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 0x1385fd83a9762b452194aeefbb3573054a5ca77daa2466cd9f92fbacdc9c77f0. 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/d4921ddf-ee25-4ebd-962f-ff79c64442a7.json and https://artists.proofprofile.net/proofs/artist/d4921ddf-ee25-4ebd-962f-ff79c64442a7.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 0x23bb1bb074c4837713fc9f9920970bc13c119a887e1eeedea79627213b63237f. 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/MX4971400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3f679827b6e2f0dd93c26546992033d0a453fb86bf6c3570692bbb45721ba5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:45Z), 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/MX4971400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd4f2555d4d1904c301432bef6eec068151ed0b208f56465fb98c90cc63d14b. 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/MX4971400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c4251d3c3421f58eb37d64b3bad14c0e1bdf72008cf2700e1001ea3bec5c2b. 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/MX4971400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252e6db968fa0e34a937749cbdb164696ad7a216c8fd93af1928a15e29976db9. 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/MX4971400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d5eb627b98d3f554752ad56d3f9b768145eef00bda9fe4785921c7af5bd819. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:13:11Z), 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/MX4971400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080332cea23666d7e0743e8d6e6db0518647e1d946bd267ef9838afb769a0325. 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/MX4971400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c03f1c5f10430740bc7783e62b8a4a84caa765035aabb4a299e06f74547ff7. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/MX4971400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29be3d5842f9c607a89fdfa2eb648127ea844cea8da27d6d0bbeb2b0ab4ca1e. 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/MX4971400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c27476a6eae349217997b9bd398711c0469df6ef45d83dbfa0618732572f58e. 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/MX4971400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f6f6008992ce54cc6164f125b0f5f79d438ec9a25da9de6a2efa07a25ba5cd. 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/MX4971400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184a9b9738c3c57e32be863f8bb12f3b740c38c87b1c94c04294780b1a11c970. 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/MX4971400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec27cdae46b9a4ac03a24f04ec5c2b4f61f46e6398023b48a8ac992736584e34. 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/MX4971400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df553f564673ec15f9cde528e582cb460a38f29ac91d3fcb723734df2639b45. 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/MX4971400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2615b4082517c04d5680b8de243065167f81e016d90fe87171127608aa1bd0. 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/MX4971400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a490afc15f2fe3ac0fac08451859005f4af6fbd017c9bf92bf35437f17f740. 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/MX4971400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa48abaad47fd2ebba9ed478b56e2cef0a5b038b00d8a5e71784cf2f0c829faf. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/MX4971400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f21271c5abf417dd6f4445a25720ad8c782c22dd4927387acea708e7e40ecc3. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:09:22Z), 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/MX4971400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c40e8edf747cfdf1de8b12fda70581c23f804aacb85cf5c609c4b6632d7a538. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:30:25Z), 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/MX4971400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3664e08bc1ad4d6e8e1657665f64831fbc2f02fb5af9bc98365bce457ed3d57b. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/MX4971400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67eaab65f160faf00cbf7610fd6ed56c0890ecfb86935048e908550cf21a6ff8. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/MX4971400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b65087946c690e130ad0811acd597c2ce5dccd6c52970244f9a4870161a7e62. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/MX4971400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65333eb8c5bd698b90c0ee203e23a23277cb343341473ee4e4c41d3ee328cca. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:47:56Z), 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/MX4971400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa072dec4f2ee96369c1f4a0649cb5ad1ecaf4894b216ce1e315f9f9985d1a3a4. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/MX4971400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b3251d232e6d71fc6edf1a4a5fcf103ab197831b1a6b925636961bdc98f9e4. 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/MX4971400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bed297e8415490f118713e48c7f2f450a20263560ed95ffa92b992cf707c77b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/MX4971400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c59ef7cf2fb0a782b1b513dd0414a7967443d266b7db6d430262d9c94f434f4. 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/MX4971400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc087787db26346641d812d1c5ad59e254b8517060176a89fd419bb1a788f4478. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:06:26Z), 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/MX4971400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dd7fa2f69d485079f8b3e6d93edb72ede9559f27ed6400c8bf2c5af11b479a. 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/MX4971400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2193d434243005beb123befb178ccaf05fcf13fc7db630c27329bb129981ee7a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:45:30Z), 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/MX4971400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab495f3ca76e6c99a18d9b67497aa578d27b2469aa8f2d997de4f23e2b5c781c. 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/MX4971400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7124140561e62ec0585ae6c8b45dc3796c10209e1394fd86eec02bd7b1edc5. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:00:17Z), 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/MX4971400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82c4f9042bc74a63e8e2d14ef27619d6834b7bfc87a3c40b9b379b72cac44e2. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:28:42Z), 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/MX4971400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64a886c781dc31a7b198b357f5677f95ec78e53e3f24b3bce17d9130d229a66. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/MX4971400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93b18218a34ab20f1921460bc4af6af7926c2e16b6c2749d06cfbfd9ace1219. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/MX4971400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb57692d5c1a3c79b7075343fe183ecaa2489267037cd995daffbef16fc515f3. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:56:31Z), 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/MX4971400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a04e8370b5f66870693c910b757674ba0fdf4c6f93086dde8e70ab47afe057. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/MX4971400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7240aefbb412300596a5aa972cd8febb10b43830d524e83ab3d25a8f5900d10. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/MX4971400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6696f8c39930f80f129a928f52758cdbf7102e5b41b6e34beb1f9652fd041176. 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/MX4971400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fcf7d17e58e15c23d18888dc711d36ee193c88a628775335b3cbbe32d1837e. 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/MX4971400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199ca1ab907c7ab5513fe9cad0298ab524446853c2af3a3f7e4f01e7448cf563. 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/MX4971400078.