thumb|The Unthanks The Unthanks (until 2009 called Rachel Unthank and the Winterset) are an English folk group known for their eclectic approach in combining traditional English folk, particularly Nor
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 0x9fa2261706197c1db07ff49b0e91f428dbeb28e6a269aa0fe2fc16387a70e695. 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/0b75dc53-df86-49e7-a893-1561586570d6.json and https://artists.proofprofile.net/proofs/artist/0b75dc53-df86-49e7-a893-1561586570d6.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 0x914988c24128064b856baefb02f002803a6d1c61f5b77a68db20b4949e77a956. 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/GB01A0900748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b868a1ac8df3a933b1529cca098df335842080172b1e43e1eaca982ddeebc7. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:29:44Z), 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/GB01A1000494.
The Songs of Robert Wyatt and Antony & The Johnsons (Diversions Vol. 1) - Live From the Union Chapel, London
The Songs of Robert Wyatt and Antony & the Johnsons, Live from the Union Chapel (Diversions Vol. 1)
The Unthanks with Brighouse and Rastrick Brass Band (Diversions, Vol. 2)
Songs from the Shipyards (Diversions, Vol. 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121a4a741250825667f42e0d05bec644899bbbbd5af00faa7bcda218e4c4e273. 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/GBRNA1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5d2ff88bf880bc9184604546a7e658105eb4b68ddfd4ecd3a54b7d0b1e64db. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:14Z), 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/GBRNA1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867093e317aac9849755c04ea47a05f847d5728cfefbaf6054ef072e3fcdb50c. 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/GBRNA1200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa82978dfb9ae459e7115433150ff9b9a27216c55cb9b8ba25dafd28b8e8051. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBRNA1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a28ce6369bc9f8e120c32ed2c6b834fb81f6fe827d098721583a371e5710a9. 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/GBRNA1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0fdaddf4732e8ce9c04652bd511f1c5b99920353382c05b03693340183ecba. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBRNA1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e1f36172b1d6efa224b80133903cf77e4dff4e614bc077b928e90dcff13ee4. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GBRNA1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19a0a03a524dea7409cdf66ff5bc6bdc6982293fdff2a8206749029e64607e4. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBRNA1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff483b394eb84e9ee9dbcaabc8f2576e0fa289e2b3617abcb22578bd83bb475. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBRNA1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90173ffebb55bb3186bd9dbff5d5ff4b1cb4625241ff96a57c080ff86bab823a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GBRNA1400010.
Diversions, Vol. 4: The Songs and Poems of Molly Drake
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64fc6340c5d4ad2b5e8e1aefcc014e611659f82b397f65ba6b9173c2eb3377d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBRNA1700001.
Diversions, Vol. 4: The Songs and Poems of Molly Drake - Extras
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39443f98438c64b5ed4cbece938080dcbef42810168869518082356f7271de4. 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/GBRNA1800014.
Diversions, Vol. 5: Live & Unaccompanied
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc317a142431ce1d06b50547b152ccbfd5898eab511c02f8e12202346e639f322. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:16:42Z), 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/GBRNA2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f88c0a3e389833477404b0fa185f6780ab2e6c7f2cb3aceeb55327888714d0. 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/GBRNA2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f94b2c7bbb85004e6807462ba92cc5a0dcb44a43be11c1a98b5f06c5fd5d8e4. 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/GBRNA2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e002efaf29a82702a77935ffd283304776ad76f2a4705f139f566f8ed6c5a5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBRNA2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa297a057d02391bb51ad2af17c425b1cf0760d0579091809366d3d6777ab8928. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBRNA2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001f324d6574d2e473f905bd2c0f322ef60c5f54df3c9e7ec2845895d6d34e87. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBRNA2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f32de37dc0f1512e6dce43e978416dcafd74f8b60fbe7f8a2242fad196206e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBRNA2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca391ac5d50a6b0bd8bac1aecf1531af5b5431ba0b4c0c9257439705caa56a2. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/GBRNA2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3f9fb41e55bd965df57d6f1bfaf66acbfa048f0210268d237b1a8c00d049f4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBRNA2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611a6a29971adb7257995887f3849749456181d3375c85723540d3b9e2987673. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBRNA2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6aa82841aab9fee47cb6bc1d76fb3d2dde4aabb2f4a2a41beb01b5a9b74e97. 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/GBRNA2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef889f2b6c1068d840975aaa64bc586b918b0fc2c5cde33ea3a1699f4eb9b58. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB01A0900751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b59c736bd8fdacd7f527b2977bc986d5e38f4973a758e1c3d416e6bbbec1f3d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBPVV2003428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37420c05c7e2bbff6bc3b7ce08a9ac467e615a728c054b850e544733cb7c6c4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBPVV2003429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87c78bdc44a69f9c6fd8e7c4bac37f7cdc9e85245f0630905e73d2bb2cf2660. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBPVV2003430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30e52665e44607bdf1056218918010f198c23085337552e217726bd599a32e0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBPVV2003435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3530bfaf0789a7120beabae1f930d754a401fffc2e12483340b6ea26b798bd91. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBPVV2003436.
Joy of Living – a Tribute to Ewan Maccoll
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a09869e15c4c74baf371fd73ce338e77a2c1c3a105e2f83f999fc9a05cd5c0d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBCEJ1500791.
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 0x4699637732eae3b13204adb1a95bbe7a52b2c90e61c609bac8d97fd51727bb6f. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GB6JC1000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978070ed0506a36c213d0cb247fe3d956d47f84e5f688ec43f12c7e299b845a0. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBPVV2003431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5224a0d3e8247a2118e2e986a3c9a2b8eb5f21d421c0534c1df31402b2ae23. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBPVV2003432.