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 0x87d0cccc3ecad617f1e3f52fa8c71318a063edd78bbeb3d481e7c740d22444b0. 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/e5fbf196-64fe-430f-9fb1-c6af9597c65c.json and https://artists.proofprofile.net/proofs/artist/e5fbf196-64fe-430f-9fb1-c6af9597c65c.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 0x4aa99f77afc6b389dd45a3a0a36969eea90ac354b12926c1dcdfe185a1cf8e3a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USHM91187688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8084f90c76cba87ebac14fa20aee56ce10c8163f68778fd961ca1fa4b88d802c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:35:50Z), 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/USHM91187689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5542cde7f45ec80fb8be15f66e0005eb10d356cfe779d1fae10a3029ac9c7cb6. 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/USHM91187690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a78d1d4e22274b92412019f040302c895d19d62cd7ee76be054d50e0b50ab5. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USHM91187692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42746d6f27c855a1c63ca28cadd2639505931b9a056cbb4cb25e413a59d0bb1a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USHM91187697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302808b2f17d5fb601a9d67e59d08f9ad2f83cdbc66541c07b158275a0693e2e. 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/USHM91187699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e8797c198826d6c69250e29e9a783797a5018bc19e5f2a4c6f562267ed3ade. 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/USHM91187701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1b2e6e3c513b111808b89e5a9ab4224258387531a65bb6ca769478334b7320. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:51:52Z), 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/USHM91187702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcced821d21af7eb9bcb629319ccfec5acaa80e7d4a7d3710c1c9b97a3d5732ee. 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/USHM91187687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8084f90c76cba87ebac14fa20aee56ce10c8163f68778fd961ca1fa4b88d802c. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T16:00:07Z), 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/USHM91187689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5542cde7f45ec80fb8be15f66e0005eb10d356cfe779d1fae10a3029ac9c7cb6. 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/USHM91187690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a78d1d4e22274b92412019f040302c895d19d62cd7ee76be054d50e0b50ab5. 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/USHM91187692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42746d6f27c855a1c63ca28cadd2639505931b9a056cbb4cb25e413a59d0bb1a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USHM91187697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43e9329e361f3d38be10aa3fd78badae020d89be48f15f19a61a63146a93a4c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:26:14Z), 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/USHM91187698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302808b2f17d5fb601a9d67e59d08f9ad2f83cdbc66541c07b158275a0693e2e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM91187699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1b2e6e3c513b111808b89e5a9ab4224258387531a65bb6ca769478334b7320. 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/USHM91187702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad83a2e0e6f7af868b30e98bef0e828e3600efd6ee89bc1ef9bd92c7e79c1e1d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USHM91191863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248ea8c80bf9c3333d972b5813380996278dcc28e004d7540f5123453073640c. 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/USHM91191865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212fe55d62e328e1479aaf8536e4858ee4405a35efd63196118ff7bc38ef153b. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/USHM91191869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595c391c93a24929e1e7eb2e016e1fba78f7631094682a929df6d95f6db6ac72. 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/USHM91191873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad83a2e0e6f7af868b30e98bef0e828e3600efd6ee89bc1ef9bd92c7e79c1e1d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:45:08Z), 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/USHM91191863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248ea8c80bf9c3333d972b5813380996278dcc28e004d7540f5123453073640c. 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/USHM91191865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe864861a23c49c2dfee2ecebac1e77acf51ad7aaa6e59e6258aaa5eabcb0aa. 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/USHM91191866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212fe55d62e328e1479aaf8536e4858ee4405a35efd63196118ff7bc38ef153b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:59:18Z), 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/USHM91191869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb1275f45e81d29c2c1ac3eff7e6490495cb9aeac02426dacc8cf8e45f48e3d. 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/USCGH1286504.
Ook De Witten (Live Op De Paulusfeesten 2009)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b1efb84a03bbe806f52a4989e3b3d2663c70f61552cc180457cea5fb6c84c0. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USCGJ1212204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d15cbffafc17d94e56382518e83c3f9c39ec1b6653ea395abb9b0cc91eb2d2f. 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/USCGJ1212207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0f8becd35116abfb3453d5658c1155f1c086f5e43268a3f0dbd6060c3fe433. 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/USCGJ1212209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3927c7be9d0e7e3916e67e8bb949777e897151701576b0ce5dc2baa14178f6b9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGJ1212214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0f51f3e42d8d303e04973b947750eb6b13a44245c48ae8336338d7375ae61f. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/BEP011400269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd3bfb3a809262458d910b5dc39db2c44c19d93dedd20e15876630fb73668d9. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/BEP011400270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfb955e873862e41d9af72cf99f22201501678c4f8bf44fecfc4c52d1578460. 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/BEP011400271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69536d592b215e8c323a1cedfcd3b61db293796f3bb495b91ac3ca8106251cc. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BEP011400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dee2fbda252b5390075c607e3dbc333bdba1bd9c83595cf2d96cb99cd8c480. 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/BEP011400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65249866cd5acef8074e105b8618fa1aa7788ad3a9f04b89d9dc1bb05fe9ab0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BEP011400275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592c6774e04a6d44c83f53a994147bb56fb18ceb8d4ea3e661d274d4ba081647. 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/BEP011400277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe292fa65c807482dab6f477d713fb466d7cf921f3665deb97af81e1bc8901bd2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:06:54Z), 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/BEP011400278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30809f7014fd9d2fc4c24ff7a7a60360cd6ceb23780d6ec0db4e6e345678a4c7. 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/BEP011400280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c71470eddf5a89882cef446045eeb4da7402292ad81ea1de70d45983ed64088. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/BEP011400283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4253bbcd41ef8577d402ee75fa4c149a50b1cc5e09e20d627ddc9f4aad82508. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BEP011400284.