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 0xd6b3edbbc961f0a697f14154115fa62510a5996a39a77618cf2e16755b1ccba5. 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/8f9ebfdc-d215-4054-8897-fbbbb13cfa40.json and https://artists.proofprofile.net/proofs/artist/8f9ebfdc-d215-4054-8897-fbbbb13cfa40.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 0x2d500f9e19d1e6b130fec891376a6b4e88bb503eaee74538aabe83ecaabae47a. 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/USANG2215437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19edbcc82a3548ead81872241906e6317a3f59720f99633c2f54349158f51384. 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/QZVUD2300187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd9dd1272b72d7790d338794ecfb363310dff2ab047063b985b925306a4f5de. 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/US3DF2231791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83e11f3bfb402c4d1d13cccf8fc8b98a376c8e0eb79f3d49032dcfee7ba9550. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USE7D2100477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fc8aa1066bab9939ad5ccd57a5fc1bab65267b2f4b4e754ccb3b83d3d83df9. 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/QZVUD2400296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbff1d693fc5c619a08035dc6549dffc898f34c28088aeaa2e9a7e3ebb7b0a94. 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/QZVUD2400309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2814ab0dccfe81d41ead11a5aa2d9ed71f13809becb0d4540d9d4cadf65611. 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/QZVUD2400339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a427ea0b9646dcd94fdec7b8e892fd14f6f7a968c5b9faa55a06ce0b1449976. 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/USA2P2503280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7fe9ca5625315705540577c56711e2415f5d10a4ace10158e610f722eb584a. 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/USA2P2503281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16a945587091c69a6450fb3f99781147075f1a60d8463ec997e2b70cdfc2de2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2503283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4713eb0d7ed45611f5e60b856fc1a1993467cbbf41a9cc94a6ced2f23d6eea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2503285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf561b65eb77e7647436eb8a3fafc5448da99d38d9d001557e2cd4cf2e946c0. 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/USA2P2503286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac2071a4d44828e592a954c6c95700bbb282bf4a50b4035189355696ade9928. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2503287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd971588fc9a814072a55bea886c23c307f750df18dd1406b4900f50fe8e7f04d. 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/USA2P2503289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec6f349fa7413bb7424588acc5586b86345478c156cd01af245b14bf155fd45. 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/USA2P2503290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddeb2e78c91f3d5cc8ad816ad02b13bf04b9da32ae73a50b74089e2fd641b3f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2503291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b344ae0387ff82f9d3d148bfd4ac912fe2a6143551f0c6bd3b4271d1f87ec2. 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/USA2P2473057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f0e7d0f61123c34bc4a5afe0e228f7f3d63e807a7fd8aa9e9b5aa8d29bd60c. 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/QMFMF2427142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeeb573213672202f6078f7cff61155f604125e5831f2cab764076570093ea30. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2462797.