thumb|"cempa" or "cempan" stood for 'warrior' in the ancient Anglo-Saxon texts. A champion (from the late Latin campio) is the victor in a challenge, contest or competition. There can be a territo
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 0x412b62f5f4b2e47c552a497b4960ed69292e5eb487f781dd7d7c865152349d5c. 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/ffc7ecb0-56f5-48f7-8ae1-e8cfb8a3585a.json and https://artists.proofprofile.net/proofs/artist/ffc7ecb0-56f5-48f7-8ae1-e8cfb8a3585a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Green & Gold (feat. Charlotte Plank & Riko Dan) [Champion Remix]
Green & Gold (feat. Charlotte Plank & Riko Dan) - Champion Remix
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 0x0afa175d1e705d5ac43e0e303c5ccf65dfb57313b79eebf8db8c3b0ff6ef7e6e. 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/GBARL2400486.
Green & Gold (feat. Charlotte Plank & Riko Dan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6b5b5bc6655f7bac30becacd63e366e759522125839e2b249e2dc8e1f38c9b. 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/GBARL2400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3572a892b74c28d17c32f39250c36135b3bc0169da3294aa0ac708c238d9c3. 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/USA2P2430758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a59124176f4ec5a23fe4f95e57bf8e4647b300e319da4a3c615623cd823d9b3. 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/UKQNV2000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc96d03b3867efff46dd1c48950529ea6cd275f0c50e9adcb7091b4f33dd5b8. 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/GBAYE2100462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e7b447f1b6f45491c63af843a8c60c48bac99a495c2d10a96b3909f58684c2. 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/GBV5X1800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9483d0e51ba01f26c7db6ebc4e003d5f9bc53c58ae286c4ef3645dce5ab8bf. 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/QMFME2073906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ce4e56479753ee8b6dda137aa96f637b9ffcce736576c6ffe0a623c57c9154. 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/GB2LD1700274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aeb421adfb4ecb56b4591ee4823394f12a43223c49efa70403aa76931fb0900. 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/GB2LD1700278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc861482385cfa9a391b170c1d5f2df6ecd5a930f975deba286d65f11a88a3ba. 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/GB2LD1700280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4524915fab07a4626434c678e0593c51a4ca34f86b9ae08cd4682006057ca509. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QMEU32102010.
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 0x8b6bda31d53863b31aa83f89389d216829159f3195367a27abf37504e28aa85d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QM6P42002499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bc0ab19e430fdd69e9d6bc34fa7999b688cc8df946c4045f9d73b65a218e2e. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GB2LD1700275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d98b63b0c75b061d469f418382c1bb8a46fc68085e6640fe358196139d08926. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GB2LD1700277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842e9d91bc8283c26b58199fcd5601bc8b7db3c074cd2f91dc534e06422e08e5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GB2LD1700279.