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 0xb71327322455b90e6154f416577c44b811acb7aec2346fcaaad3a7ad76fcc194. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbfbc75e-a301-4118-9929-5305c327dca0.json and https://artists.proofprofile.net/proofs/artist/fbfbc75e-a301-4118-9929-5305c327dca0.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 0xb6f1ba66343a9f03a3d1d05748a001b159305b7279ee2d05783ddf359341851c. 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/GBKPL2169203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba6b1b2b2b60222408058ca6076d575b527933de9992f015fa54f558cfd3470. 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/GBKPL2166598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1df4044b6fd60e2058ac2902f0e0006fe482b2a2d107f32fbf98119c6329276. 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/GBKPL2169141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32329dc177f8eec28448abbb7e22e846d5242c7f8cf61e4d10f81dd8dfeabec8. 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/GBKPL2169137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f19d6964b0501af16685b16368692aaa604823ed4d3af160dc7192d7981478. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKPL2169135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbf54495370dcbb5c15f8afa445f51ff04c7e9f84c18d6fa54c6c687b7fe266. 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/GBKPL2169138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a25da96ebfc4ae40b132c8f6cff0fab95745077a229a645917310a510514d6d. 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/GBKPL2169136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4a9b1ba0c8a1273f42d2c8a055120af2ff348aeb807a1c6cf2ef92edd0cdba. 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/QZDA71816865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee5f6018da67f2d743f5fbc8c1613a07086138dce00b591cf48f1e78775cc48. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA71816871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc6db3d02377a3ab3747121dba279342d5baec8f23f5c26a9f43a5ebdc3d32d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA71816872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c30f01601220b94af3eb96d9403a0ffffe95bb34768f7313d46b37b1d902a81. 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/QMDA72207557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3d814252aefe4df75795308f1fb67474351294ce6b659a3a07b191c9206dd4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKPL2212326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc044424d238dedc8144243ea8c910dd92be122e987a5bb252447896cce36cb7f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKPL2211336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3d814252aefe4df75795308f1fb67474351294ce6b659a3a07b191c9206dd4. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBKPL2212326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc044424d238dedc8144243ea8c910dd92be122e987a5bb252447896cce36cb7f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKPL2211336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc044424d238dedc8144243ea8c910dd92be122e987a5bb252447896cce36cb7f. 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/GBKPL2211336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c4ff75f583a0d532508dc256ee69313cd85760d64e5cc73e5d9717e52245a9. 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/QZ8LD1957765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4058b02f9f14403a23b03b096fc0a65d9a2b87969d30804b0a24812f1615141. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ8LD1957766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c7add1c89d7c44df68184995be74bfd601384696cf302e69ed5d3c9dec325d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZ8LD1957767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36d337e80d201a153e8a909ec6aadf1cec69173dcecd85ea04d3d4c01e3afc3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ8LD1957768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7b5e81ac4df536f7c289bac88f0996752ad2c7d8bcd1aad3317380963096b6. 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/QZ8LD1957769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac1f0b657bcd9ac5457f6087ff67360028c839ff7d7e5cab33efce7754d81aa. 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/QZDA81886396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b0ad381c77fdbc048b9b50d2f95f0050671ce57d6d5e58f0359b4ee20951fc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA71819309.