The Delhi Sultanate or the Sultanate of Delhi was a late medieval empire primarily based in Delhi that stretched over large parts of the Indian subcontinent for more than three centuries.Delhi Sultana
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 0x22eb6434e609604d21a7f7682eb0594287abce83cc83a2fdd7341d42b588a28d. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0478d3f-6bbd-42da-b4b7-b0c970746108.json and https://artists.proofprofile.net/proofs/artist/f0478d3f-6bbd-42da-b4b7-b0c970746108.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 0x535b441c8f0f053769dd138682c110a7989e705d1d64da7d2f0aa04f19f43df6. 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/QMKKH1400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acc1323d6124d9ad81e340a2600edf6e81e5597931b4df197fb53b87bcc7bde. 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/QM24S2006878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b07dd20deada03b8b9cb2ab13d977566da0cf9c87d0031b7973bb9a99ac0810. 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/QM24S1928084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a029001a7cecaad7585fde543b400d7ab7195e5ae8890233736fb22f560799f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:19:31Z), 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/QM24S1925556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c63b67e8482cde83b25019098dbe9e4090c298dee18feface16f2cb7b62747. 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/QM24S2006879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012a2acf455cc554c3964a959600525010f0465f953fe39fc4e74afedbcf29d1. 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/GBYPD1000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c842f80478a05d825ac4071708c12f8bd2f1ce5e73cdc45d193deceb1c9b39. 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/QM24S2006881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85fa64a2588afdfda2ce34e96883824b3e8d919e8a1a39711af72e87f317a2f. 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/QM24S2006884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06a946c013392753a534c9b5846a236a558aff9980785eddcd9a694a08e1792. 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/QM24S1846241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023ca1ed31af8504302f27f2e3e3de4f853317c584944a9d432fd5c0e765e9c7. 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/TCAFK2193556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d6314532fc4bb3ab9e94570f5e7b2ded86ee5d09eb589ce3462ec7bed9ced1. 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/FR10S1514613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405575d094e336adb3d9e2167a2fabd0fc0e05d5bf4b0d041d7d85c53846e4b9. 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/FR10S1514614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb14d0b6cc227483de9e73f1cb62c95f224f91a243ef1874de46c256001bc64a. 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/FR10S1514615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093af4de99eac9fa8565cf4d44511000962ba1a9cb5f333475790cd6b8485c22. 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/FR10S1514616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db1ebe6362fce321cc5437078a6ae37e7c81c9f0f1e9efcc06f0f1a402e60c7. 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/FR10S1514617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81b09381e6492e6785b4109085b838322ed275e479db84a1fd00037f33fefae. 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/QM24S2000818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf75514ca8bca5401d83d271c7620a856bec8171e6979668754f5cce4eaf8d65. 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/QM24S2000819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5424a40423f7367c3e7dc54e08bbb35fa21d78447ec6087eec9bf8fcef74af4. 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/QM24S2000823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff17e01a983ec3e05c143cd98a5127da8fecf743ae63ac55cfd10e2384507ff. 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/QM24S2000825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5954bd3c2b561a1ab3c97f23ddd2558a579174254d5a14b39c0ad9271e364f. 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/GBCKB1911201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45da6c0ff6e8a1c0403c35ea4e4dc9109becc231a60fc07ec0df8c929c7fd2a9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBCKB1911203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c37d894b8b188ff8b32cf1dd5d217f1e89794c9c5cba1f2e4bff10f89aa237. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:44:37Z), 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/GBCKB1911211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169a1c3d65fe7339872c496deface467c69b7beaa38d6c9d9ecb916d991bd648. 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/GBCKB1911210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74121129f8e4973f22ad6feb19ab683105a072472218659466f6def2aa22e697. 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/GBCKB1911205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c3df0e5cd2a5f5c93661ed5a979037eae79d16abca047f06727e151196a360. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USA2P1834772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08276aec63be91911bc1067b5e4052db3389c511d7ce2404ed2f63c48bda51e. 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/USA2P1834774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9a0959240a9043a88e19b8cd4860c983a7ec0737e6c4242535d37872df3d09. 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/QM24S2006199.