Swell Maps was an English experimental DIY, early punk and post-punk rock group from Birmingham, England active in various forms between 1972 and 1980. Influenced by bands such as T. Rex and German kr
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 0xa4ab3f9fd1ce751f685817610d334327cd3e5d541342b5fca134be4e25af0ad9. 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/1c1332a5-4acd-48e1-872c-20c9ecd2d71c.json and https://artists.proofprofile.net/proofs/artist/1c1332a5-4acd-48e1-872c-20c9ecd2d71c.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 0xb41f1c9831a73ae3e85253c3ac3e0e69b6bc69379ce8ba4ace7ca6e4dccebaa2. 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/US27U0403501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda52c2b7f4bae56b33c62fd017aa948295c773ff6068f4edb4936761b7e36a2a. 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/US27U0403502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca416cfde801603afffe61f2ced409f0bcbab93c7f0989f71732dbd2e038c9e. 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/US27U0403503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07e00780c2add80d0621f44d5014b93447ed0547076cc5daa6d27030e347a48. 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/US27U0403504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc163bc344380af4f2c29aef45391a38dd82edc6558bcc60d224f40fd377db2. 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/US27U0403505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e244238800f3aa4285344d5c841354e0c993ad0036609640bd3f29c42ceae29. 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/US27U0403506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841d63b012cf42012efb390889748ce7b251b33527fff05838ba1be523ae2a85. 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/US27U0403507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd966058458febab572414e3dd8b363045c2ed96f82aa61f7dcdb3c7d0b6faa31. 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/US27U0403508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a2f72fed5da5a3c150f29274b1ffe435f40f3d14e00bb6065708b3fac3accb. 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/US27U0403509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c751b35d46a4478a1e1633956e9959448526a142e15d4e972d2e1a33dd54526. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:00:21Z), 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/US27U0403510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5856f8b4c02f7417258b1006699f110e2d82de48bac3b0e7bb97142d0203d07. 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/US27U0403511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca3e44d98690154d0b743df4972a2bcf3b076b401a17be6c59f1483a201577c. 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/GBAJH0401398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2dcdb7f61a934086b81cfaeb9c7e9453f485623d1ff5a9c807f863e6e86140. 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/GBAJH0602600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c435736425b040c66e7ea441bcfc2f412b01c00e8d2da7d3f74fe1b83265513. 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/GBAJH0401408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ab3bfd7f8e039242aaba746adc69d77e9b3830eef366370b8c8fc11c701d29. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:21:11Z), 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/GBAJH0700189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d4281bfa72295f095598b74c415c7b65bce878ed4497f55dd201378ed40a50. 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/GBAJH0700198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a62806c1cc23eb9edb990aa305cf8fd1302cf741e4b9942d2da1979b68e44c5. 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/GBAJH0700193.
Midget Submarines (John Peel Session, 15/5/79)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5053fbcaa957850f45fcdf88d58228c0a5b575f2ebcaa1bfc243168cfec073. 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/US38W0410495.