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 0x5df01abbb2ac5ba91f39c427ae9459ec171e4779df8c160554201027a7517ab6. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8fd01469-4db6-4944-9ae2-a9d0a375953e.json and https://artists.proofprofile.net/proofs/artist/8fd01469-4db6-4944-9ae2-a9d0a375953e.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 0x45f5813df700881a033a048f58c90573b3c3ff02beedec2123d87d594092eb7c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/GXHAF2557355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc28fec07265d28226b43233d27844b852b88ec643558aea02655b0b15f5247d. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:01:28Z), 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/GXHAF2557356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7001a432a001b980bc59ff2cc52bd04a04b45e199aa38bc9d7bcf676d0ef56. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:08:27Z), 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/GXHAF2557357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f360c597193d2bca49fc8676edc77b0f4ff8941100e38ca15bb5d53781508c. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:23Z), 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/GXHAF2557358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ef4a5ae39f1f972e0cd6d0e0b26c98bbf9ab63c388baefcc1175bba4d2d786. 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/GXHAF2557359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d3d1d3fbcbe180edb25c0f9343bab05b512a21d3df46c5a5379b2ee444d42e. 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/GXHAF2557351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82239d895aa6264d7cbfe30e7a0a3063a14242834b3a0b3d83ae9f85730e1926. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/GXHAF2557352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51afa942e10c83b7dd6d071dc64f82de39a43e187a9d2d9ef848b313ebbb8aaa. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXHAF2557353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeceed726da1a28962f5e18be2a86467d77f4019b3e54ae2bb59ec82ee5ac1e7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:28:03Z), 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/GXHAF2557354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1fb2f4ff132217d97ce419e3ea63e439d31a2b368f2b6e5d7c2d12a3a59dc3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GXHG92548137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755b5b63eb86bb4359fef6639eecf99fe4cc5e5d30c80d83942fdc0fbdb4f2c5. 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/GXHG92548138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fa8c05f7be55c233447c4cc03c8dbcf6fa26720014dfcd055406b9f2ffc9be. 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/GXHG92548128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ea624f8edec9f722e9263ba3668eb23816bdd06743051192d4366ca8de4414. 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/GXHG92548129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4a2a8539019f32188aecc3fa4581233327d8100ed377a5eddb0801700f4109. 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/GXHG92548130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb295a68788705c4970f7ba8104b6415790e9164098fe9e8668436bad05e729a0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GXHG92548131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2226f907375f212cb1046b141d4d1afb1a73f23a2e52fa444e7dfeb31206affe. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GXHG92548132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd4e1f48787ce3a55f2d8383a737675a549581c05d04ddeb90db78579985100. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GXHG92548133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfeaee9297e8bb7cf41d199c0115012b691254db4bc39d42ff8a734ff694e87. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GXHG92548134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9005b87fd74b2af0914f22b22667393a6d45dea2f386ac085d291b12061d0ba8. 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/GXHG92548135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedc217824a2c5090546eec70112eb5f2b0ed6437b3a44f16805565e52293f5d. 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/GXHG92548136.