Hemlock may refer to: Plants Conium maculatum, a poisonous herbaceous plant more broadly, other species in the genus Conium; not to be confused with the related water hemlock and hemlock water-dropwo
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 0x3b0a763ba3a215755af5dd1daa55e089351ff79d511128c24d6076c4d09171c0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80515211-2bd3-4ba9-85d7-9d7a02e26ce5.json and https://artists.proofprofile.net/proofs/artist/80515211-2bd3-4ba9-85d7-9d7a02e26ce5.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 0x7c04f50d4c1adb500ed898a24f8f63f498b6673a4f201d41ed66e9f54b756ac3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN42481006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed36c3d69e04f10868e49cd726fb4d486af2b9f85299ff1770419ab52b78835. 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/QZNWR2436081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0547283f85c37f67c95cf49497b4b8ecafa4b114cb33d90f823fbac0d7d8bc18. 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/QZTB42472332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fa32cadca74b25f0ca0f8b1fb106d3c43b53752e2e7442f806e0254d20b001. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTB42472333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4925e6def070a195e796354f67fe943a85a12a535adb255b0d7fc70a2b0b2874. 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/QZTB42472334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68c5dcdc4710e02f20083b987bf4cb9914fc95990f8426ec3dd3affcb949958. 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/QZTB32494707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6996eb1ba55ffe7b3f5603c3580ca0ebcd3756cf3bcbf1c96a6944f2c7def0. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZZ7X2491413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb922f136d4921d405ac599fe45d73b8407c1046231ce3b2579c5d986b9ea038f. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:32:16Z), 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/QZZ7X2491414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8b8caeef4c9f31e9092606ba0dcfb6b92b5470fa8993cb517410c9555124b5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7X2491416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8204f183c3d0849be4864543456c01ef08ccce4223499eb72027c3ffdcc7c4f9. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZZ7X2491431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188c8f948efa6c3ee84266dfcfb3167f414c99ca2fdab89bb45b089bf705d8a0. 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/QZZ7X2491433.
How to go on loving (when the living breaks your heart) - Audiotree Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7890118d69cbca801b09c00f07e86921d93f4d74d6143c549474459757e6386c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM99V2412001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc067a7a133340b769bef2da3acc58aa3d223c90361403baf690783c43f16dfd5. 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/QM99V2412002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f14c8035efb610874ac21655265df90085fa5c8b93c55f421e214868812b00b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM99V2412003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e3aa34769ee55953edf790b6ee4edd04b8ca785072afbfef2f09464310f033. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM99V2412004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fedea3f2cfa1271e9b1347c4c7d8d3f88cfca06ba8100e2dad92818ec6dad73. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QM99V2412005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ec101c5bbd7c9da0aecf286c09beb328d2a3a4ea0d03539d7d2875ed076160. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM99V2412006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcf89c63f1c5e9120ef48673c2b96a05592641f9126d2d5406841148c63ad94. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QM99V2412007.
Anything At All - Audiotree Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f43c47cae4d66cfe969712c2e7ec7684808158f4c5f1944792618b1945e946. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:04:33Z), 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/QM99V2412008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0005fc8b0569dcdbbefd72454a6b64bc39d509871e4fa13801c5798addf044c6. 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/QM99V2412009.