf7e9. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:52:39Z), 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/FR82S1900123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c2b0f9e54e31a8d74f9f150647036c0bf864ef776e527637e1aba2e007581e. 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/FR82S2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234a068decf5f8c27782c7f9670ddb134fe417cd2267f6bb598c33d179c1e474. 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/FR82S2200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f24af8f74295f5e28915366cb6902bae2a1928cef66efe2f61462853c2cca03. 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/FR82S2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c13c1802c3fb398ff5e41af48335b4f3095d650c2109c42b59600c1bca916a. 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/FR82S2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234a068decf5f8c27782c7f9670ddb134fe417cd2267f6bb598c33d179c1e474. 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/FR82S2200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614a99fca42139948aea2537974db65ca0e69a449947df58a4cad458d6004aa6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR2X42501658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4655d4225676a4de2abf3a005485c31d1f1aa346fbec5b178d7f7bfcf195b5f. 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/FR2X42416770.