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 0x3f373da620130e594d920e3a3aaf4010b42788f7bb2329b29b602559e5c7c5f9. 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/511f621f-3fc6-47d0-9144-f78f44def2dd.json and https://artists.proofprofile.net/proofs/artist/511f621f-3fc6-47d0-9144-f78f44def2dd.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 0xd12292989bfa79d1ca39f542310039e3d3463bd0bb426735c50bba2d9beecf0c. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:19:15Z), 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/USCEJ1700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b10e3d83a4edf6107b8a8d7fb373f67edb1aaca1a458ea5b759bbd6cc048f6b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:53:30Z), 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/USCEJ1700302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235c21b61358612148f476c2172aa58abb56a6212f0d55bd3b4b3c556bd0627b. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USCEJ1700603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7427723100609058f638c6d28b55e463073a3a9e0c43124824ac5ea25354e08. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USCEJ1700604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64ad12785adc7ce9a54a042a08bd5184f4045f7144a992c7f178fef25103ebc. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USCEJ1700606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf832840920ac24d8091f0cfccd0b45c94cecf989bb879db657fc4584319389af. 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/USCEJ1701102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6502717e7017017f283acf3e797d833be21820902c21033a637f4cd17c957ed4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USCEJ1701103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762f53d498ca4f836533db8ba1f84c0217b2e2eee8060ec3ccba5e3c3a7676d7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:48:01Z), 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/USCEJ1701106.
Angels We Have Heard on High (Acoustic Guitar)
Do You Hear What I Hear? (Acoustic Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08666f121ec42abb864e0f0af3c250bbdce36ca358555051ff5dcb4e637195f4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USCEJ1800203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf2eade39c473e206cd8709a308357d2183f794106664f453411cb489243f7a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:44Z), 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/USCEJ1800205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89003dca8f312cb160c1fa465c54350f1c3011752f1958f458eb115997bb5ad. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USCEJ1800206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb01006357d2bc45ad5542153272974a9c057edf562b5f512449c8e330215c7. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USCEJ1800207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb814f34630a95e42a2b6fc9eb6a0a36a85e72259f4982ea4eb6a4fccf110c9f7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USCEJ1802904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33ccd34fcb69b4a5bbbf8734b1aa42eab5f479a1b9c044ab8dc37826b80e552. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:56:04Z), 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/QZHN81959406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59caf3ca6f31cfa406bacba26d49f389ee11aa47e9eaae49b5f18910b45606fc. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:56:38Z), 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/QZHN81959407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b38ad76e9c8a760a7946b3659895a84e01ca7522d8da0b36f1bd7b4a8714e65. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:02:05Z), 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/QZHN32199701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70069c8e2d49a799fa3845aab42477a7e1cca5a65c97282efab06f7431274f83. 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/QZHN32199703.
Michael Row Your Boat Ashore - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540d69dbbad8dadc5b166ccde8f1f6b6eeb0f0eba11c28c114c8d0d95e040b9c. 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/QZDA62045884.