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 0x65336fbd7ea3dbb7c9f136fbdff1af4ec3c6069055fe18e6bb2b9b89c94d7b17. 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/839a5334-81b3-4c2d-8c10-7e2000a37069.json and https://artists.proofprofile.net/proofs/artist/839a5334-81b3-4c2d-8c10-7e2000a37069.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 0xace30d2df8af62a88c172efd69583f6bd7b5ec36f8b62ff4bf905a8c1d4398c3. 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/PLH492400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05c4410c5b82403cda863985f804852cfaf9c3a6039df2e3f5a5bd5a1c55251. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PLH492400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f71b9ee25f4b41178af61fbe5cd7df9328533dae3f49fdf2c3cac3e84ba16ce. 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/PLH492400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0a19f524751032a131a8adcd5f9b5f7764fd6ba61f37ef29f4db0ecaf4e9ff. 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/PLH492400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b83c7daa9984c52eed0d4c8da491260a7f41283a4baca817fd599bae97838bd. 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/PLH492400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a566b86bced345623d885ba5f1d34a9f4a983c98926e66951e587cf85db0a8. 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/PLH492400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e561ec0d1a1f2e93cce5dc92f1d9ce1b839db6a6c0fa80dd1e96c64d0a2c205. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DE1JN2433377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842f6c076420cf97d5f59eb348d59551f4e731e71d06f5a790e1bff0451181ce. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/DE1JN2433832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ce243a4cd0cce469810e06151e30884656519be31208c6e36399a37b09fc47. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DE1JN2433439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f290c1b72de6dfd11917dba32ecf94b1f83c734bbd0a6009354a0b33872818. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DE1JN2433353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a82cb09a8bda3b060a7a0f30c8ce4e3165abb0c00ffb6d36c6786400e5a0a7. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/DE1JN2433631.
Swing Sophistiqué sur Notre Itinéraire Musical
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33281054bd89b182e3c0a545566a1fba0d9bceffed9beb96d6e6e1d4107da4b1. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/DE1O62482799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00edf78dd24dab4436debb7c5acc970300b3cc61a9fa9103186a7963263abdcb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DE1O62482316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04865ea611bb71e4d883f23b447537132d79ca6c20f8fb7eb3a3321ec24c1e5. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/DE1O62482277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453a6a3295a611fbccc66fd1075ccc11573a1f535b00f9866c23bf12f2c44017. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DE1O62482300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a0a6a3bc34e01c2bb44ae2fa5600f5431068081fe31f3f78b836ae6e6a8586. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/DE1O62482310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce5e2208e720d12d213c1fb4f7b259c7b64de2d8ee259f0c7b06cbe75eb6e28. 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/DE1O62482545.