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 0x6792191033f7ff11c4310d34c4797f2071dbff2fbfa55670703d837420f43fa1. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9447656f-007a-40c1-a2c2-56acbdfeb415.json and https://artists.proofprofile.net/proofs/artist/9447656f-007a-40c1-a2c2-56acbdfeb415.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 0x7187217319f6e3afb6b3bfe96a825cd3703d539fd4c1ee20224d8995e25dcb44. 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/US7VG1476685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a09328fb17ac7d70f31b4fb0d8b016c6ada9411b7b933b07d4d4cdb99fc3e2. 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/US7VG1476686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af4e4eefe2abf7d4d9b78d06672b9a7ca907923b8241adf7ece86036af08d80. 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/US7VG1476687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c0cc084d0f6f09e1bcd166dc39e35a519bf2b9fa075fbc3fd7a96642119c3a. 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/US7VG1476688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa112ab26e79196f6daab8646b9bd67790fe046fa5cb9484262565909754807. 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/US7VG1476689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b002a75de434d34f2c120bb65716fe862e5607b125a6db00eefe547cc918ca. 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/US7VG1476690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c30a3f48a68c66e02c86cb7ebca2da176df9b3f8882831857a313f88ee1ce2. 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/US7VG1476691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214fc395727c31d2852e524ff24233f6ce25de5f7a2af1a7ccb62805808fa95e. 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/US7VG1476692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bd36b625171acf4adfad029da74a36384b3872e1a745bf5b659ea51fdbb907. 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/US7VG1476693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef9ffee0393e299958c22d5195f093b54bd0680f51dae227f3c9d4c7e9becb4. 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/US7VG1476694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a78c151179258f319417b90ddcba590ad6730b829c3c377c48a5c34308e0b7. 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/US7VG1476695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab84fab44d1b3dc3d20f509aab14f0ddb007d6359115988a57bdd6e03652e2b. 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/US7VG1476696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57c5bcff7eee593ccb0ed8daf0bb0e33c27925a0ed75c109b8b7cbf0bcc0436. 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/US7VG1476697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4403216962b9654441c11f5bc249915e88fcc42f0757ad4ce4bee8e4b8c8d2fb. 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/US7VG1476698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d9b733c567631d8ea00070b7d11f9c9ce9027411c6710faffcb99ba3d10174. 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/US7VG1476699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97013f082641b3133d0b7bf79a928e57546135e421a1af656b11b3d7d4401136. 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/US7VG1476700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fb01b99882bfdb12c786dcfd7aac5df69311c66c5e1d65754ce5c3911a5a0f. 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/US7VG1476701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551ffe56ac1e6502763371b264416606935dd0aa48cb9acddfe1d71d907ae538. 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/US7VG1476702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f4d153de30015a2eda71d48fe01c7beba20184f032d668cc9e7aa045cdaf92. 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/US7VG1476703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e510bd8f0693c4791f8c548a33798ac3515cf9d701262aae38b0bb52145cb4. 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/BXIP51700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8031f929edb47402cdff38f22741bc5fd82f16c9b629630b571d43c08165f5bf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US7VG1728193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631dde153e4325694ca41a71541fc0a660f1516b6f57f93ab9809b850231fbd3. 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/US7VG1728194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b7b06f298d6741a52c8ef651142b6018e2aa4b87fa939770926155aeb33770. 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/US7VG1728195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814ab349af3a93bd8e52006bce1f9ee3d1f6406d289e8572c586e1d6a9bb7da7. 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/US7VG1728196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf424705fb15c8adb59f5aebcdf49bc791e9c12f33df06897273f0a4f40307f5d. 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/US7VG1728197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3d4ac9acd49709cc02a05f474f39acaa7577d85114d82e8cee3d8b0cdd3d54. 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/US7VG1728198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdb7b7926df9e76f3dcd775aa5fd81da82362ed15937c431ab8f9a73835216a. 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/US7VG1728199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe650aa05e7144f09618593b167d2cfc30167ed1fb9b2ef5787a006e1c9f28a03. 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/US7VG1728200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe823a594be4330911214b52c922daa33b95e7564beea9b83df40ec787b0ebe50. 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/US7VG1728201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69430dc122802e927ed044878f966a6030dc04616c1a436edb00942a510af8e3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZ5AB1775551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de842dbcb83a1fd2330fc33f053e2db718b7fe93db313ae035c60454b11153e. 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/QZ5AB1775552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1589c0dbb9008411766b954ec2fdee7b5aa26841ebc4fd0b9a03b4b97fd31e. 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/QZ5AB1775553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fe68ee6748b33978dff4b576a5932616dc45b32b6a50a841ddfc3d9de44151. 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/QZ5AB1775554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f833d605cc7f18833bc78989ae6688319465e4cf581f34f8ed4d99625a8e9f. 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/QZ5AB1775559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e92c1394071b7f87d3965a6eb26066cf0c02c34c8be1437398b4646a9b02a21. 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/US7VG1690999.