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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878da3cbb0b42b32c4b715992209ba2da1466ba5d36fc1b2c9d9f9a68e619199. 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/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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
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 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/GBAWV9800837.
Sleeping With Victor - Marvel & Eli's Southside Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bd6492c7af6bcd84c3ffa31ef9a1f8324684cf11f5f88df00188044f5c5c15. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBAYE0000238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b65db4e85a30c098a8d0d2db5192b49dd6ee13ad77f18861b9481dc087c7e6. 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/GBTYZ0800222.
Betcha Can't Wait - Sunship Remix (Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1927ab7839cc6ca565887091c11792e310ba800ebf3ebe48b5730311cde22bcd. 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/GBVVQ2001117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6012fdf27b2cd9fb03931e861cf8e08676bae78279f4a7ea2cdd30ad01a5e9db. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBCVW0000011.
Still On Your Side - Artful Dodger Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286a111c20823a4c7faf14699326ac6ce83a9c761a6d5ab70f5ace73b278f344. 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/GBVVQ2001229.
Bring It Back to Love - Dem 2's Rubba Soul Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b984bd17ffb08bd1c728bf493d6280128d942dadd4314d5724bd8b2fa51a7e2. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBVVQ1400608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1346293c38170fa8a4c41cac78d9e7e8d62cbe1c0c4c1d91ed60e17e022919. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBBRL0080010.
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 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/GBKQU1570251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8f7cbacc80a90f3c341150748692aff7dfd7970c918502642b6bd7779caeb6. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBKQU1526704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98ebd922b0931fd0a92226d97d4aad05b95b7f85a5dba328eb45a59e8c17bed. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBKQU1487528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb60ec07499f0f572da02f53bdafdfb3dd4b2cdf4cc232ac4cfdb0558c5d87ac. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBKQU1487529.
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 0xb3a899743d69fa0c9b7feb593704c2ccd322285fa72918d52b1dfd72535850fe. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBKQU1497133.
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 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/GBAWV9800837.
Make The World Go Round - Ramsey & Fen Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd6470a4d8b32ef999312864e54891f499f5e8d299225f4eeb065d3ec616b64. 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/GBBXG0720092.
Make The World Go Round - Knuckleheadz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaf52795c7fc79dc3bcd7b81f696ebdf41ba31d29e02a2e8a36ced75fbd7ba8. 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/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 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/GBBXG0720133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67b6a39e2fb8918d9338184f818cf962da77af44350cdcec5c00d81e7b37701. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBVVQ1400620.