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 0x4c9b0d9f750acfdd2a71d31e9816577a53637dc96c8bbd37f1c6a7911004b1ca. 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/e2f1d14e-22f3-49dd-a6f9-7db5a5effe4c.json and https://artists.proofprofile.net/proofs/artist/e2f1d14e-22f3-49dd-a6f9-7db5a5effe4c.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 0x90d6106504b27e1e19328bb363fe2044110476736ea0f70a0c6a42fb57a1fd8a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR0170500219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf3050f1247b7da2925e9c619352ced4336d603b824b282f2f8fd71afb3d79b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TR0170500220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a44a3a610a57142c80b5ed5d0abc515cbc1e17843ee799858bde59900d14e9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR0170500221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9a50d7c4ab71dbaaf3e9e4baeaa9a7db4f8b67c02cdc8b6ddb0e9e0676246d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TR0170500222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6682733fd80606458c785ceade5c3eaecf52f304de5b47f55ae6ab614d413342. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TR0170500223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8aaa1df7593a587bfef907f8c9dccb08f55f0a383324a225a3e29fca25eb15. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TR0170500224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c88825d959e5f04cbd70bd0357a3386058bfdbe730e357c507f33d83ce709d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TR0170500225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffec14494ce8dd1ef01cd60eeec49aefd07126daf3178d3404796d5c96432cd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR0170500226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78df03e117d029716076e8ad731ea819d23b9d0a554ba56d9090f6d88fdb158b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR0170500218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0a954b16dcbeb0958ec9cb65960b7f8a3cec0145d2ae1d8d9024b207d543dd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TR0170500227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd340761b280ed881030ff5dc9bc53b6d030e6bb5e0177424e3ab2373d5ade6de. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR0170500228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a38f9c6408115865008a999559fe60c7259d43a333c85ffb207c3d4b0f9021. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TR0170500234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8439414547c764563ebc2c48c486e09dc3b0946f76139ae00c23a8da91d8d74d. 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/TR0170500240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e2f0ca1b9efce94907a2dc840c67cf46de39cadf1c94c1bb02c6e0a4fe684d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TR0170500230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f69327fdcf4086492142915369de3eba16d2d223cc75413a2b77209aa088e8. 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/TR0170500237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dc1b329d905e572281855ca16db96aa0633b18b0ea290c0d36a48e950a6f1f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TR0170500235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe701a150cd282cc2b1e54c86965853efb681c15f098930201fff4202a7c50275. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:04:00Z), 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/TR0170500242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6180005abcaca6e8e9d8ec2940d8d2817a61473551a15603d4ea74863323a8be. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TR0170500231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cbd454097c66cbab44e923ef60054aae74c185ad372ddfc3a1f2ad32654079. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:23:33Z), 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/FR6V81931906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afd4bfc264ea920b213ee1824370b3eff2cccaa6192b8ec2ecb388769fbbce9. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FR6V81931908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202aea3af3b0a84dd9cdf55b6ba8be343873240eed851a1f34506facec7116cd. 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/FR6V81931909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0354efaa54ee2b274252f0c7fc4c705da95652b32da72bc42f4faf647bbf4267. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR6V81931910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efcd44b627d9426a3fd4a1c363e9f51bb3b884360c802fd71b897e27a750589. 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/FR6V81931914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d3bf28085c9bdea84b5311f4aadc54526c7f002d32c7266d5acbac11fd9128. 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/FR6V81931915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843c2a0e934c652fe3b39185cf23fec43ca58eb7bdbb87075440c4d439e1e1ed. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:43:16Z), 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/FR6V81931918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20451e9dd09a5c86a402c9be38f326638cf8c3e29800f8a409eb0e3bc6169ee. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:55Z), 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/FR6V81931919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62bb3f18760f593d3ef7d41b1d2eb025dc292424a73244a54b3caa0dd6e5161. 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/FR6V81931920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6aadaf4cf9e12be4904c38f66f06274920fa4db31df91c880adf1bccc316e3. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:04:17Z), 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/FR6V81931921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41cf105bf1018fa93833ada0870d22f65f2af3d3bb705bb12040ad69420ec54. 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/TR0151300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf26ff4329726626c3d6643219dcc79d29e67998ec8189387c8fd604426af52e. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TR0151300187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753fa85cb68a1187cd48d50ea0c0f840eae398114309c31405e371ba6e8bc3c5. 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/TR0151300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77d199d6fc8b17083cbc57ca425289af25b7d86404dd2be4fc580311fe0b0d5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:08:28Z), 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/TR0151300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199bde8b160c8364ff15212fc703a35380af674706cd6fa8aa46b3edafa5e772. 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/TR0151300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1267af43252d49275fa14cc9c5402fc77e0c47e369c594093ed08eb98371a970. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TR0151300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9a0e8e1f7981c7a82210319a28d856db21cd196c0a05a162bebe538614c55a. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:51:57Z), 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/TR0151300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4ee925df69374f67b8ce4689238baae5976d093834a2c006b1e4aac44ab44e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TR0151300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0104b0a3b2e36723a11dcba9fe96e3dd4cbdc2292aea84b69a13004c34e0594d. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/TR0151300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9f323887b7d5c9e653039d4754b0cc70f1ff2ff6cc17d28405b3495ec17236. 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/QMFMF2353338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af7d2ae683ca114b12040620f607de8943c0363f75b2a4082e2cf993409a319. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:30:16Z), 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/TR3881800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334970f15fb94407689f8b492ed0fc857b59290db0bb4a31130852fa4e4351e3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TRADP1900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e43b0b162918cc641f37caa483c9398ed77bbf20a5b6b8a49e06388bdfbfe6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TR0331409885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e5d67138fb5a456ae8da51083664faea116b64436afb11da9ebc12d361763a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TR2201204784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2169a40c6b1b13fd3604114adb6ee2391328a321ca21dc78093dda3588ec5ad. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TR0331811251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1e19135e8ebe59bad8f6f0697b42c159ab063a065e94fa9f2158405d691017. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TR0361300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec7aca4db86f85707bf12896badaeb949e690e2af6c443b2a7042d486d97c2a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TR0331510017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3721c7e1194cca771426fd5165aecf5a41b07718479625cfc69cdcfe6f9bd0cb. 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/TR0331510020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93be0d5ad2527dfbcf3dadd572bd98871d45f257a74001a5999804ea9b07ddf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TR1592003915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71daab2d324b9e0f7804b013a08cef89736d7d76f6186a6c679aeea1e92cd831. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TR0332212796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34207f636c46bc022e8bff365868d98bf5099d9717bd6b3ddf5f909b7777167d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TR0361900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d494b160aa049ab7ee9035b7986f8027b97d2ec6cc03add530c1486fe8220a9. 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/TRARD1500311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1e19135e8ebe59bad8f6f0697b42c159ab063a065e94fa9f2158405d691017. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/TR0361300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc37ff31fb80d09ef229421a1d99211c9c30de12a088a69d51166699031fdd1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TRAOI1500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149078f935d51454a80acadb7012b2304b1ad17d99d3475396eefbccbc73a774. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR0330603766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14674f2bfe9e4a1dea5d232eaab062d0638d08ec645d4b1a9405373ab0492f44. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TR0361500044.
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 0xab2ccf2f249d3fb44245e039c8a221b2a624f085c1dd0aaf29676be1592bd4d3. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FR59R1820544.