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 0x5e508561b3a7684c081ee6fe50c725d8b8a3fb4b6cf14ca95139999e85ac1b1f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/511f9a74-22be-4a67-8bcc-81725d256ed7.json and https://artists.proofprofile.net/proofs/artist/511f9a74-22be-4a67-8bcc-81725d256ed7.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 0x305a650213900cdb34b2791e6041ceae43cca7fa12d845289c0bb741352fa035. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAES2007997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6071b5b6392ed03fa176eaab46409391b755c00927d726d1f22aa197311946b7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEG932301887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f56e1ea68c876fd4f553af5911c4d945155c9e8cab3fa1b01dc187c4f0ba0a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEG932304132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f5c1a035b015d1cd116065d65f0fa4349dbb0bfbf0fbddaff52445be04ef20. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/TCAEQ2051887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f176cd83b2819e80809edcbe84578cf5249699dbcf0a1a6b3de5fa9d5324e4c. 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/DEG932304136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922141464293c07d143eddd78e2b7a0971a208b9ea8cc992ce9859bee2af9c9f. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DEG932304137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14748151d4b216068ac028adb5845d705b587d6ed3f3b329d5eaeccb0c758130. 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/DEG932304139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fd3293992a283c221b0abbcb0044319b0f98dc1181ec1e2139dd93540062a6. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/DEG932304141.
summertime - live at Montreux Jazz Festival - bonus track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8890053fe07e9e19f772c966c53d59aeb50a3ddfccb5dabb06a855535789342. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEG932304142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30afc9dd91f86c3db9c080882658802de7c4e31fcfc813d54704a28d8cc1caa5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEG932500933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155b46ee69e5106dcd45ec6cb30d75d9a69168d13ac733b3464d0c822ee5ed48. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEG932404416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83de3ad1bb8322b54e71d52285178ebbc73516edeaad55ff0b5b954b88177452. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEG932405911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edce350f255a11bc3d13d32a615e27990eeca7603a088809f81938ca671a76d. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/DEG932500937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dc9c60ea15eb9b681348dc875b29db619b499acfb57cd716f989cf97458715. 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/DEG932500936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf171e78e40301a052f3a889e87d2d36f496660337b2b810e4aca0be8394f2612. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DEG932500934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda4096b1e1cb5d9b7536a30fa3263e64d39b0933c77950e8a3574fbf5c27a6a. 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/DEGC62002356.