Rhiannon () is a female figure in Welsh mythology and a protagonist of the Mabinogi, in its First and Third Branches. She has been described by Ronald Hutton as "one of the great female personalities
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 0x223bbbe4607bb101b3656aa8a7c46c8452620764ef6ad2571cf569461384eab7. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31085a80-e0d9-4ba5-ae56-bf3aa0906fb4.json and https://artists.proofprofile.net/proofs/artist/31085a80-e0d9-4ba5-ae56-bf3aa0906fb4.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 0x5de6cf1bdc04a8826f4406e41497da63e2adba9a6c0e4161de6110e67b863b61. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEPI82408200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30139e48c22d3f45366cb27c2ef06fa2feaebce31173d2897a4ccfdec75d945. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEPI82408201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596a8489fea849a40a4e6c1012df29e74cb05453850e247244d28f2060a523e6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMHK2482336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0f0e05d65e2a1cca7d17cd0b726c395e9fb33264839b434a0546fb83dff450. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SE57V2403331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62630b4840943d0a5c224da9b3df361965a807c5aa4491e89018b4232e931e17. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:47:58Z), 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/SE57V2403332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9704e5819436e8953c4796e4bd7f6d30d870f323d4778c77c42afdb016d99868. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:02:01Z), 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/QZS642404593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d26a87d0ccaf1fa4a1edb1bbec43cce5aeafe31f89093129244a00f7ccbba6. 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/QZMHK2454264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c3a4a0d0558ac6baa3077d177d9c21d4efc5a47dbe95a8ecbc79d4b0bca700. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CAQOI2410187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f683e65203968560b54179cac7d20e6daa772b3a2de30cb73fcd555aa634a1a. 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/MXA3V2400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf8d9ee722d3e0cb06df34192e531dce10b7faed5f3a7325c901f256848a499. 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/MXA3V2400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8e95823745bc5c67f3774ceeb5e4b4342bc0ac947a8a31375201dddbc0965f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MXA3V2409744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8300240f04c2bc229d28b34d2be589bfcd3be1aefd856a99240ee9aa777890d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/MXA3V2410063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d185054118c9ace78a1e74fc4c3464dded949e827218424a18fe36bd52331f. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:55:16Z), 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/MXA3V2410064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cd3b3e236ae9fe6a08ece66ff3cdf3f06bd79268da2e63edad9a45b375984e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE57V2408775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dcb9f3f7c0a381b7bf6c3227c154b6bf035eba17f1ef23f8c02175f12eb5c7. 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/SE57V2408776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fc0c9ade75b1f66ae6f9f05bd61477342a1c93de770c2315240ad241c5cedd. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:11:52Z), 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/QZS632535229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b59277065841925f25ac60a6cb4e07c2579ef3298898bc3c6a48824e52fe764. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:01:51Z), 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/MXA3V2435152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17b40bf79794e1564ae8186bb9e2804b56ca6bd1601288b23277e94cb39d256. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/MXA3V2437019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0429e60161dc66ff865ba41737df9b97f430fb8ce17429a90e7656fb19b3f5. 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/BGA472516070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8a0ea2ef7289381bd4f7f5438d202e157279f5c8e0d44b6b8859018a6f24c8. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:49:04Z), 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/BGA472520843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5349654b0155d31eede155a4c08f82fbea04304152df06d4a3ee910a1d7a63. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UK6822510876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8487effdc02bf99a5e4bb38d294cf336fc2bf5133c33d7e80ddc145de52a00. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/UK6822512865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10422a1c44001f74c6d50a224b79db54b23af2ef8a4646654efdb90acc70484f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:18:23Z), 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/UK6822512866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a14480e9247d9a4c739aecfc0dfb6c960a04f54722dd54d84b07f975bc90b2. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:37:53Z), 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/CAQOI2529244.