Karl Joseph (born 29 June 1986), known professionally as Sir Spyro, is a British grime record producer, DJ, radio personality and label manager from East London. He was a Rinse FM resident for twelve
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 0x170d92c395a2ede3898ee2c7d3a294310f5528161f68595ed70524bf4b59a224. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/193f1b1a-02b3-4686-919a-b5233f82dc59.json and https://artists.proofprofile.net/proofs/artist/193f1b1a-02b3-4686-919a-b5233f82dc59.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 0xab3f1cacd2c3918528c8f3e47a335b9c2989b69783ca4f3b1d119162504ee77d. 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/US5ED2000222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb608177c5f59b52c42918336f28942aaa2d15c6adf49378460b85962bf18e229. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBLFP1669810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17535d0d822bd0ad85936f945b0c1b284593e3241244670724bd5b7c71b17c2a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBLFP1669806.
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 0xa4feb0f876667290face250b13866697a3056534e798020a99442d7d8221c249. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:04:47Z), 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/GBLFP1669807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f104fb793063a0381ec83bed622effc71f7ebca0a833344682ae0d607176c1e. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBLFP1669808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f52797a782bb849b32d03eabbfcfd417aceded0f7b75e69bd962d2232338122. 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/GBLFP1669809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29e11e02f9589d8e75b3c7fe469659d33461b0f1b0724928ebcaae53d4840a4. 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/GBLFP1669811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac872494a19b2e28d713357633e49c2651025decfe5bf734f3238a417c9b800. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAHW2402183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e7b874e303c4b1be92ea29e355d7337565fc9b0542135d8815822812c393bb. 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/QZMEP2489063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75c66e9e31f82c4573a95a56fe5bde9898c69b40bc16ff1f95b9b9d18839b0e. 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/FRX452353845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c746799f65cdd61256b4dfe115cd742c415654e6fafd4821ed49b29f8b37b79. 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/FR59R2389863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c746799f65cdd61256b4dfe115cd742c415654e6fafd4821ed49b29f8b37b79. 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/FR59R2389863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7808e26cc88bed3d0baf1f3f1779bdbe8fcee7805b95c553e4bac248716635. 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/GBQGW1290098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3e665b1e06b079efcdc84bf8a56e4a87a03496725d204d378aa76cdc622d13. 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/GBLFP1829741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661961db123cc5bb10caba50850e71a9bbbea016ff50753ec795f3b3ff6aa739. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBUM71903623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859ffbb8ee5e69f03cdc53fac31438a78823bb1a0ecf10f1a42cad5795f91171. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/GBY711530155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c008d3506e4c1e515633851add4d6d0158b4caba9d79d67ea6eb5844f84217. 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/QM6N21526737.