thumb|Willem Vermandere Willem Vermandere (born 9 February 1940 in Lauwe, Belgium) is a Belgian singer, Flemish cabaret artist, writer, sculptor, guitarist and painter. His songs are written and sung
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 0x3554964d7ef016dfa4ca39aa7563227e615516f9852745a71bd90bceb1e3805a. 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/5ca0e75f-7d5e-49b3-b127-c25670a2823d.json and https://artists.proofprofile.net/proofs/artist/5ca0e75f-7d5e-49b3-b127-c25670a2823d.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 0x5001eefdb83eefd9d75e7096405da2617684b9b7b78f565292395a54c20b985b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/NLE321200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f7a9320f91b9114ca8367ffd277322201c5eb1383d13d4c2e6824f1cc13db4. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/NLE321802338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e06c914e51274c0c0341cda706fe20631048701c2d9f529d1f9b97a6b9408b4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/NLE321802345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eeb787902e366eca50053f84d4ea23f41f2e8d3232cbcd8b989a39606e2fbb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/NLE321802346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaff859426e7edf9ad471504ac297599d397874120b49f28f8f1163d5b8e37ef. 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/BEQ010300291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fc138c917db0792f1a1529aa73efa8ca275d9aba8f5067b6025fcee3e006b0. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/BEQ010300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d4e099568b7389dc6bb8a8712cac5cd2f269d46204ae01b57bf3d21de95c8e. 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/BEQ010300296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a3e5403c4acdd5f3fc6c895cb954e362b82a92ba9680af5d8573c80e866b37. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:30:03Z), 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/BEQ010300297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebfa4b8af247aaa463b5c1cf728d1b77a87b655642a23b76d7415d380c4250e. 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/BEQ010300298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3651f5421b4aff7b484cbbda7410dadbebfe401f2a1c209448e06a91740e4e. 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/BEQ029300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4f109f124f2fd3e52e38ba1d77ab4d1d2b6d1351073120e389fff3355f68f4. 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/BEQ029500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb26d52b6ca775ad0efd6a432331cea4cdbb191b35d36b57a6fc414be86572d. 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/BEQ019900121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea1f04aa0c7a9ad873643a0007c946a51a5a242b3c9c3bd844094380ab7e636. 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/BEQ019900123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b614afedab4a1daee4233b888fa3b1ce8ecfc5cb5db9abd0144b9fab137b61f. 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/BEQ019900128.
Gezangen Uit De Ark (De Weemoedige Liedjes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0636567c79470d9c3490135dfbbc88f222b3f6e1f982b933737e163c00f73385. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BEQ010200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6211d475bda45d25f772b0130c654e629ddc07513fd2bca18c7f7571709bcafc. 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/BEQ010200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a2db32dc5f02c079065e54c2152b90fbd34f209fb4da5a358611e16f934f63. 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/BEQ010100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058382d0e7420c65ea8d16632e6d3a5eaabd0941063cc7dc31a2da2a8a26d00a. 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/BEQ010200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f9782f9b38ef9fe1b946d8f5a8c84dee65882eca7c267fd284effcf137d385. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:11:22Z), 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/BEQ010200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0201763e22966c93798cd047b56cfcfdc00210a473c5362032cc1fe7f5e50874. 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/BEQ010200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0fda7a344a5c27a7e31005bbcaf41c2cff5bd6d2d48507bc5d0efee17d57ac. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:00:41Z), 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/BEQ010300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ce29b9c0d5031e6ae8e8dc3f7cfac1de7e373838b2395d5772b1e1a70b2ad9. 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/BEQ029500009.
Altijd Iemands Vader Altijd Iemands Kind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc693f4b3950c019d3b9032ca22b5151fe8ea5f0549311b34b109c242380a9f3d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BEUM70900495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575d284b959e25e864ba1b593024576d40ebe1e927604b1a940ada4384afdd70. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BEUM70900500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95d29d15ee2f06092a524aee52668dcc6692853f04e39dba135761059b054dc. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:43:19Z), 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/BEUM71200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54e504005b27d637afc1f6e4749b58b66a5fe11b07a4b6e92e10db684252730. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/BEQ028100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3651f5421b4aff7b484cbbda7410dadbebfe401f2a1c209448e06a91740e4e. 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/BEQ029300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2201186c50aef3db4fdfa66ef172c0b1f31ce3be61df7262f511f49b4e69a1af. 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/BEQ010000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf033f0bb22fa6e71d70ae13df84dee34486e2a9cac0884a5aa8355e10280653a. 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/BEQ028100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90e5326f2818dca7100817707153861c1735576ce38ff1561e9d45306235ac7. 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/BEUM70900501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4925ed8e202d0b52b9abcf440746089af64e995e32e7051390e8b4e39056c165. 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/BEQ028400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2845ae5d69fa630452fcf8539f0813ac5fd5f1abd223bab702c951080709835. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BEQ028800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4adcb09a5d3ad22f85e79435dd396c4cf63873d570b44dbc01fd9cc72723f32. 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/BEUM70600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d321f33d15c8c21c5183d2001d949dea1a7ded0f4cd81af85e779fa1d32b5a7. 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/BEUM71500184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1b677c163465d5d3b19e79cedc35eb99077052c0939ea9db1a37135866eefc. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/BEUM71500198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fc46bb9d19af9d399381533cfe6673361f6fbfddd37e38bf0ea377b36c8d24. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/BEQ282000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dcbff06a35b6cd547c9bb4390167ffaf53dc81d2b6ee67ac73f332178ec57e. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/BEQ282000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abc1d2715ca88987af2d9b284c8178c20aa5b80617c0cfd04d8631d868020b0. 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/BEQ282000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368d9b33dd1109bfb8617a14d0184d099c00ea8f448efff64e34d1beae1f79e1. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:40:31Z), 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/BEQ282000010.