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 0xc8ddc5ef7797377788fd5768480c2a47639baa14713e92818814f88bb4e24ade. 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/26e5836a-7503-41e5-8eaa-fad5792aba85.json and https://artists.proofprofile.net/proofs/artist/26e5836a-7503-41e5-8eaa-fad5792aba85.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 0x223f8a7222c0afa6c962f99cf27252ee5f248ceec7019a49ada8004ff0205d6f. 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/CAOTV2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a127b5b70a7ae5f5838c3ddb78d006fdc4edeb6c53bdad660a8e8a4794a87ed. 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/CAOTV2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa6d4ee0c7bf4d2305cce5b45d042200f0ff1b88c070d8cc2b689d4831494be. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CAOTV2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc792b853bf3c7669a3d32526fd70d6325db4e83be95d21e2b18522dd5a16207. 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/CAOTV2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f30cd0252684fdf0caebf7bdf0ebc9e65ff7dabb6aea7d9dc2615f78da1583. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAOTV2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc202dad1d7bc8f352fe348c74423b01277cdc69a4617f381e776c8c7beacd512. 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/CAOTV2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e70e0afc8aca99ab534bd88feb37fe330b067ae0b82ea4e43d2f2635a58350d. 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/CAOTV2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee96b5da44de4ea4c340a591d394528f271bc26dfccb5187ce48f1ec19842ea. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAOTV2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75735f229855ff41880fea4a21648fa8a5c42c1119200113ee735835fa402ab5. 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/CAOTV2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d3e50c8021d03f813872437bd048f57853569a374b4dfa79395d6942bb22c4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CAOTV2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975f414ac98fa8cc34f4a729bcebf3799a0018af1bdf4936debce77d9ec05e0b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAOTV2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d67cb310ac4d0af413802d8895255a2b56972e1edba7b1fd34abd3e6d21606d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CAOTV2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580186d5599503445d10986f8a4997b2070a0ff7d15241933bcba6d7d4e8ce6e. 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/CAOTV2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fadbb2441a7809e4688b2470d1270f06e9bf400918989bbb63d1682f2206b8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAOTV2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc422b239afeb7074c59b4e9c0c92fe6ca002f7aeda3b00cf878d61c4a119f482. 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/CAOTV2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91adbd8c2e9de2e785f1600858a22103eea1ffd87b164e0da81a49e31cbeeaf. 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/CAOTV2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee96b5da44de4ea4c340a591d394528f271bc26dfccb5187ce48f1ec19842ea. 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/CAOTV2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f30cd0252684fdf0caebf7bdf0ebc9e65ff7dabb6aea7d9dc2615f78da1583. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CAOTV2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a127b5b70a7ae5f5838c3ddb78d006fdc4edeb6c53bdad660a8e8a4794a87ed. 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/CAOTV2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc792b853bf3c7669a3d32526fd70d6325db4e83be95d21e2b18522dd5a16207. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/CAOTV2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc202dad1d7bc8f352fe348c74423b01277cdc69a4617f381e776c8c7beacd512. 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/CAOTV2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa6d4ee0c7bf4d2305cce5b45d042200f0ff1b88c070d8cc2b689d4831494be. 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/CAOTV2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0281c0cb4c1f630f83cd218e5d5517ab8f4a5b3bb318a28184393f8ff047438e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CAOTV2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d3e50c8021d03f813872437bd048f57853569a374b4dfa79395d6942bb22c4. 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/CAOTV2000001.