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 0xa81607bbdb12777197c201d164c43bddb81d9f71a387f380df3605db9f2f7669. 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/4190e564-1d92-4820-8a00-53bea0529ea4.json and https://artists.proofprofile.net/proofs/artist/4190e564-1d92-4820-8a00-53bea0529ea4.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 0x150860484c70743a99de0ab13bdbec5fa8d7a60c6cd2ecd57e3975922a8d3d2f. 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/FR0U91000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62724b7b95f9a3192e0fd2806d16b5faadcf8316b18ca50d766020c4a181b8f. 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/FR0U91000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015956a3d7e02c9aa2437e65aa884b1334e6bed76ee39213b9bc066af16ffe24. 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/FR0U91000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9eb02ade17587ff92450cad4dbfb43a18ce0c0f6ccbfdf59a24750c1a5ac2b7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:04:47Z), 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/FR0U91000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa5c0b0c799f9a5462ad0bd05f8374b107777de940ba7c885c5d8c058ca839a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:46Z), 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/FR3JT1000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d8793b7758344f23c9455850037a9880d6aa00c4f9c29d73a184fb87f9b54e. 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/FR3IT1000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb78d3da734ad9fe07e49872321aafb206a55ae33e2bac767e2d8f5f6816b2cf. 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/FR3JT1000240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ee63772bc7f5a3387e0ddfc21c5e2c044176815c65ec742b8dd1a6d070c9b7. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FR31T1000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807bdac23e8609a8788c18c25251c3d08648bdbfdf31a40538b59cf829594358. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/FR3JT1000270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c482864b2c048e4c36b2136e8f7781564dd9483a72c67ea3dee8f649df6f9c. 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/FR31T1000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca324e4b24b70f6f8c9efcd35a2783994bd63a3fcac7c05dbbb0fdb1851fcda4. 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/FR3JT1000290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79564eb68e5831393c9337201fa480a8c26cb66afba74ed747280a15955be8c6. 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/FR3111000300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a3516451d128fd8e07994a4b70727b2b3cc765232b79b29b013bd82e8f4cef. 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/FR3JT1000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dc183ef47800d439140b8394f81bc21bcc99379b954c87427afbc4d0f89034. 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/FR3JT1000180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b794a5581ab2b44230970239c681dffd1f8c0c9d58a53b5d7cbf7b50484073. 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/FR3JT1000190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0e01c776e26726c1d860b81ff77343dc10704c9448a61e75e74afaba2516c9. 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/FR3JT1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bef923570897b65b0c3e79323640ed5891f1c7717ddb32a1940f3ca39f5bc0d. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FR3JT1300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d08c70538933649a537d7e7eaa8f076296d269f01063a96a11f93f4d1d326f. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/FR3JT1300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb123d7031e67bea6caaeaac2c591c298feed6fe8838e1f8ac91e7f766bfc8610. 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/FR3JT1300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac8e0ad965a4f77e5a41287bc7001bb7e8fd4244ddff18b34970f67716e27da. 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/TCAHO2362150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c2e1646a93d2fa1443e622f5446b97e0fd4faa0b9818ed5897e769ae98286d. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/FR3JT1000420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bdd7ecf29d833307ff90d05f166ec5426fdf89a9ac26d8bdb3584c0a67ef82. 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/FR3JT1000360.