Dyce () is a suburb town of Aberdeen, Scotland, situated on the River Don about northwest of the city centre. It is best known as the location of Aberdeen Airport. History thumb|left|285px|Old Dyc
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 0xe589d6519bd97092dc01bfceb786c4f1db7e32c1f9e9507c16e228efd54f74d2. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fa5dff2-885e-4d02-b183-82e91ee7bc59.json and https://artists.proofprofile.net/proofs/artist/9fa5dff2-885e-4d02-b183-82e91ee7bc59.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 0x888a153918b2efa9c8025c22086fa70792588c8196fffbcbffa86c0834c47538. 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/USLQ22107369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88e4c2919a839f4a7c280575373ec1ff1ad5c8835327c5f48e02254e44370a1. 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/QM8DG2493977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296ce8af46c45dff7a557765fc70b4d61981ac4931630ea17eef64516ccf486c. 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/QM8DG2389242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bb3534ad18d18b44bf0568489eb95f58736b3291e9c357f5968b81ecba008a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM8DG2389663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6444e9a2b9ca69550640e90df7a3c6acccf3fefeacf8b69aae1e285f949bc841. 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/QM8DG2392044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac56ca16dd60f7b5640906c82c936ae2bf927887fe9ea7c2352dade48a439098. 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/CA5KR2368450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6230dd79354bcf23e3f8cee26dbab4e6f72137e2a018f4cfd9eb98130ae9727. 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/TCAGU2300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd386549a36b83e5cc1da24d3f8077190a68202cd60c007534e45f340e126f0c. 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/NLRD52264037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0a6df57f8a5472afa702c888c88a9a7a40691314448f9d99e6a8fe0452ff9e. 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/NLRD52264036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b227a251ee07e0d93a6fc4156d0baf340eb63c13f264b20e5f448088deb544. 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/NLRD52264035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb45ef5883193fa8c9bd3d94151bb22eba7a1bcd03654fbebcddc9a8ee5b9dd. 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/NLRD52264038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d791cb23d5dd16894099682ae5c13ccf13e7d0fec0eb73fbaa48b2c07a1921. 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/NLRD52264033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebd3482836e3c02111503181aeda1854fd72210e8b29f1bfe2464905de29eb9. 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/NLRD52319376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dce2c88915d8a1e172d6630b6811b0c4887bfaddbc5e919b84d1f978d97d7e0. 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/NLRD52319377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a695434aea0ca26cb383a8ea34a7192f6629c0bbb15019d106ae34251b5a7d. 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/GBKQU2195411.