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 0x9e97fed9d8fb84aa8f214fd96ecae440050db383a4ce426c7cc839e9c0dab7ec. 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/81647fed-bf6d-4103-994c-0940de2e66d7.json and https://artists.proofprofile.net/proofs/artist/81647fed-bf6d-4103-994c-0940de2e66d7.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 0xbab740bbb139ec920ade9f5e46d6ac295be3ec50970a1a84328f43c6ad6ef52a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRSME2300444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a272a49c5589817b3886e2c3c69779cb025d8497907f94af87e2218d9c60b9. 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/BRSME2300479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5bf3a74c4286eba489e2305dbdc8da09f359a5952e7c2bc98bb5d5cdaaa75b. 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/FR96X2454434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc061ed62ea1cfaad767abc43f35018556824a39f7c7627db4c2e816e48d808c2. 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/FR96X2454435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2357d64b44d47b071d4795d0cc56c4c6eaa49cbf4a35bcfdc174f64453665feb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X2454436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d30b44974fd16bf013a4f6fd7efdab9116d86aff7d53c3a7535973ddf30b890. 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/FR96X2454437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2885a983870cd4868eb9e93e81ec2947d0ff51b1a0ec113ec7695e58dd1ac61. 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/FR96X2454438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff27ad9b947710618f591fd739a0aecc75b519a2215b0b352a235c32fc936f7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X2454439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1372735ce2b0f4dd5f9547115629bac0b0cf5b8e8560ecd1decb9853d4290f8d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X2454440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd122f67813574b760ca53d36588e32286fb5074eb5ac067123005f9b22b105. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X2454441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918e486739fb6ffad7cabcd7e7a9bec6bbcfc80c4dcb459bf6b7e5293e3689fd. 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/FR96X2454442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e463027f56a4ef0564b9fa5e4778f292bee4c5d0f5e5658e080320abf270cf5. 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/FR96X2454443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a4ceec10d37986c995b48fa879611a3da0baa872e3e4eeea16c6d7345c4f02. 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/FRX452476302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c574b70873fad80b09daee675cfa93585d67ce0b571fcafd655936386217fb. 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/BXHAC2300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938c5b532daeeb4555d72242cee06f9924d44c8aac4e6024fe48b1e67c35ee05. 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/BXHAC2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae6b25c7b3cdab44881c7b0f1c6c0ca3c804a30e728824afd1d3b5ecbb420d1. 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/BXHAC2200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ef0399b1f2411e485a227b917a193e2860a14974b84559d902248bfc94847f. 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/BXHAC2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe7dfdd7221f232f6e496430f4897832a026045a4ef4cc290e7a6dbdd254446. 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/BXHAC2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6779adbd3270196624704e0646d6e0a939154300cbffcec3c1a0be6f93296ca8. 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/BC6M22505482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1240082a09b3c7663948b6f91a16ec1aa7cea548b1db5fbb4e1a0fca5ae438e1. 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/BRD1E2500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa17855ccb9edc7ca8bc248d468de6fd702c01ae87a3501ba26d1f6cbda905ae. 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/QZMZ92529036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6dd38fbc78b1b19f803ee9d226f07c73d79524e045f8e9ff15efbc6e5915f2. 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/BX1TU2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77c7379d6eca98e63708ab3706fda5e89edb592cad3b6ec54d5299d2520b5ef. 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/BXHAC2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae6b25c7b3cdab44881c7b0f1c6c0ca3c804a30e728824afd1d3b5ecbb420d1. 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/BXHAC2200068.