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 0x2c800239e90509d2d76aab088ed88f2339f5975559b01dacc1c5dd0e3a416c9b. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ef62462-8164-454a-8101-7a811114fdf9.json and https://artists.proofprofile.net/proofs/artist/3ef62462-8164-454a-8101-7a811114fdf9.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 0xe0161ca545cbb8f57868281918e657725a7909b0ca9a59ef92e948c7fcade0b2. 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/BXIV82226355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fbe89c7db651aaac03a5fd35b08bdbda00f93da1f5e68740de31564de13d7d. 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/BXIV82243462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f603ef889e7b31dad6c1b30b41f9fe712820cbdba44ea826ce75a1d3c206b38. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BXIV82377173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38724bb434f990e7a1f539979659ce0b524947cb7a6bb4f2eb8299b882b7c294. 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/BXIV82358213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a60ac6c05744bf2103b61034d01e4fea8b1de038d50299df21f2c8e9571824. 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/BXIV82323655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabc6cd476603dd0b0544440af19b4915bea1bf3a493e20872b9d8e66498daba. 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/BXIV82364338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468a05edee7d982652dd94e8c1478da33cace9937b0fab9ed5a6634c5ab819cf. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BXIV82361398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0069d52f76c7d76a50c2b966f94d80e3b6b2aa4772fb105d1b0307708f8b9c3b. 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/BXIV82353235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee30b44adcc9f848347cd896d2323cc67de8766eed84645aff3d2c9ee18e3bf. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:51:39Z), 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/BXIV82318511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cc3df3db937b050642cc7b7f47acc8d5484f5e8e55efc017c432a01f766372. 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/BXIV82345167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99f9617b80dd359642f0a957f48bf7c7726e184a2b17d05683c1551061cf908. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BXIV82362929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabc6cd476603dd0b0544440af19b4915bea1bf3a493e20872b9d8e66498daba. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:09:14Z), 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/BXIV82364338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dc8021100a0c61e964ffcec75577ce6c09d055f94a565e8e8da88d62fe16fc. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BXIV82389457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468a05edee7d982652dd94e8c1478da33cace9937b0fab9ed5a6634c5ab819cf. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:34:46Z), 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/BXIV82361398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f90ed8abf96bc5f214ac45f2b94bf72cdcc36396f49067ad554aa63f922051. 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/BXIV82385383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0069d52f76c7d76a50c2b966f94d80e3b6b2aa4772fb105d1b0307708f8b9c3b. 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/BXIV82353235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee30b44adcc9f848347cd896d2323cc67de8766eed84645aff3d2c9ee18e3bf. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:08:55Z), 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/BXIV82318511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cc3df3db937b050642cc7b7f47acc8d5484f5e8e55efc017c432a01f766372. 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/BXIV82345167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99f9617b80dd359642f0a957f48bf7c7726e184a2b17d05683c1551061cf908. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/BXIV82362929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e5d9f5be04f2cd31a0d86d92f602033def60f147b17d9d673f623e9dc62613. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:37:28Z), 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/BC6M22402085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2702202d90c091d5f600d79c758193a64187ce9a8fc7bfc0ff94b64a087f1b3e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:53:05Z), 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/ESA012567371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5dc14b1d411fb6b95730aa47f5c7cc710da80ba2f8d630c3170532ccd244e0b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:20:29Z), 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/ESA012567372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1de77dad4f74af8dc5ba576077b4e9ec73199a30fc2ca3491525a3cfbc5821. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:48:12Z), 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/ESA012567373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacfe48a00da349548b139cd3e5b99ea0f16578dabbeb535a3e825c4b9d41a64. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/ESA012567374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdceb185ce05e8ebd355d796737951d25cb1da9898769588c25dbd9f59442bcc0. 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/ESA012567375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf318c89e31689544b4e1cbf8c955973dc3d7a98e927c5672c8f6ea8efcbfacb9. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:34:42Z), 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/ESA012567377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5490761f0eb4dc1869703bec618f9c8446c6980209117b23bf384ff78b0530a8. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:39:32Z), 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/ESA012567378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49eb32d1707a8d319720f341a8e73d13e4ad2361c4d11141575dab752a235f5e. 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/ESA012567379.