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 0xaf31cb071d92dcf2be15a93c84db48b22e440ff1464ad1cd075e2be0a97d9217. 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/d0131edd-3cd7-4870-9fd5-25b13f6ba081.json and https://artists.proofprofile.net/proofs/artist/d0131edd-3cd7-4870-9fd5-25b13f6ba081.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 0x5b1308e4c3c94f04424c5449e79a6d2004fa93403d8c4223af45a8cf351a2fa0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEZB52310276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a09b50d41ef5692b5be81204cabcbcd05b136e27494ca74274f74b7dd8364b5. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/DEZB52310277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28840c674bacff881bdf1f85883e1dd8b12049fccdefe8bcdfacd0145eb15cb3. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/DEZB52310278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa72f4743261ced0a021bf5ebe2ff896a471240b4b0d33acf48243cf5cb5e5f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:04Z), 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/DEZB52310280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07566f658d7c573a5bf81c1fa813dca205740f16ff0e497138ae35fa6423c325. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/DEZB52310281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830f34c604da3f24952edfdb8e979c786df032f1de689d44fa00192ff50bbd1c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:30Z), 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/DEZB52310282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103b2014fa804355e2236e6d5fbb1070e777a6df6970c79576a22e5ad4d225fe. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:08:48Z), 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/DEZB52310283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1cbf9f152714752ad1989ca9a10b64ec14f614cfe44b96a2024de5d73be36f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:55:17Z), 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/DEZB52310284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcfbb9d0cc29144377a221f33498d5792476e1ae944bdec6eae7a7b297b5641. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEZB52310286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33f3199b567d92fbe3a0a0535bcce2014155e25bd2c543f3d1dbdcbf0d8f58a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEZB52310287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da13c4f34f4e9f6b6d2c0a6782346bc6e9390aa976dbe0c7981991c8b08122f. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/DEZB52310279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bf06a354eb02c76411217ba61aa480f07cd2cc4e2cfa9c8d9b3f3dde115046. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:25:46Z), 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/DEZB52310288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059c1c56c16c1af7218845e30d8b83a68e3606f4e2f7824f4969f243b512d4d2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEZB52310289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0c484b01e1d5d99e26fea6224965aa20131a5792315373317187ccf741e240. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEZB52310290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2973a378791337b18915a7abec9010385b417ae6ec4b6c8d0e20b2a85930fd60. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:26Z), 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/DEZB52310291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eabc8ec67f991054c2b3f58aff31d85ac370b03b227b1396cfaac8208a106a5. 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/DEZB52310292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e2cf9e189db87f610d22410232f27af5a2c02bae34e9e5be243334a67b0a21. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEZB52310293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ab38723ba6657a138e3dc34ce1b7a53695e3429f0c917c0a1089f8a8d98e85. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:56Z), 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/DEZB52310294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bbcc3b3e8b454b0c4d07bcfddb00438c122e891d28bdd81288361da75a2001. 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/DEZB52310295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec0b6e8c102146e94f60cc5a82f56594e18514428556543ce9983dfb95f2890. 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/DEZB52310296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb778c27c4b1471c0212ca0ed0c76dd7492af03decb8beb70b40d6d4192f8a7f. 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/DEZB52310297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd904ed57850c41071ec3341df108179b0dd884e00c5fe4d246d9f2290e5c2706. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DEZB52310298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930e56bc69aec527a62dfb63831dde20f29a5e6aa914f96cc266ecbac3c88eae. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEZB52310299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0097de46e09ecfee3e6f07617bffc1b26b7ab9b2a82269bddfdef1e1db16bb. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DEZB52310300.