The Chanka (or Chanca) were an ethnic group living in Pre-Columbian South America, whose chiefdom was part of the Chanka "confederation": a loose defensive alliance of various chiefdoms, such as the
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 0x8024af06228b8a8a8f9864b122f72b3b320381254c4b886f45ae601186792f69. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05bbfe4e-70f3-4ba1-be05-7f37cc82963e.json and https://artists.proofprofile.net/proofs/artist/05bbfe4e-70f3-4ba1-be05-7f37cc82963e.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 0x6cae0297bed98ccc95f4cd306a45c3d196a9d682a390987fc8771ec96a210a38. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/HKH142105102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04e884c1ae64fc61accec440ec9fc3804a02336824b8a2a52c8b598a72b81b2. 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/HKH142205103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6175d342254671cb6ae47833bbbeb31dcbe13393aa07b99c09fe21e4f94f5e6. 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/HKH142205104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287d6d4f19dc78e0d23434905a68a74ae2c4bd89a5ad69bc0314f9239f13ddf5. 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/QZTPX2313450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1233a4bbb5bd1878facba986cafb01e0c42acf2d81516b293849a5bd9534aef3. 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/QZNJV2407741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224a78182c3f80129ecfcd48909e1e10add73df6e72a9c1f1a7d20fee0dbebcc. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/HKH142105103.
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 0xe9bd485bad76bb524e6b60862cdc2154eb0a989d8266ab00c8a3e54ec75aca70. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/HKH142105104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216ea49c33d90cb1f479afc31e7411b196bc9c9c48a9b9c109229b396dc43dff. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/HKH142205101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55df8d42701f073b039e996460e7064c08345bbc4b1eb1b89db04d9df3e51b02. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/HKH142205102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bbb7db4fc9afa88f755cb406ed9a52559c5e3205a442d8544bdb161b0e7301. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZNJV2407739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a9474eefab59f7fdaa76154b7a6b59a41fcacc707580c7ac5b83baa11d1684. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZGLS2362110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd797332ffdf93a6f01506fed8eb8cc092a5f5a0b94c8776ab3883f36abb0d0. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/HKH142311901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771e2a66b4abc7393792c4fe31eb6b2392bcb41f83541c2e9417a1a05000fad5. 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/QZMZ92334461.
世界For Love (feat. Luna Is A Bep & CHANKA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6b571e63c817a6dc7b98dffa4cb691a9bd71544feae4cc02a065d029f650b5. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/HKH142210501.