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 0xca8559fbb2699e1e3e5bde49eedcfdacceda0ce3f4d1699027558f5ffb6a8dac. 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/7e7346dc-1ef6-4173-9a46-e2be321f4929.json and https://artists.proofprofile.net/proofs/artist/7e7346dc-1ef6-4173-9a46-e2be321f4929.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 0xcc4deb507fb7da051f568c963e7ab7ed2ed83315dcebf9c1f2d76c8c23a4aa2a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZMER2299004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf8cb4524d6338018bd39b8627c39c09d559afa5b2288cdc5f615b2c4bc51bc. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZMER2299005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d92fe4f60e47c735eab6a83e0a7a2ea3614109e9801f461d2533368adda1101. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZMER2299006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217d070bdfb87229781b101e10a085b5ecc33324c6c448c63b9214995e496f46. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZMER2299007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85a049477252529146742ee06908154104a160f9d2550286c337e5b346f1f89. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:48:55Z), 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/QZMER2299008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a48e92f68a0597acd6a7739873b9499ba97a7cd5d6cd0a5aaefb03fb16c757. 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/QZMER2299009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0c96da4ebe08aebe051a9e4d6eb54815f6a9b4bcdf1516f0394f86bb8dad4f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMER2299010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3040f882dce5c26ec08a4ceffb879fb32c8a92e18af55bec7668149d39a946ce. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:13:27Z), 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/QZMER2299011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbccaca1c4bd4181808115915ee7675c08ee80d0c28c014bda4d6e290e0de6e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMER2299012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b95a1eb045768f8497ab2b01d1e1cbe05943579dbb93c3f15bda38f4166ecd. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZMER2299013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118492b66a978a6845657ce7c52d6012b31656243d8e43cd34ca58633964f65c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMER2299014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd0bc9c5d000aeb628d4c575f12feebccc1027ebba559d1a0c0bcfbb77f22ab. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZMER2299015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6a17f31e21a580919651268be6f5bb8bd0c8ea4bb3a1073de062ba517d05eb. 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/QZMER2299016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f87bd7f5c13a9027337559563221fa88c7714d540524daa18c04503a58b14fa. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZMER2299017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335332fe4dafc3933d9b97c981dde52e2f106cec1355cd013b94f9eff08ab10d. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZMER2299018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb884fae87e578adc1536ef058cf664368565f53c63744fa131343f08ee413361. 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/QZMER2299019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7974af5f37e4b46b3cedc319a13998ee642534f331cc52fef9d67e3bfc74d2c8. 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/QZMER2299020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47c9f14501e99fcb78b35b34be4b5f329733b6d166b4bc4dcb921f9341b3efe. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZMER2299021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd5c47b547b36114e7812b1ced4f746fc1eafca620a5e92d42fd8f6b58964e7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZMER2299022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc512aa36539746e1d62907427813f6c423528bc42d7b349cddc67f92070bf45a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZMER2299023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1823acf28d362960ac5891d0a09a803c62cf9fb073a05b92abf72a059ccba3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMER2299024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a43bc3656629d98a8c4915391727bfb88aa1c873e56d78b6a07cb37fd266bb. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZMER2299025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e930dfc3748efe16efa5e5b0843a186311d9ca02ae109fc8c348f3d7e6b9ada. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZMER2299026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f4e9f400c4a519da772c5a5cb7b052a0a56c43b594b144f216be46488ae606. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMER2299027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ba6132bc1db175b09d1f1767d29f9037a2e07b4c6342f4a586016ed37c58ab. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZMER2299028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa583105d6e6c5c29c2a0fc5c2115f4731bc77c4bfafe77cdec0ef191222863aa. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:31:46Z), 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/QZMER2299029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606059de61a978b3f74533bc27d2521f98e518c89a95e2cfe96cfacc03d65ec5. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:47Z), 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/QZMER2299030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14427c870005db90c8aebcb9d9f9071f798104fc9bca1c55265c22245c736a9. 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/QZMER2299031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f69663cb21fba36b24f371c5242e6858f8bebe87058aca143df98ee6b1f12e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMER2299032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6591413d60273a8045fbaea55b1453fc09a18b7ef21e6966752e0d80a0a783. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZMER2299033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1c8bde296982324f12acdcc93e398d9b40a501f1a5c4c119e20b6887268aae. 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/NL8RL2426578.