Holly Wasserfall (born 27 December 1996), professionally known as Holly Rey, is a South African singer and songwriter. Her musical career began at the age of 14, signing her first publishing deal with
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 0xbb73533339a40d2a97767d0c22986b4d6f062bebe57d28d940ded05bed97c0ea. 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/808015b6-caef-4c40-9240-c71e6449aa6a.json and https://artists.proofprofile.net/proofs/artist/808015b6-caef-4c40-9240-c71e6449aa6a.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 0x0f0fbb305284c7b66192fc89b7c86fac802beb26fb286837ee734a156d7d1486. 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/ZAZ012100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbefe2ea8848d78c2b0f91888b1078d65c95a89632cc942a926b9e686b579020. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ZAZ012100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9335492b0f8d92ff8cb1e5a9e01601a3bca4b411036871c84ef6771a594d4345. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ZAZ012100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b35dc772d939d113fcae037aa1bbe3a8d31f56219fb5d113a450227336abfd. 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/ZAZ012100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18466a747cfd326b819383f7ab38d615107b5e12df937d32d92de0074422827. 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/ZAZ012300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da07930324298ae4b1f01cdf01d760651035828bfb3b99617af5fb46ae9e4dc. 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/ZAZ012300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73628b51c93d8061ef9fc9fbf16cd3a50d0bcf678214f21a9f626fe9099cc220. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ZAZ012300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbc5a0ac75b08e4ed1d41c2ca3495f4a9aa6198fe57e951b45219876d8b649f. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QM4TX2404480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba184177962f7e61406645dfb0c9219e2ddbd647d9b647fcb66054d7db386710. 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/ZAZ012400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043f33245580329ded5a1137c5885168942a20de5881af40d3613babca40ccdc. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/ZA8YF2000002.
Tonight (feat. Holly Rey & Mdu Masilela)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f8950d425e968ac869ad711b2ccf334c03b8a3527e2da3890fba6f5a8222cd. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/ZAA011900231.
Tonight (Radio edit) (feat. Holly Rey & Mdu Masilela)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44160386bb4b3d0c0026ac9bd73196406c1175ed1c8a79355edb89630237c2ea. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ZAA011900247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf677e5f64c1845ba374271eacf4dbfebc7da6ddffbb9b8d94b9e8b68da3aac61. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZAUM71900148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5457063f6da5d9c1ffb772e54c13402b7063cccbe81e99fd8dea237ebf7e26af. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/ZA6EE2000178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe771dcf17dabbf06787bec277ac2f5c9269fc754a0083115849eb789f86d8bd0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ZAQ832100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64302aed4e5724e8dc53a107d8013ec64b85ae2f3e9adc73a09e4f9654afeb7e. 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/ZA6EE2000087.