T99 were a Belgian music duo best known for their song "Anasthasia", which reached number 13 on the UK Singles Chart in May 1991. T99 was a project created by Patrick DeMeyer, who released three reco
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 0x60c5f1befa4468adf4010d0225c086e8d4da615449fd7630190ad4b89cb11b9b. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4b85d92-fcaf-4581-83c5-f062cb7ef9d9.json and https://artists.proofprofile.net/proofs/artist/a4b85d92-fcaf-4581-83c5-f062cb7ef9d9.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 0xef263fd40e90d23e83254a39bf48997c34f21f475b44aaae9d95622f31e297c6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES62303165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09310053ad7d44b371ccdcff97edee1b96a8a3a528ac1b3ec5e01b4785a5b312. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZES62303173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c35909a34c040a7fb812059109c1f6e656ffaca0d408848fdfe35fe3b745e99. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZES62303168.
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 0xf2600117c5c4c3eddd40c17a6ed4f1b06657ef9f53dc17e6f3e73995e5dc8d54. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QZES62303169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe784b1fd8ad69e1e59ee65988c8a451546918cda5452248681c8f384d6725c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEP2239560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4ccc8220f3b154f84c786d28d0c6e952e2e665d1e8d298283a470bd792a1eb. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZMEP2239561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0241066362f6bba2701dba260e4c8c9535a68d3eecbc9ccd263c9f25d79612. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMEP2239562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ce1e1f01449c06839f236e28eb2810edbf0ff5806f60f63aa2c922018c21e0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:37:35Z), 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/QZMEP2239564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb360a3aa16fa92aefc9656f282da69da2d558cf138ca8d6450e91853d474078b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEP2239565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272ef217a089703ad7e032def710bfee038eb13aa6e326f67ae11a77fab9d9c6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMEP2239566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2fbda47be2221762d907c604c70c78027cc99cc242dde103c6421aefbb7275. 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/QZMEP2239567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947e9dd443d9ea501eb05e10511cb28092f1151e34517e975742efdd59061360. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN72235299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930b1fde9d2125a585e64917e0f4bd11b0e34933d1d8549917e7371e6f515ae1. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QZMEP2239563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9488f2d70c81b16e06a3116b9e803d32b6fced03f4db627ba59b3a9fecaf92bf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA72277159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b35634d32e392d409fdf8a3a0f9df66d9ee77964a2f153bc201a8746d52c36. 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/QZDA72277166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3a7d587034efdd078470cb393b90630f8864c0c3c95251303f212bd20e6e65. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA72277168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b072e3ac1bfd1630a480e64b9eacfd776e1f44c16f1dbf224cea985b5c55bb. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZDA72277160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f928bd214c3ca935cc00cc1d51db04d9508734fa52d32ac0b933e4ec8d3b0d. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZDA72277162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d34cea9ced712c443afcb9976ce72c713f09164a70faf7eb684e81c396c5e90. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZDA72277163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a4bb5b7af4b689faee0e3671f99bdabd3d8b8a6b78417bba741599e1c28bd2. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZDA72277165.