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 0x08568b82107bc11faa865c3f7cc1d64b778a996cc6b235ed276474a07d87cdf5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/feff1c17-1b3a-4e9c-a4a5-48049c673107.json and https://artists.proofprofile.net/proofs/artist/feff1c17-1b3a-4e9c-a4a5-48049c673107.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 0xa0d6c193011f4b52c08a7e4ef918eed9682135a5be154ec92091f499bfbcc7e1. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZFYW1921036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46766983c47a92def17341a09a860ea6b1aeb1b598192389325b25b5f30ec99a. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:00:56Z), 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/QZFYW1919432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46766983c47a92def17341a09a860ea6b1aeb1b598192389325b25b5f30ec99a. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZFYW1919432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbc683d756c38d64b49ea539e3c51a07444049190f6ba8d536560e8c720140b. 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/QMPKX1874504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58f4d28018ff3ff97f4c8074320d156516e3cec7827036701be4294e0e32d68. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZES91832617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58f4d28018ff3ff97f4c8074320d156516e3cec7827036701be4294e0e32d68. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZES91832617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c96b49a70fdad4303b4ef97f56ded9db6b51f660187108d1fbcfe4064e98aa. 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/QZFYW1905346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c94923ba8a58dedbdde4603eee7c753c5b065dae61ac9170ab3238f93a164b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ31901955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e698d993d9616df492f48624029984c40b363870a4bbad6e77052ac87b2fc23. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:33Z), 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/QZK6P1954017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e698d993d9616df492f48624029984c40b363870a4bbad6e77052ac87b2fc23. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZK6P1954017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe214ae9edd07417d87ef426de5f870ca7e033b5feab9bbe066ee555a2a3a243f. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T18:00:20Z), 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/QZFZ42064389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe214ae9edd07417d87ef426de5f870ca7e033b5feab9bbe066ee555a2a3a243f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:43:56Z), 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/QZFZ42064389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aeeb2b52e5f020a28e783edc1564e8d50679997441c5138a8feb27d8257bc05. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ72053834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a4b356fe97da22649fa3c44443e9ac6992ab1369dd0ffec0e59236c6288ef5. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:11:17Z), 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/QZDA62026916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefddd6fb69e6d2431cf05c1f54d87fed0379986c7bdfbacbf7c317db3b81b264. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:05:45Z), 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/QZES62017753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e86e96c42bd3724d655b61bbd8af966e153274ce465803e1c64883d7bf850d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE6QE2043095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5cdb29a279db35eba6b70a414ab359939f1feac80ba7ddc11411e610102d8b. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:38:25Z), 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/QZNWW2079057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12692833473d9eee51c6d18a60a80b47f2d1bc4cd9e65a6a91e30aa572311f9c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZK6N2111376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5d12ad74dcdbf01a5cf009854aa3ed42cfc47914e357373eb06e648438cdae. 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/FRX452248720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2af4bb76158255a553f09cb24b5847e5f1f9fbdf88fab1b9e05128bf557e74e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5BU2516655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be3edf7a354d4ea8703f4292b9a09b3b71be5a24d9936d1d77e01aca37cc0a2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:52:56Z), 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/SE6XY2512218.