Kingsize or King size may refer to: Bed size A size of cigarettes and rolling paper Kingsize (The Boo Radleys album), 1998 Kingsize (Five album), 2001 King Size (B. B. King album), 1977 King Size!, a
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 0x3a390b7b24516f7514afc9ccd958ea5ab767f7ff89392b447dde3fe27a0f7816. 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/e063d02a-3482-4bc4-9c00-9691211656a8.json and https://artists.proofprofile.net/proofs/artist/e063d02a-3482-4bc4-9c00-9691211656a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hoe Dan Ook (feat. Mula B, 3robi & Louis)
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 0x267995f5c3cca7fd684e5f0ab7f71f1c2f5e7e322c38f9bcbcb71ba57541bf5b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/TCACR1630100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9f7bafe31d5be2dcb78588dcef8f8acc8dd4d3c5d0dbed2c84a6e423a256d1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NLG661800343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfd4220d60ada2aba5a73235242128397b210fc1867a64af463f560345bfa57. 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/NLG661800344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb0b525eaa9643c45bf173740fea73a65578a2e79db982b418a8e95590fbf57. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLG661800345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9619f760c206f2e807a55663bce851d534e84ab35e6c50db74ed5a6a480769a3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/NLFX51900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe944ec6c90886ff11317cee72d373b75b1fcfdc3b54c8d064435ad9d67238b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NLFX51900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d90366f89ed027a465f90664f458bedb47de9bb89bab574dc15e5d13f9149b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLFX51900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c79660a4c4b0b8449a586a0ac43362219df8d3c8d5311cb844ce82502ff783. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLFX52000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b44e2acaedd84a0d34986bbf926d9a178dd5302e13309525a2eabc7cb380c54. 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/NLFX52100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa481aa84080e95a0aa6abd960e50e0da29ad8e3e0338b782f0444d9565b5c069. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/NLFX52200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53e6b278c858c175e0eae33a43a46bdae0065cb0941dc6645a2a0bf26b89931. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLFX52200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb271f42bb4adc0195c0572754c2136a6cdd6a571e73704ad8f107c814c97640. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NLFX52300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa983c04ea776550181217ae686c8b87687eb3c5aecf975ca53693600e9992127. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/NLFX52300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa983c04ea776550181217ae686c8b87687eb3c5aecf975ca53693600e9992127. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/NLFX52300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37912111b48be3d1f61fe7a0b793d03841d2ab50a3fed65e09d51e388ed3a060. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLFX52300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf13301b854a367006cbf1af96574085d20d8a16cde5cb1b4cc7a112cd730f18. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLFX52300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68d162c3884a5c296dbe4afa0cdf48d42358e616e9321a7ee540711c47bfdd0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLG662200265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb7b69757db2e85990ac2b2c1eca5fe20021a17c4c4971ec78a03598173b685. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BEEJ12200007.
Wilde Westen Presenteert: Welkom In West 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b50b56aeb9a9d60e64ae065669bed0fe823f357102d682258de00c2f9167a3d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/NLFX52300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd923d4190a3988eed540f9639a96392cb2def93ca5b782ddf5bf03b1b65f7198. 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/NLFX52100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c6e86767c3a46243d065fc4975880f93c3be0628157e9aed2f75ac37de10bd. 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/NL4DU2000495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f771a28d85b8b94eb8438977cb21d97443cb7b8d2a0df4c033836997b84e6c6. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/NL4DU2000450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb365cbdd8c19dbbd0cfd29096c4a0d4064075e4219944a19302c3666b8e9b2c6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLY9D2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0432d244cf872a3805e2f8871738a0e222cf2ec6101a9218ad8469fe93b6a3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN92294001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82ff8f607fc9e975e0ee1595cad7d3489fb70a21390b769c61639aba3a7f282. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL4DU2000343.