Brandhärd is a hip hop group from Basel-Country in Switzerland. It is best known in the German-speaking parts of Switzerland. History The three friends Johny Holiday, Fetch and Fierce founded Brandhä
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 0x3b25faad12633f0779574992129acfb9579c638b075fc66c6f1f9efaa57c36c1. 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/f4ffb6e4-2828-4b33-984f-f78f4c9572bd.json and https://artists.proofprofile.net/proofs/artist/f4ffb6e4-2828-4b33-984f-f78f4c9572bd.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 0x2b94e5edae335577cb3c16e39bf3774fee7e33e1c26cd53c66cc9df839613066. 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/CH6540806772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6801613ae336bd7df605264421a7ee1d4ca1737dd5562a4fe8bc7f8ad0532147. 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/CH6540806773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd427fc895ba15aeb4cdaf8fd176d4417383f29b6962f7eee9d02ab0e8ba94a4e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH2180500076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cee84697b9a2f498e0460657249445513b994b004c75603b8b2be8fbdf8690. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/CH2180500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdd3b1c56792ba943e6f0587e5c16605d2a9427d4ae168381d90b6a56632795. 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/CH2180700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ddd4a6a1e7679abe259d23acbaf64d8886aaff42acf79ee459b1a08c913296. 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/CH2180700203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6748b0a54d3542165c0ab96e4008d45935ec5025a35998ed177416ef297cd900. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:10:03Z), 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/CH2180700205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcb4768f2ee3b10857cc0bc0338c0eec8f0ea730969698429c50f402b9a3ef9. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/CH2180700209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb931f2e985e78111b89f8a2ac3b73b17f6f4595820266d6138885a373fa12f2. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/CH2180700219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499fd5e040f68775a9d7e2ba418cb2da30515e9c197b2031244e5cffc391acc1. 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/CH2181000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1174eb92e9534a9b782dfb4b2eaf4ef7aef21c78ed59559abeab5b2b4441b58. 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/CH2181000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d1d5da32eb74f216be759ad02d1015b899ed4514d5572ec263baa9ce9417e3. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/CH2181000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfa7f219387dd9e7bb967c01d45e216fe95f2c6d4e18b6549f29e199509a08e. 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/CH2181000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352d4ae487548f4c9f5d32e1b88b9f23ab8f0a231442424dcdbbc594196da67d. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/CH2881500300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4002e2d5d1b8df5fc304b84fff7d0fe19d304cf72b5dc1b49a697ee3dd8f3b. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/CH6541610233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea3b36327e79bd8fe79786169493c3c9594769b005bcfab7182c7d3f8e2b968. 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/CH8091800556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf39aeb85e70e30001e7845638cbd2ea145f5c7eadcc1d949b2f6dfd7253702f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/CH8092202024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea99bb097fe12414eefa0ad439212f0524e5cee36f2b6af07ce2f4cc5993e25e. 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/CH8092202095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14f881a7cfbb9f7f0891fba96fecb61f48d66b52e3e06953d5b0fa3fdc193d0. 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/CH8092202096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf39aeb85e70e30001e7845638cbd2ea145f5c7eadcc1d949b2f6dfd7253702f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CH8092202024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3dab6bdec7ee88a49c5402ccd32ae2cd3fc50a236ef73d7728ac31ba93143a. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/CH8092202097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c105d0f81bc315c3e4022cfb82b5cab963891a5458a3f95f2eaf798503e64d5. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/CH8092202076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8df2f3f7239db16be18d5ad3b21cde6e3b5b4b5ceafed1caec9e01b1da4d97f. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:37:45Z), 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/CH8092202098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e341294937c0f76ef9847a9725d9e41c76a33a908dfd078443eb0ef753c7fa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CH8092502565.