Steeleye Span are a British folk rock band formed in 1969 in England by Fairport Convention bass player Ashley Hutchings and established London folk club duo Tim Hart and Maddy Prior. The band were pa
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 0x4825d576a4cf05bd25136a4872df83ea9bf104385a3e3ebc47f1a4f8bf00d8dc. 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/80a9490d-0610-453f-90e0-4d92c4211635.json and https://artists.proofprofile.net/proofs/artist/80a9490d-0610-453f-90e0-4d92c4211635.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 0xbbe7f1184e9eafa002df09e3208a0b65500d73129e53326f341db7c379fb6041. 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/GBAVZ1915402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48250de59adb206b219d62be3e4c6511a0a047034a3ee489ec09a67110071b8. 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/GBAVZ1915405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9a80c9100bf6f8861bc06c00ad8de0b7debf5f67bfd20f492ddbcecd22fece. 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/GBAVZ1915406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c45eea1fa165c1820e7341f27ba6cd852417e993411bdf5762b51d837046b0. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBAVZ1915401.
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 0xb70f1aaa32befcb3816c1c4424d32a6850155e511f10f90575a059316a4548df. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBAVZ1915403.
The Boy and the Mantle (Three Tests of Chastity)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb378c783b268a0323eb2b7f1e00b410af73b478ebc38248991b53e7964ac6fe7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBAVZ1915404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7d39dd7b005a3dc7c1458cf61e2ad240f2a87fd6767e4197132785eda6ddaa. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBAVZ1915409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f87d2eafa9deaf817c0d4d05e37fd68af608fb93122d13aede41c486b6a31f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYK0900433.
Hard Times of Old England (feat Francis Rossi) - 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bd4fc1ac65ec10a155a8736670e2a3e13c716c0b93887f177c84067cf0ee56. 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/GBAVZ2315902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe7f1184e9eafa002df09e3208a0b65500d73129e53326f341db7c379fb6041. 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/GBAVZ1915402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd81069e7050303e8222a6a76f70027cda65814602ef00d9262d194313f72d3. 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/USA560546958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6275f10f2e2a0be45d024f1bdc32526af13f224335c46996baa9f40a8c93bbd4. 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/GBAVZ3215901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfde79dc4299366cf1ea1402e1dba7e6979cc02d9e6f0282b12aa1eee5c24ea3. 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/GBAVZ3215903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc1012ab36e90b1b3f7e5aa5c8f0fbf8f9f6f76fca40d48d8f0ef6db9d27a71. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBAVZ2315904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52d8d6fe7abbdf77d0e9f2979218ee1d22417945de1fe19e79bd1e24530a258. 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/GBAVZ2315905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f7ad09978518d5de671fd08529fc0eed190b361f421e1cff18ff7b23d97e6d. 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/GBAVZ2315906.