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 0x4f0bdec87f1768b7cd255d8b5cbeb6deca57df73d4196f1c0f6a2d7c2fbea30f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0d92c4c-040b-4f7b-b5a6-ab4463a9cbc2.json and https://artists.proofprofile.net/proofs/artist/e0d92c4c-040b-4f7b-b5a6-ab4463a9cbc2.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 0x8b96f4f8a9c4c24541bd367d7632265889d4ee152311cf977f05f2c8f80d0e28. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DEVP82531244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49a9edce46c51c76174f57a3030e8d0de68beea3b0be1f3261a6a8c603bebfc. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/DEVP82531245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc823d2f6c746dd67e0d9552f9a022aac5d7b3d113cf2c5daa10f934351198113. 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/DEVP82531246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b354c70b4616f9debc3cdcb37dd43d2f21a3fd00be2f4ca2fbfb148e4121f7a. 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/DEVP82531247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab6f84647ccd2b542dbf01388acc3fd3a5eb839a5a03c98be63e42bb5676b4d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEVP82531248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7030379e0d6a0a12a479ee77ae98b379b69567d3708b68c5eee5a22452b75a. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DEVP82531249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1ad4008b93417f628ab8c7f0fa6a50765596ab31eb27af4c15307049f1ce09. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEVP82531250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab461dcd1cbd660869247f9169524cb3f8f315d183cd334e14693ddfc1b6d96. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:35:06Z), 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/DEVP82531251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0323437908cc763c0d045fac6c1c97ee332ff811dd33a5ccf119fafd034e60. 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/DEVP82531252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2a150fa3ef0aed273243f2701ea3715258a2342bbc09823cc92a2383fdac48. 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/DEVP82531253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0da3294a3fc01a5ffc4a19931f2b3c9dcbe3c8227d16fada491009313b7b65. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DEVP82531254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be2c4692659ec1bd939bc58664da67617883e00f2d52a31f31c3b2e2344575d. 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/DEVP82531255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef91816edf78324db74179037075dae87d213d32bce238551ea68c6e8ca96b4e. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/DEVP82531256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac143370a88f3a198f561347ce749eadfe89b5848f7dc62970803174df1249f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:23:19Z), 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/DEVP82531257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0878798fa8b9312764115a5685d42d14e4e616bd40cb683ab8371f91f59ff4d0. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/DEVP82531259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe755c1238b87226aad2655985c445db0a9877f1e3692796d1592b29d1b1976e. 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/DEVP82531263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62404d16d6d2225ad8c387c8c01711a66714cf8429a237e90b7b29b1495bd38c. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:25:51Z), 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/DEVP82531264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0534e463ffc7bc046fa01af42ec6d5669102062b7ed4554f3f2ab31228cbdd. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEVP82531269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4245837c0bda83f3809dffce1319d36d32c9a384594d5b3e6c1ed0328f1d4537. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEVP82531270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029a170e9eccb14c67ae831078c1392afed0ab8609d7ac1f1877f576ff6bdbd0. 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/DEVP82531272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0933432cd0751b3680e44c3d895982370fd9cf2a361bfd88ed08e7874a27ad. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:49:25Z), 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/DEVP82531274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7375bcc83a997f3dc1ccc7333367ea6cce28b66b35c4deed343c73955d3a6dae. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEVP82531276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe326957dc6e3e5f4a1d4ed9e3a401260ba6f3b503533149391ecdc1fb7fe3cc1. 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/DEVP82531277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc94a5d4873f8a5be6afdc6ecb2a4ced545bb611541b3a2babe983e9c59d92b. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:45:25Z), 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/DEVP82531278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15449844eef7db1875f0c9ff9698a0aefc23b22450f9822333352b476e37114. 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/DEVP82531281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd077aab25d86e035baef4fdf22394e77f2a4b01c7d0e5cff0bfa5f2ee722875e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEVP82531282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db9d18ce71788aa620c7d51dd7d985e7d9049515154e05f9b45d7f1317a860b. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:57:43Z), 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/DEVP82531283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b226965066dd96c2f2d6e3ad9a24d562cf8033913ba8fb25e7feafe15a4f76b. 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/DEVP82531284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2617c0722ece9f8baa613a641b97272f8f9ec8aa2bb6b4d063dea867ebfa3fdd. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DEVP82531287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642968fdd71d94da051e0ff45f3716762293b970c3617db6f5578b6e05824425. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:05:14Z), 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/DEVP82531289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfe1472ea991929178938b18c865c4b34f00dde819475c5f52175c83304645f. 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/DEVP82531290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9861bdb77a5496a677018a2685b5ac1f80a3c7a14c8a42fa894139bade71b6c1. 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/DEVP82531291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbd8df2373b0f72c464315069ea7aece3fd6fece273d2c0a52530237a770f1b. 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/DEVP82531292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c0f9c4cf9a5aaec4c875849d3d24c9462ac03193df1a838ec883a4197ba747. 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/DEVP82531294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2306026c0e5236dd38e9f9f97b02c62821da821f605c58a6572f3daaef100422. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:38:11Z), 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/DEVP82531296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3729e54a885278684047adea73eb7a139501642c3914b47e0de925536ee5efdb. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEVP82531298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe92d4625f1ca2cba376e7ad6bb646639aea33a6fc4baa676e8caf222add10a. 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/DEVP82531299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d052cb2c0d70a795db1bcbc6f0d082506e66bd6d1ce522d4599bf2a1825126. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEVP82531300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4920c1e4d31515eb6bcfbeb9320daa8b43a60394c3cfa53b16a628659ca42e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DEVP82531302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2b2328fa6f1e00bd95fc9a8bacd9b0a991e93c4894289191bdfd7bd9edd954. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:50:17Z), 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/DEVP82531307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4afdfbe50eb00b19e4d7bc6bcd8a8d43a14e172a4b9e5b0a047d3517745730. 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/DEVP82531308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d1529d8050205f861c91a322e4e8f3e6e6360cc47673b6ae2e806e7cdade92. 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/DEVP82531309.