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 0xbedc00271f1ef4a26b809c0f5cfb1aa5502381e628c2730f6e0d925133e658e7. 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/4542c7a3-1a59-4e2e-a940-91431b855023.json and https://artists.proofprofile.net/proofs/artist/4542c7a3-1a59-4e2e-a940-91431b855023.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 0xaa1f46e0a68547223c476355fb6feaa5f3e0722ee4c63acea4afaa831af9f13c. 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/CH6542096542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d4b8964af36383768849451357ef6ec701f20decfa79d5211857efe105aaf6. 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/RUB422100901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc078209b402325fb11a73be6fbaeb4f44e22f3bee3f199651d18510a69294b5a. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/CH6542138027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5910ef20fa5ddd5dee98fe61232eac16fc8f9d0355965dfa711a87b76ec53a23. 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/CH6542147567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebe7d2277981c6762e694304d7972802eff4fc3c15aa9f5d8faf4fdd0c4759e. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/RUB422101831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91920364d34f51d5227dbc450d1ca8a84a09aecb1cf9243eb63fa80e2931d716. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/CH6542164084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c650202ccc3c8bb35b44f402df15ee3f168747100754a450b6fc5b294999c4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CH6542168721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699c3c2421e2dcab1ee0d582e513b84ae33e1ae18a5dda2a6cffe601371c26b0. 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/CH6542182800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2915b9e124d03686d01f6451c563ff88c8abfa67316144da9b55faee08188a2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CH6542184077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0797d8fdba5da95874c7d238631602a86b59f55bb1b961d8953126ae285a35. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CH6542258750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e765ff949858a5e460ea675bacfc3e5d4e9aaacb150b8aab84a36ca572fefb1. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:48:48Z), 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/CH6542288189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa6366109300b2ae50e72712c4a7d6f9318227fb994b9686891bafc3b5952a8. 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/CH6542322029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d518ac2052525e2af6ae0491b6dc930e2391717ea6438d1dd42cfcec15fe13. 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/CH6542326968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee1a07b534891696dd99921c57e69de59a39f878c42cc39bf16091c878ea03b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/CH6542327265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea953ee342bf07f55947e16ab50fef7fb46786690b6c763a5b7e86104b956996. 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/CH6542331817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eee1de94b344014b64f0c9b510e15c5e05daeb9b0c4df28316b5172588cd9a1. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/CH6542333167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87b2cf76129b4fc60fbcd0f419f9b671d0410e44c4e6ad9bf1cce1e53279e3c. 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/CH6542342805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f8d2fa3a191709e387bc958ffd457518f797e6b927041071837626fe892bb8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/CH6542361465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67867d50ce1540758e2fd5ec77d830c6fa19251d8748d520646c7c677f601eec. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/CH6542364823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bb37982a294a16f27fbc4b3d7a821ca14e446b70e1d8bd5625ddef08b7b30f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/CH6542558930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaa29c8ec77e30678fd79096ede500f8b9575c2f3ee55c61be81882d37bf345. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CH6542561340.