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 0x2296f939d7fc7148b18097ab637376f87e4da5c7c66507e5e4cb4cb4fef08ac3. 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/dad0d593-d741-4ff9-932b-a426e620650b.json and https://artists.proofprofile.net/proofs/artist/dad0d593-d741-4ff9-932b-a426e620650b.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 0x2d85aa26dbd8f43fd5fd62dded67c425d06a4046b7343d3755b75904c5df9c41. 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/NLE870551201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc43769e2e77eb6c9aa563d88f4c01c5a8234971aa26eaaf6955cf3ccd2ea04. 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/NLE870551202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e31f5ab05587b985310495fb3004431cf57d9bffd2b9e5a50c9cbf12c4b7438. 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/NLE870703311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d972d6a296012b0dff233f163fa8d027c3daa518020d8c4bbbacdcd6f527df. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/NLE870873801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745cfcb46f358ad88801817228c539aee48e4392361df5222630f879948bcb71. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/NLE870874105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8792f4838d2c40601a523998d23d83724330d13cc68770298b3f31b2fa956431. 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/NLE870874108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cd5c9595ab7dff85d8ec630cbe9344c9849c9afaef2e4f7c1d101abf296b45. 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/NLE870873802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ea85bfbd1436a6a50b4d9d4262a0345c68a01754d7016f24879750abcab57e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:46:29Z), 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/NLE870874109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96aaa14a193ca976b0c6efe586a420c18709c5130b7a8a5ffd52f80f8abfa8a. 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/NLE871016702.
Ik Heb Je Sleutel Weggesmeten - Feest Versie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca915be8444d9fb99654792044ab7a899b703086692bd7de422f45b5ef0f4de2. 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/NLE871016705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad17692fe007ab7c5f6d6c96d5f5e46579f2abf1867ec2421b3420cfd669c09. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:46:06Z), 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/NLE871201008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2710912b8dcdfd8c605e45963f1c495b99db3c354e9d7ab1fa4ea185473b0270. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/NLE871201004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeac1b3ddb4cc7cdd80d5bd560007945603c62506f49d93b2cd5cfaddbab4d65. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLE871201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a688e812c0c86a4bbfd7cb7a867344284c2ddf35f22731b900a13bc6d8992a. 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/NLE871201011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57adfa8b21223a73799a7a6046492f1ddc1d652c92a137eb6643c84c329cd03. 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/NLA307800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd4b203025409f30a4c55fdb86436d6bfb3305f06321f35f54e4d2e97873944. 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/NLE871315501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afb089a119bc68fd92e6a0584f6cb6c1730ce7ffcddef22406ecb13858f2bbb. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:49:15Z), 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/NLE871314303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f951f9a06dc2b9fe15c84da463338aedec8da9718b88cdb2cd53c77b47f2f6. 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/NLE871314304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117743b11f5fb800caae20f0490858c07ea72c313ff44b2a4ac60ed2235fc5b6. 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/NLE871314305.
Waar Heb Ik Jou Ook Alweer Eerder Gezien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f033ef1772bfbdc547d9d0c269186ce0bf09684e24daaeab96448f304b06bd. 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/NLE871314306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362a8e6c03311de19d560273e7de66ac35bcdfa3fba4abb0b96c7d8c7ada36a0. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:20:58Z), 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/NLE871410801.
Waar Heb Ik Jou Ook Alweer Eerder Gezien (DJ Pollo Remix)
Waar Heb Ik Jou Ook Alweer Eerder Gezien - DJ Pollo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae93267e849f55f7903dd2947dc6ceca7b4edea6d04cf30152e13c6fa7d07bef. 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/NLE871444301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace3468c9932d3291cc700f038d256ce8d23bb52e2d71b7f126ca77adc00c4a0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:29:22Z), 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/NLE871536901.
Liever Te Dik In De Kist (DJ Maurice Remix)
Liever Te Dik In De Kist - Dj Maurice Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410677a7e831d50a96a001bb61ff1fba4a3c0c1f52de7e99bc801bfa8fd395dc. 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/NLE871615501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb6b4f14645ec8db348b99819070650def9c13fd6e7d6260b5a74c512fc8030. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/NLE870874102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f2594e292dfecf4350dd1dba713ed3461ab5a91d6ad280fa5de8a5c823ed75. 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/NLE870874106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84491c383ba1186126c78f697cf85f565a2d1ba739a65847cbf59f804c589496. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:21:43Z), 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/NLE871923400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ab5d963407800a6e48b40f49240b5e5a30fe0f677d164d5fe9100576bfc258. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/NLE871928000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf21d872b29df3fd0e8cb1ce7e442eb138e82c8a2b4f6c345e27deacd7aa9c23. 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/NLE871935000.
Liever Te Dik In De Kist (Altijd Larstig & Rob Gasd'rop Total Loss Remix)
Liever Te Dik In De Kist - Altijd Larstig & Rob Gasd'rop Total Loss Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd104862fbd54426917450c6a04ad3b4ff901d0664501bf1593b5af12e9cc0c82. 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/NLE872205501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4144577c2e3ee0af09862d9226f6bdb50564e4ac8f5ef6c2d0d50d10d499a430. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:22:44Z), 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/NLRZ82500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd104862fbd54426917450c6a04ad3b4ff901d0664501bf1593b5af12e9cc0c82. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLE872205501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36566a7f6562cd007dac00e2ff07c2b03cd14b47895e46844ddda1113750185. 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/NLE870639001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd624fc422f1fb35f493b69af6b10f16981fa9b9818253b844d8b82fe76aa7f9b. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:28:16Z), 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/NLE871940500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeff488afac569476f780837731d7113935518914d3f674082de9c600f630613. 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/NLE872148101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeff488afac569476f780837731d7113935518914d3f674082de9c600f630613. 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/NLE872148101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeff488afac569476f780837731d7113935518914d3f674082de9c600f630613. 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/NLE872148101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f16889d75ca4848335232d0023243138dc62fcba8ad2cf96be34eae5a06158. 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/NLE872308001.