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 0xebca4869dfeb8f7d1923dd84904bf87524b4b7d6075063843d785fa8328be690. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60836f94-4252-4f24-9f69-bbf0198bc629.json and https://artists.proofprofile.net/proofs/artist/60836f94-4252-4f24-9f69-bbf0198bc629.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 0xa0237c7b547317df64a615e201b5fc41ed8433741fb04f5b4fc5c3c2d3c41d24. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR96X2447587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7e0ed742953a2f7a98b1ba1b30fdf2d54cf10a3e36f2ec7de7cfaa9fdd4ec6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR96X2446745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef22366f62c66610c10c5e9919ed6e8c2e5a859936237da7eb192866af97e4ab. 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/FR10S2400441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba57089992fbc58d74e8da118262e41ab86d1fc27855f3c23d4fe0f28a64329. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR10S2400398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5638fd742d12866713c1322e8b9a50b9f2879a2936cb8fce04c2d3d6980e5c5e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA0R2346895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fedd5cc9b4f05cddf20bf5ee0200f3c30ded6bdf7be5f374210aeee14dcec6. 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/DGA0R2346887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3100a363a39f0cad59a34c2fa4d4011258710aed1340a6ecdc06b5f64f28c031. 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/FR10S2400439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c32b9e18cc6d1b5720b1689438e0a0f392cbc22d7e42a29976d0efcfa6248f. 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/DGA0R2343099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ce52bfb39838c04f08cb43841c8411ebac4bca9c9e1e3895644b04f45a595c. 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/DGA0R2343084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf92d11e20b3b348a32516ceeaf7d16c9d00ba00233d8113d24d43989f788e5c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0L2370401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc5e06eace6c5de18fc1ffdfecf0e9234017c785674b4f5914553b407bf155a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0L2368973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22f7eb60d1325b933ed3477cf9ae916888000d8df772134e52c2f4fbef544e6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DGA092327302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b87e0a4e2a7c4e4894ca27cdae6a41e3316bf66d38bd680befa2fb06fdc30a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX202302060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cc26360861936873fe7af3690e425c646a6827725ea9e5bf51ba4dc9285b6a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKG732244696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc25a81f0d0d6b45d9508528bc2da77a31c9d75cd96a6eb6133791d11546b3af. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0L2378802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02a45a9235c55204d1d8a75de15ce7c0775c8c30d52ae2b7d7e3dc3ae183aab. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKG731776110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071b2e400949c078d6028c049298694cae6cc0623ba8cdfd93be3e0cc5dd90ed. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKG731894253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cca450fd79069b0d26dff664b66fab516c16c0dfc9b1aff3446c71b9901c4b1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKG732149313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0f13749b6c87f1e93f76117087a61f8cb9f10498d1da5fb25f9222ad16d9a9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732149419.