Roy Harper may refer to: Roy Harper (character), DC Comics character Roy Harper (Arrowverse), the Arrowverse version of the character Roy Harper (footballer) (1929–2023), Australian footballer Roy Ha
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 0x0a0a5e16cc45cdf65e18b023fb13839321e7194d8852bb52ad84974777f44157. 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/3370d438-acbb-44e4-bf5d-0364ad9d6b5d.json and https://artists.proofprofile.net/proofs/artist/3370d438-acbb-44e4-bf5d-0364ad9d6b5d.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 0x0558c712c836a8c1f283e68222b47bad383e037bb2127730f2e04b1999b37e64. 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/GBDBA1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590fec398518741375f7c1782a90607c1c6beeb1720a3efb5a89df92f63a5679. 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/GBDBA1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1af3f29a4d5477caf47b85493be2dc810e3c862f2bcbad14df22d2243cfbe78. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBDBA1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cbd702fae5a894f3d13834d7404eedd8180a5e494e1d0733b957bb4270e2de. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBDBA1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0129ad5dbc3c19127b43fe688387a5665a289b95d69d5057e92468248800e8c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBDBA1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e3e23cdbad70fd8344acb02920ed8136e9bcf936d373a06580c5cedddc1072. 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/GBDBA1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86337d0d961e733b4aac7b4bdcc9c0f3aa8463a3c61e765d340f7b1c5dfd9c2d. 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/GBDBA1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41e68e700085a3ad7f62e4fe62282e416856b853e463552439639e7015fe0ee. 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/GBDBA1900010.
Come Out Fighting Ghengis Smith (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200c7fc8f0b8f8701e2665b0fc3ab3ced732ad1542db85701089b534e887f26a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/GBDBA1910002.
Flat Baroque and Berserk (2016 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3934bb13d4312d022be3c0b0a6d3fa966e9de01d9a65a873096210da28eff0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/GBDBA1610001.
Feeling All the Saturday - 2016 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc5dcbafb371c11b22ddec82348a63cef09b7cdbe80bc3f2e695dab62415be5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GBDBA1610003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ea1eab26a81965f3af42ecaadc9ddc9ae685de507d40004a1d650297766d1d. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/GBDBA1610005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507b5fd25b8a21351066a98dfbec5182f1960a4d45c6a68fa8a19e766db33cee. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GBDBA1610007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4869819b502b60d7bb76ba3804eddf5299c09db00df929ee36f340c9552e4e3. 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/GBDBA1610008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5835a63a23307de0293575ba805a2ab8c1ffba7e10f8e7baeec6c3db0f23d34f. 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/GBDBA1610009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f536ada171b086d354d56cfecac9897f08bf4ca1829bdb42dc5bb75e3f1d81. 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/GBDBA1610011.
Hors d'Oeuvres - 2006 Remastered version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faa13dcabce3b3316254f30391107138d783207a9b8cdf83e53906598dd2c96. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/GBDBA0700001.
One Man Rock and Roll Band - 2006 Remastered version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b4dd91a0b0ee2b49a769d76f898dfe36011aae8b0ca2a7798d5d46f975aace. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBDBA0700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab6658540bc2275030c8a95cb58f4c9ea6d16677ccaf0efa061dc9aad21128c. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/GBDBA1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84871e26f8277e6a45cc287bf705754bc79313e466e85ebac472bfa0c9584f3d. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/GBDBA1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8d13bdd87338468973b55dab5104d01a0de79345e23ca0464e8143a930f975. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBDBA1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad0d062266590ea8f8032ed7f76a4380da100de65203aa2b8e6cc8a73432e89. 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/GBDBA1200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811d8b6e918e7d6a6110eadda4762f3d110294a2f84dbb1aed2011a300a21182. 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/GBDBA1720002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b630414448a5a7b64b719321b81de4f7a7e85a3cafa81a8953eb52556823b9. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GBDBA1920001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0265cef76056970931aff059bd9e0d6176b6ddab226c8d3359a0ec34fd67dd. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBDBA1920002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4eab8c5043985446aa94d519cb038a792dba53d15fd128efbcfa7037fe3e24. 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/GBDBA1920003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8609b9261e5fe14d8ef3d5b5166c333f40adb22796da21712088a7c5bb40f9. 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/GBDBA1920004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d148b2778e11afe7ab500420a8c3eb044da9b7e63609389ace592d78010aab0. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/GBDBA1920005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c5bf59a02c70b3fb975a9c9fb4e4e4ec60d6cda702bf8aaf6c906f42ea17f4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBDBA1920006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a7a17671cf845035b6544a00ddadde3b4df3234eb650689ef8dea79ed02ea7. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBDBA1920007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4005d3351fa6a3308e9ad490087a9716fee08bb7e820444a30ab431c5bdfa2e. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBDBA1920008.
Live In Concert at Metropolis Studios, London
To Cry You a Song: A Collection of Tull Tales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d576ff3e17ad30d12ce68516fc0fe56812b019ca27db7a7fd3f0ed511b9dac8. 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/US78S0500903.
The Magic Forest: More Pastoral Psychedelia & Funky Folk 1968-1975
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31c869cd330826f55a9b56ffbb69dc21480b3ebb117c3ec258fc91785898e8b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GB23E1100022.