Leeroy is a variant spelling of the American given name Leroy, which may refer to: People Leeroy Anton (born 1985), French former footballer Leeroy Makovora (born 2002), Scottish footballer Lee
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 0xdcc89d444dff20e2c6c239dbba4860771f3b1a5924b8f28e9ca272f3d18d5cb3. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13de459b-3031-4d84-a473-b022b8ba4904.json and https://artists.proofprofile.net/proofs/artist/13de459b-3031-4d84-a473-b022b8ba4904.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 0x5f98a4c94b0d29b7412df12bdbdc1c4f8a8b68e75faf9d682cb4adff806ba7be. 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/NLG661100193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3712b11f7ae85834508c11358ceb390d09a2ee353e40483f7becc2e5a159b0. 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/NLG662000819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849f15d0cdc111a46a8065dd230c1ba7dce33bf4ba40e6bcdbf662df41be3b53. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLG660800197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fdc1e837ea690c1074d187607858cc670543cbf7e16dff76e6aac1c98628a4. 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/NLG660800203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1519fe7331d000d287571b6320535ecee71377b7000b22413f6516a6b9464ff. 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/NLG660800208.
Fair Play - Bonustrack Transformers Air Mix 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24beed70af625f118c5561a975be83cee88fe72fd44ee73ce295f401b48b2df6. 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/NLG660800209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37284a48ce884504ea33c4d7cef0eae9ef3042eaf201afbe615ea916d96e0ac5. 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/NLG662000531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d685ed121902d4b62188307c533924815dd92df894aca4c5e8fd6b620f1ffd7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLA6M1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d1e72925092ffb2115d2dd0ae21a95d72e41431e5386193e29e56e5af2ea46. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLA6M1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402633e699a1673e8d335d4f8cbb58bd0a1acc5b7bd61e1c1ef298bdd0d9f232. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/NLA6M1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d685ed121902d4b62188307c533924815dd92df894aca4c5e8fd6b620f1ffd7. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLA6M1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52ee0bcdcd94bd29f007cdef6e4155a547c7e27cb9d8a1cc1400fc2f099b43d. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NLA6M1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6387b4ea73dca35042a0b45e7599f8bf6363601972fb63468df451fdc989d2ab. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLA6M1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4c37514d1ce192f02c1a9afb422d851448238c051d96f6cd80209a81e95b55. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/NLA6M1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3017efd8d06c05b2cc82c8b3051fe4063d7ebd1a29248855fc4e220f7caf89. 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/NLA6M1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5af6aaf52809debec4a25d52bf816960d0e44b3b7d5289d435d2bbdbd9c8a3. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/NLA6M1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e105afb16e685beaf75d1b517701073ac85d6bc3ea7aaaa9707e163d3add3f. 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/NLA6M1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bad6cfa84bdb675a47a3623cdb508b2930013cf8ef521e9df77a40de0706451. 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/NLA6M1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee84f389cc7228e2d7e5a5ed32083c08a60d54f7a0159975d65c40ae503c910. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/NLA6M1800012.