thumb|A plate of dolly mixture Dolly mixture is a British confection, consisting of a variety of multi-coloured fondant shapes, such as cubes and cylinders with subtle flavourings, and sugar-coated je
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 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 0x418db5a41808127f50396fe93763850deb0bdb55de05dd9a28d753db922e667f. 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/8a0f56ea-9207-4117-89ec-35fbf2bb5b32.json and https://artists.proofprofile.net/proofs/artist/8a0f56ea-9207-4117-89ec-35fbf2bb5b32.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 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 0x8c753c8569b46b116f33c613455c743d9cc6c8b26d7e22289a59c16a1184572d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBC6E1020002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8df1167f189a7f29f9751ff1854e8d288afe0cf21089572017c69605e2337e4. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBC6E1020003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e041559b4e31588b9131dc0c397330cfad89d12ad901f594b04eed0fe68beb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBC6E1020004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62f962d7209867269c0c8f9a7a7d606024d9a49d21c5292d369329ce52dc0ec. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBC6E1020007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebc0469652f2ac62b31572bbe9b87fc9fae13a9846d2cec3426e1193a1faf62. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBC6E1020009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cfb160f63fdbfad8c2dc4499a5bd0854235ae046b2d1bdbd321070afc51e1c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBC6E1020011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fdbe06d26ecce103bf594cfb8dd79059d28259cb79b6ddd50c49371cfa11e7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBC6E1020012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1860394496f1a9dbfc6d15c8cfceca0f73bb4ea1ad69ca62e6ad14946853c5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBC6E1020013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61a49241eef325754e8107790ab4cf793c7fff63c27b01c064f4ed1cb17c52f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBC6E1020016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4409e3d62c11ae155d1e9490b1f077a9fee237796d6afd50de05a5cc8deb68af. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBC6E1020024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9b99125c04fa191bc1ac897e57c472fbbc37989e9737cc467c604700efcb6d. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GBC6E1020026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb283cc0dfdac082c8de128468cddef3da791af72725eebbe66fed4abdec2677. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GBC6E1020027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7379f2324d3ed7ea836731d7af5fb0f06a41d41ec243f2ca897c8c9e9456ad. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBC6E1020033.
How Come You’re Such A Hit With The Boys, Jane - Alternate Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb45a570f3af0df68fafdfb12c239eb62294d0ea011ee4b0b2e3b26cb00eb34. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBC6E1910005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0914d239d8e5397511f9caa9927930d860c57024c55cc009c14396c85a02bdb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBC6E1910001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205135e72a4209a36f66b9a424798d07a2f1a913a84c0e00c819185ae67dd40f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBC6E1910002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88202c0c9008a89c4b5c9a22a50672b25f270fbece3cbf3bfd654fb0302757e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBC6E1020043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888c6742a281de2dc769cae22c33fc25523602fc9354af0c6fc2a1a8796d3c0f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBC6E1020047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51215b6d7e9bc02dff7578afd842ac803a46cd0898f923d4c7cab7d2e5174415. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBC6E1020051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d58e49c3b960904286d68bc9066dc85ecce1cc63a52bd3b30ea1610142f7ec. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/GBC6E1020052.