Colombo ( ; , ; , ) is the largest city of Sri Lanka by population and de facto commercial capital of Sri Lanka. The Colombo metropolitan area is estimated to have a population of 5.6 million, and 752
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 0xfa446396eb91fb4939dc4f52e7f089065a7a6e22475cfc3bddb629845ca74dab. 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/6a53f65e-b1a4-493f-967e-1cdc42969b5d.json and https://artists.proofprofile.net/proofs/artist/6a53f65e-b1a4-493f-967e-1cdc42969b5d.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 0xf40e8dc4e23904007a0d86f09a997f81cce9a812023da8f94ed68109257155b3. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USLZJ1143043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81bc21d2e9d486e5584bc7b5c336dab7f0bcab784dfd4b150dbc67f3c918b1b. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:39:15Z), 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/USLZJ1143049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22b38088c618cb81da2efd4f2703a9f72f063b0dfa45d93324404203719368c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USLZJ1265697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb107ce734896086dc87e250d9baf3f7c8f6e0f17c63e4f7239e910f32c17f5d6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USLZJ1265701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079b2390ebb52fad8e091cad0e1608ee02e6862e9eeffd87022c7d721b20fcf9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USLZJ1399870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0695be52dc003d1671f580c6eb8ef8448e11a4ce4bcea1458d2dc72b498e9f79. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLZJ1579360.
Shake That Jazz - Heart Player (Super Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd61189f26c845a8570828b732c07cd02ff22f5899dbaf1a0c0f74ee9415869. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GBLV61902230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a724522f9113924f684414cae0cb47e2bd3aa691696bce8cf3b6d0a22340b2. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/USLZJ2165331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025214fb8af8094b17bfa08f3cb15139e37b4224253d5dc4684afda488d5a750. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBWUL2245609.
Through Dassier's Eyes, Vol. 4 (Original Mix)
Through Dassier's Eyes ,Vol. 8 (Original Mix)
Through Dassier's Eyes, Vol. 9 (Original Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e8d782af3fa28180733ba4051ae13b08c085b9230358298e2f8e584b7891f5. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:15:43Z), 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/GBRKQ2597348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acfdaf22d647d4919656f1b771cd1ac33256f1a10ec31e4c4c1485569d30780. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBRKQ2597388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5315db9b1a4e734111ba46ba470b6820598fafd1a0bb97f1a0544ceebf9f8a. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZTRX2504698.
Through Dassier's Eyes ,Vol. 10 (Original Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07b3a774cf6f0e5d6e2adf6e8e82baac1170b0327a1820543c7d9fdfd5b3002. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZZ8A2506365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddef6c127fd11f10556b624cf0ead4a6f4f28b408bae0b4abb0665439008401. 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/USLZJ1390070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b90f95c11d3e8e1f765437aed153460b698f860bf1de727069b543712aee21. 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/USLZJ1390074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ecfb3f6ce35762aa44bb47f6ce3018946e6e3263d209af6642271b70766b1c. 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/GB7EJ1500117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894d8a3e1506456de99c274e9b6aa26ac16aa0a9a873121c6f46aa0c4d8cab2c. 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/QZWV32410803.
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