Spunk may in colloquial English mean either courage or semen. It may otherwise refer to: Music Spunk (Sex Pistols bootleg album), a 1977 bootleg album by the Sex Pistols Spunk/This Is Crap, a 1996
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 0x363502989cdd21e1958e63d363f478243033c67aace119e78c1f13e8a322fe46. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61706018-6f6e-457d-bb65-2405c565e7e1.json and https://artists.proofprofile.net/proofs/artist/61706018-6f6e-457d-bb65-2405c565e7e1.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 0x7fd51f4c0b235662b05d3fe0f2e3971434c84e0c44110d55bf47bb7dfe6ecd7c. 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/QZRP52230410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecbd11f4771ebeeebdf5cd4540336b88c25677352057a29a067977bc3ffd94f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZK6H2370734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783b61b6473fad3af7520fdf6dd8b47cd4bd4c09c7ae3afb4f8e9b8aa6890756. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZK6H2370736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fa66fb3cc2a3b4da814113cb9f3f8c00e8a7a3770e3ef47a88274123a6f176. 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/QZK6H2370742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae2518df1da964082a553bb2591fa36a365450fff19effa0aac36c1db934658. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZTBB2378372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af75f0e3e4a828daa520b87d37278ae997b900a7557ee8d28bb53767c6d6eb4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWFP2441012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe741150f15c91683ee0bb101ded5605986573851a368b0c781075705dc5e75a1. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZWFP2441013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e13014c0010cf39c6bed46d3f1e2b888376b7d70e417d8544be84c8f8031f3. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZWFP2441014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9fcc8715b469c8060f5a81e3d821784b6f658f14209739211a2aa8b0af400d. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZWFP2441017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2721f9a25ce64c782c0e9df889de79c93969dff56f2d1255031b8efb570259. 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/QZWFP2441018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc4cab7bc6cf4159d0c8d336ca4802ad615f487d9a840a488948f84f162e845. 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/QZWFP2441019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d36293ce74e866394c6d34a38b6722c4db7412084eb4660ee72838b933e841. 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/QZWFP2441021.