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 0xc4f8845c77f51bdce8a4dec4af134be538011bf5ca2d17f30f6b8810bcc544c8. 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/0f97bb18-34e8-46b8-95c8-8d781e864785.json and https://artists.proofprofile.net/proofs/artist/0f97bb18-34e8-46b8-95c8-8d781e864785.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 0x501be83fbc19a9bae3066804cf388ff9a150101ab188e2193bf67119c6712ac1. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GBSMU4911093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6502de4f79ecbe070b569036517d6d5f0b2447f696dbb2b90c43693558566c4b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5BU1805250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b04d7df195cdc5d84f96f6dd98f6201f08d6148447cb8ed114ccc44a3ddd6a7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:01:04Z), 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/SE5BU1805249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823c9f3440171510546a8319baa9b9353c8c36d0bcdc9b2a3f6c6a6c343523bf. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SE5BU1805256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2566f74f3a39b08227dd708ede46378f923a1604958174ee50fbf0969be5585a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:29:16Z), 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/SE5BU1805248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c5975ce31ae75e5903dfd8409bf211d4745b009a34f8f70d47aeb572a65e33. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE5BU1805253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08e7e5602759bc1105205a954f6849c5666ee8541e6f17de3ceca8a34cf8588. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GBSMU5867269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc518f571136964e5dd8aa40b0532f3d59fab56e60f7a81771f43d3be79e8233. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:53Z), 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/GBSMU5913333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9d0bc5442981a51b4fd2ee4ab0c98b4c1b0fa2cb5991e311967880b5b1df09. 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/QZN882318994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d52d8fd84efbe56ceb98f1efb6fc4ab3ad7e1c37ee73d690cc70e0b4d242014. 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/FRX872155151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518a671459ab64099527985b440acf07e6d8fc91d8f34d9c870cd7e4bb82536b. 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/DGA0Q2346765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d074242e58164c722062ac7c0a89fcc291960169e7c0ff6e04d538f5a27fa38. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/FRX282511150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe8cfdd5d3a861e08f9b179cd4cf9860cbe20be0afc322bac370e46e7e7418d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMDA72557272.