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 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 0x6802e75743011149ae664191ce775289911b82238deffd1a83173e37e81e07e5. 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/874601cd-a9ba-4152-91e9-a2e06a1bb335.json and https://artists.proofprofile.net/proofs/artist/874601cd-a9ba-4152-91e9-a2e06a1bb335.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 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 0x01e3beae8426b219b9abff46eb572625b267e2e1198ff094351a1d628ce44ecc. 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/QZHN42516972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd811c3f839496685aefcd6539176ac40cbf4b11d1285d3b4733b7f3b4ce5c6b2. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZHN42516975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9812303d33b3dea27080a36328d356054d0a5a8ba1644f76643f0b89ca0e81f. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/QZHN42516976.
It's My Music And I Get To Make The Rules
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8976123cd2778b3373ab29dd3cccb2fb1b808bffcbc9be48a6698981c2db927. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZHN42516977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f566194b30a4ffe705bb102e2f2018da7436049c7d742e5b3b3508b98a5e07. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZHN62597193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a11d23ab6d8e40c17e2b91dad1137fa316c46ce97ec233e7fe82c6f41dfb3d. 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/QZHN62597194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dde993b19c1b34298383655f936ce84273a5a8c30eae3dabd81f4ba2bcbb3f6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZHN62597196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95003cfd7392a8b104e04682e90f56f25eb200e0734b71ac542827fdfa231c3c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN62597198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5acc58386a4ac738e5590a62489cbff806deca0cb0ced5d9eee8e92aa0ed51. 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/QZHN62597199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a03f7bb9abda156ae62a7014ffa0f8c6554a35572e07f03798b1dd447d2105. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZHN52517008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ec213466b369d7364a3240402ef82fdf33be0255368d2f255aa24013a903c4. 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/QZHN52517009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3077745840711a9d18de5c98fa8778344cab6a3681b450d286dc53ff2bc874. 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/QZHN52517010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc135b5a3dc4b4cb11f496023c79f8b41a07332abdbb64a063bcb4cbb27342a15. 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/QZHN52517011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d1a86cc602eaf5a4dabc0b4d800f002aed42a1a758b84f43e9e4c2f15a2b58. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN52517012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf3c80c06e0e10a6ce332c589dbcdf2e054bcd39e09ca468efbca7b5e855961. 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/QZHN62597215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706b89af2a7211aa7187325755fb520ee1afb32ffb2e3e21edbabcf4ca9d4416. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZK6N2590664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9170f949a053f3da2eaff4f91ae2f78633fc8fead5df3b2c2fdd4061f204c45. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZK6N2590666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5018995455107183ace459ced102ad54a9d9da3cb0e31c13cc7fac4309c578a8. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZK6N2590670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6066c525920e8b903ac94c361a6e90b8558df31b39461e1ee0812c21907bd69c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZK6N2590672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc704edbe29d3021ee0f228038ae951e3465554ab352e32392208c5dbdd793ee. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZK6N2590673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a6ddac36f8867a0a6d5e63c5d3dc56db36f2dce5bba5177e4fc4b5f5bd5ea5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZK6N2590674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3506a3bb0fa4f65b3fdbd0c6dd6863f432ed36e47a19009e2753f0ff4fcfe2d2. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZK6N2590675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b169c1e835ba2b20f560ee5c099244dbaa52205cca27e5549230012d6a7c74. 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/QZK6N2590676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4bb93d7c31054e0bbadf5403ab013758b4675bb9c234dbdbdcb99ad71e05ee. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZNWT2577605.
I Just Hope You Tell Me When You Change Your Mind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8985d20495ca299ff4126c4df2f13ea4dff8f2eaf3d2aa4220057227eb3fda5. 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/QT3EX2549847.
I'm Gonna Die Alone In My Room Very Soon At This Pace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0df11552b6a8aead68e7cc0dfb39d21923ec37120bd94f2a2bca249b7a5227. 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/QT3EX2546678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bffa9c74e532b179b99341901c9bea7e48debe4e8976eccb8776a4c6a2701f. 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/AEA2L2194597.