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 0xf69c2c5d1a69cb2f5eebfc7f7d1b01c76b5893290299280e3d62c49961ee88c6. 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/bd2f4b1d-1ef2-47d6-a484-6ce84fe5770d.json and https://artists.proofprofile.net/proofs/artist/bd2f4b1d-1ef2-47d6-a484-6ce84fe5770d.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 0xf4a961ed2372a2e943b8aefea67d09e02b452814dc87f65bd604fbc7b2111f21. 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/QZK6J2264498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd88af12c422a7420b4a0cfab930403e807c1c5ee4bcd04dee794ff32021e3f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:20:57Z), 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/QZK6M2221129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca4d370fe9ea7ef755ad453ac48599a5f28ae1a39518debe5cf2b210b560d3d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEQ2202073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506d0e45d0224b916520b099737ffe5443c17517b49c277597bd6695ff92b680. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZMEQ2202074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f56cb5a6a582fed7a7537a2e4607e6ec982f85afd6ff87b87b46b93fa2526f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZMEQ2202075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe334c32a089ef7854da2a198b74503c37a5b688eccb7bfcd5559f50b830840ff. 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/QZMEQ2202076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95529755772cb3dbf351f485d2a3c4946f99d9149931ec5eab598944e38f6119. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:33:52Z), 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/QZK6K2295413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f9bbf814b76f071e20e6a4c716c9c32a4fe62446ed6065ccfdae12ade8d713. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:51:29Z), 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/QZNWS2220578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c225784504d3be077c36dff377bfe3691d435e09d705461187ed7c1381c4d22. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTAS2243766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b095179013dbb758821ba8d6d0903e6d0aec38c2a013bc0b2f684a2728c1b5c. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QZFZ22377552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfb69c2f9029984babe4bddde70c8b56fdb178351a6121b91703ff3b7edbf7d. 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/QZNWU2329595.
Toujours Broke (feat. French Sounds Good)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a71ba8b256ffee0b2d1d75055d32321c017cc72efb6cb84d1a6e7e24ced3179. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTBB2385941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3169c404a332887887d07e173b5c5bffb0a13ebac824b905a480dd5450814160. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/FR9W12425139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be6a6fd31c768d8a3711d2dc771dde03dfff9d370c417aae9a324a5924ddf50. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZMEN2270254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ef25d0c0eba8a0f71ace53c95f1e80c3e6ffc56b67f12a89aa33dd4c26fe08. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWU2297074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06dfc258416a01fd26914af544f94abc6c138531609ba81d06559b448d8848c. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZTAX2241618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666dfc9eb8eda492d38a97612b0859fb75635913e09991db4140e364586734ea. 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/QZTB22277558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbf9cfd808e0cf88628b612ba96d38709a27dd860590882cac6d4f87ecb9239. 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/QZTBA2244136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe996544c25b91fdcdc27e57159a9f9e391ad1e5f0917a84065390b57dd2cb63f. 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/QZFYZ2365067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d6e854b2d72b6fa597a1129a3439f9fb332ddd717385a2bb92fad864ec037d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZFZ72353239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db672adfa67e95225029a6dd708e732e5238992fde1faec032df4f6098c99c6. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZK6M2393029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04bb99ac9b3daeaa29c3e881d94ae75ddefe8d4d0a1d205ee1fa32ad5c91fca. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZTAY2330792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d047b7a146c47a986191e545439d7c5d89d80ab5ab2d615b9c985e300d7f23. 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/FR9W12531642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba119bb5d6e08719950b07ec2019c44eccd2d1ea782ce1881b2304792d8efeba. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FR9W12549870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf7699d72f2c8b3dddeef5ac53120e0ad8ff3161b78b6b78edc6ec6523b983d. 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/FR9W12531637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66919e31bdd843331ade7d4e3febe5ff2d9d004e0fcdf2af37ba14e8ae1a714b. 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/FR9W12531638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af7bb6432c8bc9869c9bdce4376a3ea5d52e8a685136d90fb91fa0b47025792. 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/FR9W12531639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27a17c60619d79f91dadd74e5ae10cfbdab0a639921630644f1eb5f78ecb77b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR9W12531640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65c98493b3f986187d87aeef11df8aa56cd096284d82e4debc8f61559caca96. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR9W12531641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a69548bfcaccfc08b18f4f3546187cf06f4719565007733abc12095214f62d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FR9W12526362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b824e77cbb99a422791cb55453a2af1011e233fde954d438d385bc5cd9503ea. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:51Z), 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/FR9W12531635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178f8ce45314d6536138438549d3d386b72ac2339948cf0edd8f0f6475a24d67. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:04Z), 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/FR9W12531636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf7699d72f2c8b3dddeef5ac53120e0ad8ff3161b78b6b78edc6ec6523b983d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR9W12531637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66919e31bdd843331ade7d4e3febe5ff2d9d004e0fcdf2af37ba14e8ae1a714b. 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/FR9W12531638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af7bb6432c8bc9869c9bdce4376a3ea5d52e8a685136d90fb91fa0b47025792. 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/FR9W12531639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27a17c60619d79f91dadd74e5ae10cfbdab0a639921630644f1eb5f78ecb77b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR9W12531640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65c98493b3f986187d87aeef11df8aa56cd096284d82e4debc8f61559caca96. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR9W12531641.