Krezip is a Dutch pop rock band from Tilburg, North Brabant, formed in 1997. The band was formed while its members were in high school and has had four consistent core members, centered around lead si
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 0x5928e166f9a708a42ada6ee540c046b9d8a0843a20f32ba4ae05d113365f2218. 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/b549c041-ba1a-4ee8-a917-f795ba7599d2.json and https://artists.proofprofile.net/proofs/artist/b549c041-ba1a-4ee8-a917-f795ba7599d2.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 0x8265b86acb909ee3d632b2a5c176359357c8244466f62d51d09bb74aa7f75960. 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/NLA800000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2798d8784bea9984260bef09aa6c43e68b91b953fd5abf6eb3a4849d1f0a79d2. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/NLA800000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcf487fa0ac820b8870df22a61c9d12711088f489fb43dac53161c2831597a2. 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/NLA800000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fa65fce49f7b99514e8b275d5b1a85085d85fe4e17595470b633ea6a4950a9. 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/NLA800000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d53a3895f5b9dbd772ecb8149fc62f9fe89774ca1024e361b06485047e1f0f. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/NLA800000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f88329c57065e3ae500c17743d59323fca79f278118db1dc74215142c75b3ea. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/NLA800000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc549cc7120b05660c5c4b966168e985aba458f450db039f9a456d3f7d23ecde. 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/NLA800200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0a73fc60e3ab4bf7a71615050e2f52eb34fb07a8ed0b844157aface583643b. 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/NLA800200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c08a478ac65e50da7400d5983cb8f9ff20fa839eaa4a37a2ef007638fc9379. 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/NLA200500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8761a2631f96ccf09e7f22748e071a6b6111c131182b1162c4e08b6ddb0654a. Chain 2 (Bitcoin): anchored in block 957895 (2026-07-13T18:41:29Z), 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/NLA200500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2028c577997db6e07bc4db215965bf98b93f441275e68af88f3049130368ae4f. 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/NLA200500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0560dcbabfc822320aec4e488f0b0ffea4489c91dec4be27d59481012d7dce. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLP760700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32206f8599bfe527135cf7bf99476f57fe32569cdb4d4e2a4561ebba7c9414b4. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/NLP760700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1ce385b3e3f5b37e2e0aec18e8d8453291ba28e41a558b6764bc3978facbf3. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/NLP760700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd0104d48060fc5055da0b12a72631f399e63358bda0549c90bb8398583375f. 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/NLP760800004.
Look What You've Done - excl.demo recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf24d961a703ff1861a252884594deaa4a5574e7f3374a6df6a680718aa90720. 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/NLP760800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791b9c395e1c99bdc06f4b2778b4d338aa4e5a12f1c5ee030d0250f5b089205e. 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/NLP760700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde26bebc64e437f2990813c3d8eee05b23762f4bba1f81fff81c96d4f194b98c. 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/NLA800000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040f7905530dce9b2697f7392c0f1f8ccea848632a4d2d2add9b89577cde02d8. 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/NLFG80800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ea24e836e625aa948b2656f40cf1bc78f091ba3345a30e21b9f992871482e7. 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/NLP760800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acbf5297b020783184754b0c3b03fa4e7637c9c53a0a20cff4ed58d5005c983. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/NLP760800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1946026e0b022b2ddf6a27504484c7c165071c9e1fcc128d4d8bdb6fe9a9d876. 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/NLP760900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563695350cc67ecaac2180aaab7e7d4a93cf351c162bf7d9adbfbded953ee82c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLP760900143.
Waiting By The Phone - Live @ HMH - 27Jun09
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083175d81119f67d0eb66881823e5974982c70bed9e368ba34d8c2fb8c097d20. 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/NLP760900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29607bd2b7c7281dcefbc81a1bc9994a02e8a7004c6c0b2900ad9558ae7a322. 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/NLP760900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc228beaa63392eb8197b82eb235cb63b416279487b0327ebd6a6651befcba67c. 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/NL1HW1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b694f8cac7a594eda974dda381f811a28ae368b702aaefedda54613c9318e76. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/NL1HW1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919791937edfba01f570a37fe96f9b209290efc17c10a3962517d9cae7d5273a. 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/NL1HW1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90aed2d985ea57bf866ce43d0b8f19ada7b8fddc6fdd6f71c449d99dfeacff3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NL1HW1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a918658372b13d7ddc3c542b1ecf0e7d00b6552b5bfc7fff7702c2a019dcd30. 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/NLUM72200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a8c8217e77c09748baa8a295e8a423cc1db6c23acb84b1e7f9a4e14853ac70. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLUM72200112.
It All Means Nothing (You're Not Here Now)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33548a577d361d03badd7591c21b6f7188d142acaff81d2c4b68ea5ddc8c245. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLF710500554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791b9c395e1c99bdc06f4b2778b4d338aa4e5a12f1c5ee030d0250f5b089205e. 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/NLP760700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c0a4cbc447e7652db6f00f9dd7886ea4e3ab4ec928ae5f00e5607ee0551164. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/NLF711405805.