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 0x9a1018956467b3510e95d0fb6cc078cfb1cf9bf3a8181ae667452139f54359ed. 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/8871fd98-cfc3-43b1-934e-bbbf16c4a180.json and https://artists.proofprofile.net/proofs/artist/8871fd98-cfc3-43b1-934e-bbbf16c4a180.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 0x1c075a98a0e7b6f0d19a40b43a0cd6c93c63c18d46b3fbf498af250ca7b3e0ed. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:33:35Z), 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/ARC572002250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1cf7362d67c8c4f3dd8fe7cc8029a3f0841e46197b51a6922082dd68db10cd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARC572002252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5ade48e6eef90ac070dc3511b43a6bcc5c24a8a75d5fe78b65a26478b59bf5. 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/ARC572002253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c841e6a4868f63471f83a8934f66051f2a68dccd4c2bfa8fa95156abe9cbd5. 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/ARC572002254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ca04ec4e06a12b432938d9b7da3ff6d4beef391644e0864a2a4b5b6e812bfe. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:58:27Z), 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/ARC572002255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51870324a7baa71dda2c115fd962e789e62270c99a5a2410ec0849d66569e921. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ARC572002256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf527d447d023197947446812aba5888d6b2dcd76399fe144ceaeff6c423227. 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/ARC572002259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6b72f82854caba643941d26cb5d26a437aeb3bfad9110edb9ecf5d0906c468. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ARC572002261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8992af93fcd53c9103c89ab01513bbd15f46ed951cfa4bceb095c88cc45254. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ARC572002262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5612922bcdc6e622d976ccc354d13bb568e99df9ee70fd7e410615826cd0848. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ARC572003201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6909fb9d50ac89711f036e12b446a127367e0dde8a379d38d153842ecc7b67b2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:08:31Z), 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/ARC572003203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fc86f17a126673ec46014e490c8868ed7a40ca3025af95a947516fa48e5535. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ARC572003205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51414bc7db5db262712d6b9f19becea4ed5b071c338764d478b4fa9f49fdb09. 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/ARC572003207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d11f0c561a73dd5daa0b82e7addbbfa30dfecd6025154ca85cbc0ffd0b7b03f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ARC572102786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50b3bb206e746b3452d592a4d16af14b20cf28c1c158b1878e86c20e0c5d35d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/ARC572102787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60a917be5325de5bf7c240b6bee372ab96469fd21b8000b60ea4ece5a3e89ef. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ARC572102789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea83c6569602a5fe466d7c9ef0656b1e9f47951d6957a8f3d8ebabea93db168c. 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/ARC572102795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9cd1d7b90999ab81f9cee359a5266d74766a05f324c91f05420c7c38448350. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ARC572102796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd3c6ec8921cd2474cc7136d2b3e7a470f7bf8745f6a4d72057d89c395e43b1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARC572001326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c0019acd5acdfbe8d33c2657a995209f96e47a5ca982aa36fe984ba239a1ea. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ARC572001327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3b796e40bd011774ae01ab3f996136a5f46b86c5ef61e6a36e97e5e4619705. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ARC572001329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a37f9936ccb9507b4d8e9b2e08b1cfd11a9735d1c875c683d609a263778968. 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/ARC572001331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc704a54d7d705632fc3fac932d30e1c8019bb1097a9a2f55ac5976ea827115e5. 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/ARC572001332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84600b31a61589d0724d724cb39318a5b22fbdc9bcebc45e9212e6efd67653e. 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/ARC572001334.