Toby Green is a British historian of inequality. He is also a professor of Precolonial and Lusophone African History and Culture at King's College, London. He obtained his Doctor of Philosophy in Afr
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 0x6c200636bf7aa11a5f28d1ae0c14849096f195b64decef02b8a552eacd012c71. 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/71822017-e276-443e-b266-b7743a8985bb.json and https://artists.proofprofile.net/proofs/artist/71822017-e276-443e-b266-b7743a8985bb.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 0x5db0a0b69dd2e3b17c700d2edeb68e6186ec44a6baa8f057bb213654fac064e4. 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/CYA112000369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9171df37d93f648b6371358906ef0537dc5b37096defe4be70f38ef54e050e5c. 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/CYA112000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1097281d8e7a5dc0faaed62b4d9105d6d8de76200c1625a80503f8be85436913. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/CYA111900467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb390a44aa038f8bb168a0f6c03b486f2822ba434c56d15d7fd5a45a1f96123b. 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/CYA111900429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccf46ed096a787e2d07b268347bf739ae123057e6d2aaf1a43b96f17541f21d. 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/USDM31914401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51f88ace676733565b02dead2d8db648c09a71bbc15e3c0bc3e912d01474e79. 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/CYA111900156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871518170e956676861d8d1e39d3287040b74f41f8f1b2497d412f93205ad08b. 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/CYA111900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e562d7fc0d9f51183efc12179216690c89459c9d282a64d3c70cda83959233. 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/USDM31807101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3728adc94afe7f170f0f73cfd6a764050577fd88b9f82488af0dcbea1850e73e. 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/USDM31804501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a361a3620bec186bb9bc8fc9852d888f3498b9a720a070dfd216c0da00e8ad. 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/NLZ541800898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bacc779ae109516ea9ce2c8e5639db939857e1dfe18fad8784da2a459381de. 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/CYA111800145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0ebbfe491de52b4f7f139d8b618f4bd7d0252a3392c97d3d2c3b6b02f4261f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USDM31899501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86ce9c1f6fb37a8b2d94242548892f23cb06cb764b0360f8a98d005bb50da0c. 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/NLF711709799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4253c4db1c074a4c1360881795c1cf589d2afb8a7df6de55b711a3d6c436f226. 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/NLF711707802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8b86c0eb6330e1688a9879ce7abc872576710a22311eda8d94344353fb12f4. 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/TCADD1756265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a8bd3659468124b99a3b7baeae52384a64b9d2175dc113b299740cc8822c69. 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/NLZ541600416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdf506c6b7bce6f14cadb410bc2f7b8b6f3dd31c39d4d343648623bf57dfdc1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLF711600407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96a2455b44298037df0062a2f66b17cef669de8baacc51702e87ad87e91a958. 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/NLZ541501147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133b31d50c3c62f52c44ce138a54cc21206fbf72d9eeffac2cd55a7fc53c8a3e. 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/NLS241502217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a50465219aeca52ccd86538b7a4a0a19fc05c6a188f6d33870fe4ea50b6724. 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/QM5JW1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bff969bbfb75b20c49c0cdf6a79afbdb9bcc9d17c08454b6f97fffdbac6a3d4. 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/NLWV71400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6e4385b0d5a4efb0765d2a96c71d0d8475b399206303d9d5ae10e6e6d75ea8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLZ541300628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b45b8bc1e5744a0d624c2e7a51b68856126e271cb45f4d8a96ef87c0fe6037. 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/USAT22002225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeeb7ec3f54ca085bf9209367849aba907d2908fa745c1ae109801f523438812. 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/NLZ541800120.
Chasing After You (feat. RUMORS) - Paul Mayson Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaabf3edcb7c9fd7f9c3e86f8aa577ba40c7b024e26fc39722ad49585103ae98. 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/NLZ541800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed985f23a829145588dce68d1fa1973e18855e7d6b983b5396baa8ff959d2d3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLZ541701191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a8bd3659468124b99a3b7baeae52384a64b9d2175dc113b299740cc8822c69. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NLZ541600416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a846392547eb08ec7637111b5109ff6fdb06b1c6eac5b2650861160738cab8b. 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/USUG11701762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed985f23a829145588dce68d1fa1973e18855e7d6b983b5396baa8ff959d2d3. 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/NLZ541701191.