Punch commonly refers to: Punch (combat), a strike made using the hand closed into a fist Punch (drink), a wide assortment of drinks, non-alcoholic or alcoholic, generally containing fruit or fruit
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 0xf2c66ece4b5d8e811ca747a30ddf5256f6315d0523b6b83b16d2a1bc93f653fc. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f806f977-8623-41d7-87e5-44130448de99.json and https://artists.proofprofile.net/proofs/artist/f806f977-8623-41d7-87e5-44130448de99.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 0x3b60625a8acb9778ccb2c11a731d2a59355c7c3590296e6ae114f0c475d5f1dc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:03:02Z), 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/USHTV1100546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26e7c79efde9ff466099578e945f28efeee4f3c37d28f1366e27997a24893a0. 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/USHTV1100547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dcb2e5d6da1bd923acb3d325f6f76a4e0c5275be245ff588b982090eb4f4d2. 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/USHTV1100548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4d840e8bcff2c2aeb757c2fdcd7d316bec7b6afdb3d23b7f0c336981c67e85. 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/USHTV1100549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d21b17dc081fbc98534501d5d29b5aca75a26964184dcf8a6c52bee7af080f. 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/USHTV1100550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d20c03a814aab828aafd7535f846a55584cbeb7f2b558fde3008db22487189. 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/USHTV1100551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424e39e52e59df000e5ca44553a73f0fd8d3409ae843e956cd754282a6070da3. 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/QMFMG1466268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76573f268d37067c61d91ce8fb5d6bad135050c9ae33ba1257494eaed3bafed2. 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/QMFMG1466269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b21eb122e9953b6aba0b90f2f77500184857b628efbcf3814813e30c35b6db. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMFMG1466270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa27ae9e0e43ca626acd839dc78585597f30d153f49e24662c9b6f331feab8a7. 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/QMFMG1466271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328a46efed89c818ae620c9f9e161336b8a4eda0679245f9c6a1a7c582c99f2c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QMFMG1466272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a712abd17d6d30803abaf57747bf020b4cbb8f5a9ef20a2fecc3f7d20efb76. 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/QMFMG1466274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314814c8deaeebe65e7de1e3ddae8d5f19a11348c1ec05613323bd18a7f631df. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:59:23Z), 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/QMFMG1466275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbef093405a1f62389c914601f7e90fb40a8c93a4882e89a884b962ba4382755. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMFMG1466277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b2760c9240e70bda2f089c244683bf60ce09ceeb653ab364d6b73b065b493a. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:09:03Z), 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/QMFMG1466279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84808f36f4e7da91469a392d73b1ec8ee2bb9efd9fca535ce056321a85e919fa. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:39:01Z), 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/QMFMG1466281.