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 0x3792527418aa2a87fec662ea3e0c850872b3b2b5d8908de3877d5d2466c7891d. 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/8454fc74-10e1-4d0f-b1f3-2d8c8eb990ad.json and https://artists.proofprofile.net/proofs/artist/8454fc74-10e1-4d0f-b1f3-2d8c8eb990ad.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 0x9a5b74763f394b581bbfef6abcdb8495b28543db08292db33836bf92d5c9e990. 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/PLU242300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ac23684654366585b583e3df0d0cbc8ff6bab449c770b38e369594661e1d55. 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/PLU242300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafd86af160265e5fed0935884f19b3faacc84c739fe66fdbe3f3f72db846453. 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/PLU242300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ab2e2a213ab481e12a3337490cf0ae6739659fdca7a89b0fa1530476ac7924. 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/PLU242300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba611aef34811c7d5916b914c71731c5b34efb1a25a25e49345dca87c28bdc9d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLU242300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a067b0558a972d0ca90b06f473f0bd42243e1261a260817c4bc26149b789338. 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/QM6MZ2306637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb268537d61ff31d004306f362e79442a08b4a02707cd7bcaef69497f65ce1b6c. 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/PLU242300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c651b946cbb4e1b4286fb0cea354cbed5a639d593f88199f65d9adca8f5f48. 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/PLU242300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbdd7232a78039e7fa0398c82f9d2ea66ba2bb0aaa7e7b941fed928bbb52d7f. 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/PLU242300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160ff741240a6567339b7d83dd9668cb1f29cf8b02c58cf497bff3a6a660850f. 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/PLU242300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816dd0414b8a9d0351e1091d41e1e29b0f560463f6f23f8123f9d7730a7f1bc1. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/PLU242300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a067b0558a972d0ca90b06f473f0bd42243e1261a260817c4bc26149b789338. 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/QM6MZ2306637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ab2e2a213ab481e12a3337490cf0ae6739659fdca7a89b0fa1530476ac7924. 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/PLU242300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafd86af160265e5fed0935884f19b3faacc84c739fe66fdbe3f3f72db846453. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLU242300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1816ed9a8922b7774c63d338f7e4646bc4930b7667fe98aa8f55fd16e243b3. 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/DEQ022107695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b76511212b94d82672049bff6cce245fa41b670528533edd53a4ba6059a771. 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/USCGH2115859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94656d59641386ed3f3136b488978b03f09837a8dbfb298b13e6505049199f67. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USHM92032816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8fc4984c71d93cc2ebbc2ebbc033fca1fc7c35827d5489988d05c515779109. 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/USHM92032817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fab83e2e3fe4d0a1a69e750a77398f8e0a860b4925976570cf41561faffea9e. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/USHM92008852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407df81fb1f2966c595c2ca04a4c0dfdf07addd5309dd093074ae6f733b70414. 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/USHM92032818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbfec4df43892575e71fb689522f3775a6940cfb8dbaa69a7813210446d7934. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USHM92032819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fab83e2e3fe4d0a1a69e750a77398f8e0a860b4925976570cf41561faffea9e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHM92008852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e182570809e4ae0dfadde0bb0c6a42e71672416e6b6a39cd502840068b03bf. 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/GBLFP2268678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47a8155233259f1cf6c89c218bcc3ae9e280269e670e0a015a7c6e63335d64e. 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/GBLFP2268677.