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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c121970ac021c18b010e4eeb4b7c1dbf05eed3c42774f73195be8d64857574d. 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/09467485-2467-45fc-a703-900335d20f40.json and https://artists.proofprofile.net/proofs/artist/09467485-2467-45fc-a703-900335d20f40.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37236534a833723b2ddc64660167dc352c022b8aa545b9f8ff7aab76be18b6e. 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/TCJPJ1912470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e97c5ae7ea8a3ccc1bd01d9ab83d13e08ff9b56577cf8eae2da7d5e1ea2d473. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCJPN2166472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b4b768737fb415f7f2d510c33de67fcb477b004c050fd58ec5bb06aee9c553. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCJPN2166480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a503822535c9b19b25b555096991b39736ef1a2f6d1a763509282ea084496e0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPN2166490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e8b5487ae4481ae7aa21b0061abe86bcbb1b718bf84364bfdeee935f653a5c. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCJPN2166493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19059251de4c1d3d257a7c49398a6fc5cf58979d205eda78abbbe30edcff2fab. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCJPO2154229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7593e9eec7a81263b323eca11972dedfa7a7045f2abcff598c4573404f765b6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCJPQ2106786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f03b7881ed94decab0890dbeee475ec05d5cce86d48bef0a9b9b1f062e1b344. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCJPR2204609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4d794fbc5b55d62fe7beb481906882f07e155e3f12933629d047ba39b7103e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCJPR2204629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7593e9eec7a81263b323eca11972dedfa7a7045f2abcff598c4573404f765b6. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCJPQ2106786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2df0a2127bc78e80ba66bb6430c3caae91d43df0eb87cc9920a7564e26ad659. 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/TCJPP2101208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139dc62d58999a67b2b4a605649e0db5cd614c4f7340ff602283184f1d0719e0. 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/TCJPR2204620.
the eye drops from 7th floor make my eyes burn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c61979fbba7b6bafac27ddf403c424a029c018ca8cdc9afbb590af94dcfe88. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPR502304390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf245c657503e675df9d9e018e5644a2419cad91ea20b32b23ae3a9fa3884b19. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/JPR502304388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52629daee582e46226d8a06a8dd47d840120c6f117f612a28a4b0875d5cfec19. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPR502304389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d50ee2d6494d79b3aa99bcfae4a37a597862e8f42b49bfa27869967ec76ea71. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPR502304392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4e6164b69e2b6519bc26b70a9a741871f7b498a5e591e2b361f42fa37f69f1. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/JPR502304393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdbbac7575927aa6b71b9554c524bf55410aa29add6e3d77594acca2c1967dd. Chain 2 (Bitcoin): anchored in block 957794 (2026-07-13T03:10:12Z), 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/JPR502512455.