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 0xa1f095319cb59a191b024f7e184a8ed5853eabf4091781aa4052542dd4a92bbf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac97fcc7-45d6-4a2b-b773-7e36cfd638ec.json and https://artists.proofprofile.net/proofs/artist/ac97fcc7-45d6-4a2b-b773-7e36cfd638ec.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 0xf8605896ea4eac5ca73d9b5880c156dc8bad32b4c27e3b4904330b103121b5dd. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:45:15Z), 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/US83Z2335612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c09145b36725d24f693b6196a374f63acbd6e09b91cc616af7aaf70290925e. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:32:37Z), 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/US83Z2343872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ad57ccf952b2d21ee235dc4f52b98e464807d0d12b76cc620166ecf2897a56. 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/US83Z2458280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4a7e6a37da1b09b52cdffa6e2b794943cc8ca89f1566584fa7f15b04366c56. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:51Z), 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/US83Z2463822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5032f27fe7b8d6f5e3150a8b58b8c130c34b594676202fc23d31bcb6c76d8e. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/US83Z2465480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa212566b462ebe9c98c92dc4598610a83ab3dd0614b0797e38826952fa170420. 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/US83Z2470139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0311d4c94cdf3ea645ef86b655ffeb5d020832d65fb725b29388391cd56a90fd. 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/US83Z2470160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1273eaef051112c72ae38f15f77220ec00c015771cae28d5b57401e67c1d2f7f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/US83Z2477409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e08916eb7b1b1ced1cfff2101b01f4cbb66f1df38f83586f419fe7cbafa6968. 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/US83Z2483096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf690987e13589d12fc4198fb6fd087758a707083f4e354a3f8d0acc5fe1cdc83. 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/US83Z2485512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f393165552aef55228053f3a330c79bbbbbb253cff8578d309939123737cf85. 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/US83Z2487852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a72f6040099f7695625c775939e4ea2b40daa74178b5d054ba5b41e802cafb1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:57:39Z), 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/US83Z2492263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8104dc89e622b5f6f6eed90b40c61a9c296b0fb8a58a11ab3437d890dd7a80d2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US83Z2492568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5129b9097ac9251f1322ab8d75caeb286bb65d4e7d97c45bcd28000fd648d269. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US83Z2496698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d5e0b9f21c53272deaa0e50ef680356b7c1c245c8ea7bd478d6981fc1b051d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US83Z2419285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a04198e20ed8e3c3148de2c0962294581a13f961a7e3cf34e7fd9c910d005b3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US83Z2420546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe25f1699f40673e8aa9d461f2204e561ef4e9325e062b298405930c611daca2. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/US83Z2422705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52af0a735e3057ee28c5d1c556aa8364565ff119c0e0768a3fcb00d9b61a3f0. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:37:58Z), 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/US83Z2500357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a276637ca06910d6f349607a9b0aed8204c415cc4e096d35ce8944d0dc9509. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US83Z2501257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb80121af533486ea5fd7559c2bb1734ff8a4d0c8a062a8f366ed18c4d476905. 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/US83Z2503964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab08b92839b90a15244131893a46b67b2b4508e28d5b249a7ca3649230a220ba. 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/US83Z2504168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4807a256d4144ef3d1edc07f8d513aa9d8770c2c7416db4c0b80fe4d0de40ae. 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/US83Z2505712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2614db483af25bb5118a6277da78b0ea66087145fc71f7cb199036156056c69b. 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/US83Z2505964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3132fced31d39ba5630a45114d71c92fc240ed78a343d8e414241dfc17d7ba4. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:48:18Z), 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/US83Z2506361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b51aded7c22624dac132e43dc43e65f473ee850d9a31f12fc1a07b2536e13d. 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/US83Z2510092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81cea8495026fe08c924bbba40fd4f31e8ea0e095933b409bc61b162d918819. 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/US83Z2511719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19560ba0fa241c6db4f3478f87fb6d68291b415f3bc24f4ed651154b61fd830e. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/US83Z2512173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc2676b08b25a6c6189c969612839eb10309294077181f22143d09cee93a270. 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/US83Z2512816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ac1997f926128c902c7cac57a3066d72030747edf48eef4a0dccba8a85d217. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US83Z2517228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8669db1d73d758c8efdb5b8cce19c5b148991ec314486d8e16138da5e243b41. 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/US83Z2529365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8115a60b3975b99be096409a731f44a345118722bcc0216b7a7a6f9079d425. 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/US83Z2543140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8235ae2f80bfbdeb765b2c457d341889ca829140620d13e31755e9a367d1b718. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:34:32Z), 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/US83Z2555663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0830b2192b45aab51cffd5fafccc8a7e1b04ceba05315ce27d65b38251899b9b. 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/US83Z2556072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb083b65512f43045283e0fb9438d80b12aa2b0817347480dd42880b90f14cb7. 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/US83Z2557729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec2f5b38f13d445668367c687581bf814daeec8369b9cf3a268759ef06a64c8. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/US83Z2557963.