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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe217f9b53ecc7dd3c0da244b7f17f6ef20d48dd9ee822a8253789287f29285e8. 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/a5cfa684-675a-41ee-a4e7-579d414452cf.json and https://artists.proofprofile.net/proofs/artist/a5cfa684-675a-41ee-a4e7-579d414452cf.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c98a272df61b3f398e3ec5d7c6b3d8ba078870841df0dba02e74b82a36a5e5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZNMX2191602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553e773189a2465297d7138c79ca87974584916fa3e97030357a367a6bcba257. 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/QZNMX2191613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a788f20bd50cc75079d13f786bf3a5699a8f8c820b364eaf7dbe27656adb24. 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/QZNMZ2146698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdaff78532415fe90adec9d3063369ea131823519ffd81949889167ae635d7ca. 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/QZNMZ2146700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b917bd0a2ed72b98794e87eecde9029a519a01ae6838b05aa51b2f0f477f911. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZNMZ2146705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdada6601b3e161d78a353ef764bc6a5885a2d42adf87cd7bbc8df1f0f77d6cf. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZES72242312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa792726a24d32d1136a17aa0cf37cc7c3f2602571b9e5167b8b7212f5cbcc81d. 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/QZES72242320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cf52cdd76729a8d7371181851369d9af9fd06a72c2b2d18e1b0bb36da7648d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES72242323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c270b3a0ffed4e2c4400f0a7f0055d0160a57362d2e5ccdae3c29a0b984e2d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES72242327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16182cedf24909b2a3cc9ecaf2ab13a190994357dce83e0a00ccd20862c6a5e7. 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/QZES72242329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d070b88da5ebfefe5cc79a0b09f2b72deb6259d32aeb823985b770e6e34d9d0. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZHN62282229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b2367ca990c0517ae985ef4693bd4baf40f75a6dd395e4e0062bc5910af20b. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZHN62282233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec252af5aa21e0661c6d02fa06cd5eeab171edbeb824ce5c9c5d49cefe91c5a. 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/QZHN62282240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2fe0272add8b066998ec8555fbd27061a0cb69254d5ca52232d816035b9d27. 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/QZHN62282243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0d5aacd4534b748edea9f010802df7cc85ac0041a1e610adb890ab8602630f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZHN62279518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443d025ac747f0d972d16fc7f105a562373250d9feb177025d1985d5cef974a4. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZHN62279521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd74f14abefe425cb898e44fdef235481a91cb6e13278d9f6f74866276562f9a. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZDA52275235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3a3dc63cc33d5a7a194418e65af118bb05f4cf4e3c03554de95c7e9c434c78. 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/QZK6M2269139.
Go Stupid (feat. Bezzel2wo3 & Dee Groove)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52ab4d0651750795c87f85abdf9ce1e1750356b8eda08d359c27b19761af5b5. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USLD91754481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6721e2f0984dc5ef08d9ddfa9ac5c2311f1af44851935e313f6e05a1fded7c0f. 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/USLD91754485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc23b3e4f82b2d469e67e4edb3170e1b4c17f40b7d0d9767c4b9690c218d85ac. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USLD91754489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad493e7cdfda26f7d81467e0923da5512cbf0d9c109fed99d5f71588827042ba. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/USLD91754498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca31107a67f65f4bfd9ebf6ef62ed21b0607d52acf937a8d1986c0ae4e535c6. 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/USLD91757599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa5696ebed97038231ea1d3ae28d13aca9fb8ee5d646681af4c2cae273a6539. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/USLD91760474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6acd8b54d0dee396771fe3cf9f05cb21ffa277a2ed92d8448a962dd459f214c. 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/USLD91769908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ae63e93f84c825890ee618d97de743484d5c845de0b573bf3caf50598530a9. 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/USLD91769638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94e2b36e38f2d45751e89c733c13756c825e5888468dea89921005f18ff4698. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USLD91769644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34622edb12275600c277c0999df00482afbac370afaba491a6f73e1057f2f570. 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/USLD91769654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33be2f92959264d8a60df57d788f68f5f0affe3001f8795561ca37c6aa10f4a1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USLD91772851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98f277fe3e4813fecf625c472defaa05050662328d0dd0a737e60be5a421831. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/USLD91772863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33be2f92959264d8a60df57d788f68f5f0affe3001f8795561ca37c6aa10f4a1. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USLD91772851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4a51b7b10cb8ea90dd683ebf325d2d93f94452cadb33a9509b82b8531d4cfe. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USLD91772857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f85a22ebe95c380e8617c09908c156dbbf234d2452469221f2ba0e4d478de4. 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/USLD91772858.
Snowedln (feat. Trey Bands & Bezzel2wo3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc93c612c3a0bff52ec1dabdf28b4777c6ae723ab5c620082f52e9de578517a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USLD91772859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d1c8799527ca1b13cd6cab132b840056d44661e2d4f6b5f54b182bb44b8c45. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USLD91772862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac40c02a3183a1b9f20b2fb585748f82e355d4dcf13d7a49f6a8cc2abb52c357. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USLD91777037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c24ee0efc16750c6b2ce860f054741dc714fe282d363f3771dd80ba85af2207. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USLD91777044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c19cc60a9a012a5be6d79dd54d7790ac0012bb6bf1828e34a6023297b1ab1c1. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USLD91777042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdb76b85c83bf2f161e5cfbdd66ddb7cb10ef51bf40d6644111dbcd5a7a6c0b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USLD91779241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaba0294ba7b17330d948d8cb75bde88405e23820bcc0e14283db9586b41362. 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/USLD91784028.