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 0x651fb22a3f427d8bfa82d258cbf9863a451beb7b297727b549c7845e7d2d5869. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34367553-00ed-4e7f-94df-000da4790dbb.json and https://artists.proofprofile.net/proofs/artist/34367553-00ed-4e7f-94df-000da4790dbb.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 0x19b3170f91806f14cbcb6db14d8e965edb6f01e914e70824a826e6b11020275a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ZAA168900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d21cb96f621d8425dc0ce8e15115be3564a87feade7828fc2e997793bf5ac9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ZAA169000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882c387f7119c005da420dc6d9f38ff5b20e6e058a38e1f51fdca8f221c3431f. 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/ZAA169000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c1cb932ec57050da47529c5bf3992de8a92ecf7efdcc9a12ad5ef131ad6c34. 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/ZAA169000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901cba0e9b1840f5c93483eadd075bd8cb65cf97dd7ccd7497e647e1b6a11c44. 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/ZAA169000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1829a41f647af41e471a7821501b1d51e17a2c6f04efe540c63e260b7f737c1e. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:38:36Z), 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/ZAA169000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce81cbd970c34d80820ede876052d363ab4b816f7f4ba45513f31133b6e4bcf. 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/ZAA169000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee01f2640a2e8890cb3332ccbbe718d8996019cce40565adc706b2e56c98b989. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:32:17Z), 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/ZAA169100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd7d80ed5ea3a213015444c6a1dc177c95ea8875db50741c67ecad76c7350b1. 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/ZAA169100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e85d2c2e704a3b185788d1bdfd7446428e4c77728bba732572342db9741731. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ZAA169200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ad10609dffd7ee4d532b2e4dd0518eee525489d2715a6ec69fabcba74cedd7. 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/ZAA169200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc27eb49e7e49b8544d59c576e5f50ff71b8f2fe9a792de28942b0edd8cf14b4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ZAA169200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244a1b95875e7ea277abc493f026c96434ae382862289f4538c01236c5dcb225. 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/ZAA169200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53f83fd10ddec401a498b7c78c599dc862e9b3a11de94234cb797b719f3a947. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ZAA169300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49aa761c6ffede2e2fcdf0a751e12f95d9891615fe6cc668a64be3f153dff48. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ZAA169300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d26dd5c14cbb93ff19b79c85079b1453823e22c29bc195e188895e7aa1be12. 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/ZAA169300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ca8e89037802920d5cf7ca381defc6a63a300abc333155323e51f17153a5fa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ZAA169300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6985a0098c0199ce5da7743630525966f594cc495643e741f96c6f6a6516aa02. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:48:08Z), 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/ZAA169300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a35c4cba12e1279eb578c5b15e51b8b91ac63d6fcbb12f5d62a06f433fae9b. 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/ZAA169900384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410faca18148e0d39b9728d87b0374fdfd6f4f80a5ece2bce69bad46f1464392. 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/ZAA169900385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760e5fe2f9566557b48712ad4d332bfa5ebdebf937667d172dfdde9b15d5f410. 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/ZAA169900388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14f4e3379ab144455eb43766961e180b04c13e76fde13032388415cc43e2717. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:32:09Z), 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/ZAA169400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca8e0f3473c8b84cca6f30e96107aedf9d3b88b2b7b0f8a40b2e8c23d5e7b40. 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/ZAA169700413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd065f47e8cb7088bd6162d56eb12a1da3c791ab35a6720c699903d6a445c867. 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/ZAA169700415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf84f6613fe8d3425a00fd960ac5aff74fd3769f0bc7adf4d65e1980b810091d. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/ZAA169700417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90dbb39e3e181e96fe299c6cabda3c3443413f5e6ad34f3e0eb382362176d11. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/ZAA169700419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5cdef0aff3f64e0d2ed10984150877033b75e284e9848e475e986fa4986c1b. 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/ZAA169800243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff5805a2289c39e5035fe99c8db06dce080f64df6b493fcb36c3cfdfbc95f62. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:01:07Z), 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/ZAA169800245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317c06bafd50a23297899de098083332c13b0d336576f77ab1df2aa971e5cd11. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:06:38Z), 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/ZAA169800246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358998d071e30464059cd7802ca86da969498bd2346da2cd46b049d49a1a1b78. 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/ZAA169800250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c2b186e4272a7f446fd31f89e46fea3b59b5864a4689ea1154ce2fd7470211. 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/ZAA169800252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d201a43c18381f030800211b7f5e77ad9f9d645f85015b2cc7df606657a4fae. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ZAA169800627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e65983e0db090bf9dbdba25c99d262c4120aca009914a1ff259c5439b7eecc8. 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/ZAA160000266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21274e91e735a165839d0dda7920b5d96c5500874481a7b8bdb6de8b112c2db3. 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/ZAA160000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b815d6cadc6f73ae6f2327f3b129df372472cb88002c05092812d140efe876e. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/ZAA160000269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb97c7268a831cb01c9fccd41779c814d970b0cff09257e3dcc284bcd1637bff. 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/ZAA160000274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d305fe38b5e1ffe54253a16959ee73e1b390a1a533305f0100fcaf589b0ec95. 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/ZAA160000275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea082bd6f164d310dc80d3a1b8e6a889aaf9a0f9cbda18e6f113488c78ea5cdd. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/ZAA160200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bf516171335193d85570e7ec5884ee373ea3cd65533bde23bcbfcbe0b316a4. 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/ZAA160200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeccf5251275b522f1a4eaac3d6e23e5e3621648e1e91a1074da0742c40c06d4. 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/ZAA160200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a1b7147ab5594662ea081cf724047b79bcc0caa28014877159e269e5fdbee9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ZAA160200080.