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 0xc765c3d99f3a17f4d2ca701c0074f13294e8104b922623286b071fb825a0a343. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7ccf579-e71d-4a73-a036-6a70d8758511.json and https://artists.proofprofile.net/proofs/artist/c7ccf579-e71d-4a73-a036-6a70d8758511.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 0x62fc29e14ae48a2042e4efccefbccc76a4f0b21e45c20145aa1992847a19767b. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:44:10Z), 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/GBJAJ1900329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0229a4ed4755144f2de85a4bd4e7f8998e2ab0f78de9903b1275d2369314afa. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBJAJ1902500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9956aa0b213730c08c2fe961becb73c8e1ab09cceceac424d587b3bdf29f4839. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ES94G1917105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f4163329fec43d491c8b10ccfbfbb03c2ac64638ad70c470094d895962cd0d. 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/CA5KR2125604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65cef0281adb4683c5ceeab3b8bcbcb14baf3df5a79515ec10f839009686e22. 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/CA5KR2125605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43529611a2a48ec9535c7114065056416dd3eda319847a6326ddaa9bdd6e987a. 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/GBKQU2162153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf617909a90a89919e6c6b38aab30f19793e7ecae8005b0cf2765cd844deed2a2. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:30:12Z), 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/GBKQU2162154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a3467e3fea9d6709649e5d2d238063d76ac4ab7bce7fa54bb17160ba13f5dd. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T12:01:16Z), 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/GBKQU2190695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8271e288c40d3066d72be538b266b5e690f77a2d1bbb6cf5308b293fbbdb5479. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:04:49Z), 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/GBK6Y2258301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae33b2e072d0cc3776e44e59f12706101e3e786ee61045beb36a4b76269427e1. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DGA052343193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4a16fbfd936107332bec735dca79866a8eac5b3571baad819e32e50aac4893. 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/DGA052343194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76380669e4c7e3b8c0fbd81ae788680030a7b04b19c74658eea4be4b4544f6a0. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:31:52Z), 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/BK4DA2401248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae5076183c4b7a0ea23978058098f22c16faf668240179a7656ee004c644ee2. 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/GBK6Y2423503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f017be57ae8538b644061e0ffd8c6671f6164cec3c91d76118d044105d7e749. 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/GBKQU2483819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e9e27245d72eda9529ab60ac8066fd8c27a38d39e16e24d6cd73f17b640602. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/GBKQU2483820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c6abb40e13c24d618a5ff8f7add8d6da88a64c7a4a044fe1bd99810cac10e5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:36Z), 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/GBLV62408701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d6c3b6c051b1d58036d131009eb287fcc448e7fed4f3d8b6d6aa5a3367d01d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBLV62408702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911df5bae4a45573e9482806df8e80a77055b0ae2f6473ade8bd4041033c19db. 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/QZAKB2505194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12db6fa4650627e1034af8bfc3ffac2be7e82dfed928f533b36c68aeb38a9eae. 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/QZAKB2505195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0727362fc3e0bcbf4986ce971c73bb46e2d19bd2515e34fcd66fd69f2cd4803f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/GB7NR2561201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65c59692dd467b7da0168bcc2d6eac450cb335201dd84132aada69504c51e7f. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:42:39Z), 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/GB7NR2561202.