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 0x878da3cbb0b42b32c4b715992209ba2da1466ba5d36fc1b2c9d9f9a68e619199. 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/1d5b9781-1a72-4c7e-8f6a-fa1094019aba.json and https://artists.proofprofile.net/proofs/artist/1d5b9781-1a72-4c7e-8f6a-fa1094019aba.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 0x8c4af5afe5d159413f0a8574ea971b6e5115dba22ebed3cb99c9456f09b233ad. 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/GBKQU1497134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c01f0da879f7f33274e1a357958cea13d19021563776310396ee3921ead6fe. 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/GBAWV0002223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbf7c5699e6892fa725b50df77aa4d0cd4e822c591c77e676c5622d6a51bf3a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBAWV9800837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b65db4e85a30c098a8d0d2db5192b49dd6ee13ad77f18861b9481dc087c7e6. 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/GBTYZ0800222.
Betcha Can't Wait - Sunship Remix (Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1927ab7839cc6ca565887091c11792e310ba800ebf3ebe48b5730311cde22bcd. 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/GBVVQ2001117.
Still On Your Side - Artful Dodger Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286a111c20823a4c7faf14699326ac6ce83a9c761a6d5ab70f5ace73b278f344. 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/GBVVQ2001229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83b7edf995173394419a80d14ac6977010bc2e7b0b01c34e967abd560ee3391. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBTYZ0800373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06c9c09b8833b52f006bff6ad9d16f6fe0d8a11b8c9f37cbec1cd7b2b9ab8c7. 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/GBKQU1588962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ecd2fee11d31416c251ed896c4a7ff94798c6e69e47fc286362fd73625cda4. 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/GBKQU1570251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46931f12c4003d2366411067511e5a7ea2fd2d865972dfbbb2cba279848003b5. 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/GBLV61400470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad58e7671f26fc23885cd3eff2e40631bb4f1962ab92117d268a73372849dc3. 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/GBKQU1497130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594560079bf83779dd3b988358210ad0776059581e765e706bc65df66b97a656. 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/GBKQU1497131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbf7c5699e6892fa725b50df77aa4d0cd4e822c591c77e676c5622d6a51bf3a. 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/GBAWV9800837.
Make The World Go Round - Ramsey & Fen Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd6470a4d8b32ef999312864e54891f499f5e8d299225f4eeb065d3ec616b64. 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/GBBXG0720092.
Make The World Go Round - Knuckleheadz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaf52795c7fc79dc3bcd7b81f696ebdf41ba31d29e02a2e8a36ced75fbd7ba8. 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/GBBXG0720127.
Make The World Go Round - Tony De Vit Sundissential Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e5eacf803d0523c48cfd1d829a168a7cacaf36a2d4a1584f8ef8024de7b11f. 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/GBBXG0720133.