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 0x7b1e24bf1a3f4588e67a18ade44cc927723bc5aad9016c10971c3921929b32eb. 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/ef08deab-9680-43a7-a9e4-0687639461d0.json and https://artists.proofprofile.net/proofs/artist/ef08deab-9680-43a7-a9e4-0687639461d0.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 0x51d8a92a4adbecebf3500d95fb94fa2b0f21775a8f9955344dba00885e1f0299. 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/SE5Q51800221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46aa05d78bbe175a02a59b9975a05e2796beedb4faf6c4c38df13f78987e90e5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SE5Q51800436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601aa9afa85b385cf8e6558d0c8ffab2001943f067cb01eef0e9cc435e2dec80. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:22:35Z), 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/SE5Q51800438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d20e7d6d1fda2abebc0527faa049551730205e7045f4e80cbc147bef654f63. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5Q51800439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb3a1828a2b79b2b832bee1122a6500c1d0c1d9dd1a1419376eda5e3e187478. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE5Q51800900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9a2f7cc1367d5a90d68ed1419676ddb5521c1e79e7694f693d37520ed6a148. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE5Q51800902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fe7cddbdf21704a826667b72b558c76dfcb72bc58d8ca4fcbf512f8832482c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SE5Q51812879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed964e9d3bd6e43308fbf87ddcf503f6a8856da0e6c36f9bc5e89f7d869d9272. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:16:54Z), 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/SE5Q51802593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a6816ca8472ae71e4ea2da45b6bd2df80b4f50ef6fa49b2e063cb7d4aa226d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SE5Q51829189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c7c3b3a87a8b75d92bdec7e371bb4f6f4501a858e5d2ca0a9d610056ec92c6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:25:16Z), 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/SE5Q51900233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7123250b12b9c37fa438f5549400df0a23e00f617ecede2247a4f931c4246886. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE5Q51900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ae071a5ce5fca6e92ef672f39e1f049fcd520cce5a29e128a18d120b9843e1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5Q51828739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11445fef42082155e0d24b91de47e072c116c5f4550c6b31db16b8409bcf3a94. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE5Q51900902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dbc0248701dc9e1cd333b54579f17988286419e2b8585fceea7ea1da4af6ac. 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/SE5Q51900251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220dbcea2e02c65d3e831fc7e7d23be64ba2f894d6a71d5b4bd8d49ee06f2e02. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:17:31Z), 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/SE5Q51900948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85807c145faa129e25989411259defaea5448e385f62396d58a19c81d599b047. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE5Q51901298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8c019ce1ecbb32b3a40c5dd9f0d57336c5a8e6c3e5b4d685347ba79c596347. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SE5Q51902449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f96e7030a561c5cec5b0bd8fe330a15687ed9c3462d8982d53aaad2514bb022. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:24:10Z), 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/SE5Q51902267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513ddb39b82c3c0d6f762c2f108c0ddc494aa946e823fd8f69d895ca247f1eac. 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/SE5Q51902518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffcb5f0613f8530c42a935984c4381937d0459e677419c4b305091b848566ce. 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/SE5Q51903023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb96ed4969dedb42ba56fbc3735f41116308ad11d6bbb6a790be11bae7adbf5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE5Q51903020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b52752c229ecac36d760240220a6dc6fc5ceb9f91c74c8bd6aa0ce14ef67ed. 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/SE5Q51903605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb8767dcca2dd88565c79a50dea3c1bb77cea13a4cc3dda8b7e8d6712a9bdec. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SE5Q51904046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099fb70b68e8a5ac7e6ce61fee98962e99902537d8988a1946c1854d8f3ef970. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:30Z), 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/SE5Q52000642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a6dc32b81d62288f2e98a083f7d90be92e20653833cb5d2a98ddf0dce243e6. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/SE5Q52000491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98155200636698e6b19113c15c3564712c85df1ffac1a9f2574ec8d71ed2d706. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5Q52000487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ea9b3894647d3cb5a69e41147615f80d69e01b1866f24b13c1d9421cd653bd. 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/SE5Q52000477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e53fd7283cce4d79bef8c7e08708f1e10ad91c7d4030fb6d74866d6e6422521. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:52:29Z), 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/SE5Q52001398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41a9d3d4ad1e769af8ae03a0abf643506b617847173758df5d0c49afd8cc371. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:13:21Z), 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/SE5Q52002376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b957f438665c27292a1376d0397cc6efdf2227d122fd3b502d7ecce772c4c21. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:32:33Z), 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/SE5Q52002938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183466fed78a90e26b5e825d54c62c654cd7a5958ac2116e5ed948f68fa6ee3f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE5Q52003394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd68ef39fad905d2afd91e37ade8c3ecfc1c2a36d2be513931b94e5878152198. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZNWU2517749.