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 0xefa5501c8a4b645713c2a9ceadea23794633a94952102c90ba02c4728482af74. 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/62d2f948-3284-456a-9ade-78e937bb97c3.json and https://artists.proofprofile.net/proofs/artist/62d2f948-3284-456a-9ade-78e937bb97c3.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 0x446b7f4bd3a226c87dc39c5dd0c39fe7df545a47fda6b461ebd7a486a9e247dc. 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/AUBEC1835427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797828b126fbc36a896c0cd61ca375bfaf9eb982b8f687d1672cf3272ba8865f. 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/FRX202221786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116403df2e827f2b73ae5d7491e890d90e7eb69900b505233677904074f04337. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FRX202221791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e66b6974ac948027749de550900dd99923f91ca5816f0361b7c8f15688c1ac. 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/QMDA72258882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefebae9d9916fb2013048d86ec428ffe9a565cbdba8cefed85f999903fc834d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMDA72258875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936bba594ead9505450f737b74aa39f6e372fe343e6e5c3f8fec78abc2ffe82e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:02Z), 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/QM6N22594448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82b7495909a05b39d65c34fec4635a4d7322a69d6a4e344f2035f8b1fc7fcc0. 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/QMDA72258861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda306c1890361dca1a1f894ce953dc6e2589fdbec522fade7864e05e21098d32. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM6N22594468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832485a892d6d02ec93aa996608934998140c23a44c202d3ffb0a0cbfba78f60. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QM6N22597838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f90bc5ef9c63ae4ee587c15ce515444b803b44329221696b7bc3727f366f8df. 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/QM6N22597842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fdf320bdf7d91f02e1d20581b60b6d6125648302c1091692fafd4c50241842. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX202221783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa608a0ecde5e5f16d7012340673a6cb62205ab5629b9b67b801f78c8d24127f. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/FRX202221802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea420aa8965e701486446a5b54bec8eed4e320f6a12ae9c29e8a3d0b7f6178bb. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FRX202221798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdeb7c4cf2ab4ab487e6166061c9a52bee5de7d80c4428f408ab1f4f3b3f5732. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6P42209625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889f95965f84b1b68b0a36f05b8ff54d25c8032082436d22e13dd386bff25e44. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:04:11Z), 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/QM6N22598035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc19e0424964ae1a978cf9ee283610d785cec12c87fdd1ea9b9dce8f519230ba. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QMBZ92274064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ad4069b9443c8ec1164bed2876a4dc6e26396b1d5abf8084e186fb8a17e726. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6N22598142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9989d0a6a2bee3ea664dac774d9dfb98271b0344266185e7c2ba820aa66150da. 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/FR96X2312599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8add6d89d06c9e717fef6e0da298795f23cbbee24525dbc27b00ab85316fd5. 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/QM6N22598158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322b1b1a3643f383dcf7c35564bdc6e3f8698953b25e6ecc97b4b7de239b2328. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QM6N22598166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3a490aea0ce69bcd2f28e4ce426b8b7eb55bc55cf6f06dc2d267285e6356e7. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:51:30Z), 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/QM6N22598171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12305a3a0f8efc67513775e3c38cd6ae9dc91310017db75a23f10004bdaa06f2. 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/QZNJX2414460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbad298813c55ea84bf61ed167c469d1ae4fcc5bb59ce352460d48aa26064dd. 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/QM6N22598175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d2843a51d1c6fe4b575abddbe75674edc0c32d9864a0ab66f5d0a826aa5474. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QM6N22598181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc164c00d4f6c5cfe5ae6c801ecb42252869bc334f1f9be5b3e113718e11f76d1. 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/FR59R2522857.