Matheu may refer to: People Domingo Matheu, Argentine politician Joan Clos i Matheu, mayor of Barcelona, Spain from 1997 to 2006 Manuel de Falla, Spanish composer of classical music, full name "Ma
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 0x232a758866676bc18e827d8006a5722764020bf5ea51e1fe40721d5b5213331e. 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/72e7c3c2-6040-4bdc-888d-500676fac4ed.json and https://artists.proofprofile.net/proofs/artist/72e7c3c2-6040-4bdc-888d-500676fac4ed.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 0xeda137f49bfcc60922c1a39890d87b24b1323652044366097cfdbfb6433052ae. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLNM31900200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72458b3db26a43e95c89e6365a2b77ed126db9b8aced4bad73ad63631d71ffe4. 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/NLNM31900700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5721725aa528bdcc8c6c736e11c77428bfdfc68f614184abb28c6cae9723d100. 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/NLNM32000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f150921ea9551c007284811e0f1b140d091054f19163ace627fdb7b40ac417. 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/NLS242000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f52aa0897835c99a88cb97fb9686b871621c8f8725c596a41f5c7ed917ab42. 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/NLPH92000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272df0eca2b1cd97f4a55eafa38844a8465849bd5b703e10311aa9fd7366a4fb. 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/NLPH92000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a09af4564474cde3a200b67d4f1b3c63a5e6ece8236c06ce61b955343f31f9. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/NLPH92000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc3a8d2413e447312d6bb8f4b1605a98cf808b43c059c9cfe2682a077419e76. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/NLPH92000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c93bb0a5f5f2c21e2a4f4dd120470ab29403b5c254a7f236cdc00f56d72d32b. 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/NLPH92100001.
Als jij weer bij me bent (De Zomer van Zoë)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4578a9d8f3f720a5fc6e61cf9d2c7e5a312490426a88d81f45d6a9fc1da371ad. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLNM32100600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebbe607ec885c644f5dd524376ba62c56546ae0f46a5cf2dbbb14faa87eeea2. 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/NLPH92100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd833407dd3398dc2df048ece15b3e2fd0be9821d5a8ac31c9442eb70b8160c79. 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/NLPH92100014.
Voor Even Stil (De Piraten Van Hiernaast 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c6ba45cf8780804ddfe2791d209762ef35771a41b547f0ee1bcec47679285e. 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/NLS242200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e84a5b64f0b76d27458b5a4150dcafb2ac837b3f5aea789526b394b16035dc. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/NLPH92200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a87a8550ca1e6a98b395a3c5eaaa7d5d43bf46e8eda777fe8116a93b5db1ba0. 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/NLA802400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2381467c15f3e767ef10a2e58353d2572c9ba83a34fc86ca19be0bb2b855e33. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/NLA802400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fcfa314e5baa37a2f896d968d09c59480128c938e7d52805d4cd17358c0671. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/NLA802400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa075811ff73f3df4a7ed56230e9621a21cbf3b1ff6577896b71872fb2e00c0d4. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/NLA802500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2381467c15f3e767ef10a2e58353d2572c9ba83a34fc86ca19be0bb2b855e33. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/NLA802400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fcfa314e5baa37a2f896d968d09c59480128c938e7d52805d4cd17358c0671. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/NLA802400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda137f49bfcc60922c1a39890d87b24b1323652044366097cfdbfb6433052ae. 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/NLNM31900200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40598214ffef6a695e418989a208bdb58c5ed8fc4476cc5a9c9baf9063363ba. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NLNM31901100.