The rune is called Thurs (Old Norse Þurs, a type of entity, from a reconstructed Common Germanic ) in the Icelandic and Norwegian rune poems. In the Anglo-Saxon rune poem it is called thorn, whence t
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 0xad0122af361cf3442ef17d2732acf612f82f2267f24d50bbb7218bb0bec2f550. 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/89f921bd-6bc9-4f04-920e-1abe2776c2e1.json and https://artists.proofprofile.net/proofs/artist/89f921bd-6bc9-4f04-920e-1abe2776c2e1.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 0x5be3e5ea2de88bbbf1c9131eaf874c0f27b66860ce37ca8aaa984e0430d27abf. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCACG1546056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe491f14493d77b5ba8da6348e25be820c94be898ff6c2f1a3a9852622b959e6c. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCACG1546057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94521a9bb32d374c00c2ada8b081ec8bd66023d7164449244429e750f8dc5f5. 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/TCACG1546059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a937423208e5306d31ece37f2c597e59cc68cd7389820aeae2e782ad5ccfef. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCACG1546060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df466dd71c4f3eb1eb80efe8430259064af8f8feacccbd2687fd3761ab67218. 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/TCABL1358517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70051b733d5ee5bd6e5d5c105c63ecc48fda8dad97936f98c59b78f246c68c5. 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/TCABL1358523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ccb3c0d7db9cf6301b192af2c95ed8963dac5b8acbc77a0f0572e1f2a51801. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCABD1247338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0167bb77e22ca0e617df5960cc12c90284551a372f8a2d55e4247738dc324bfd. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/TCABD1247362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfac6205ad7c5624b5e4aec2cb6befa814bf0e64ffde1b4d2720e34e0d79d174. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCABD1247366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3da0c48cd72a221e8a97b3aed8147bdc3425a9f203d0cf3f02ec7382f1c460. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/TCACD1527716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa917135f84fed2007b52c826c90d5371371b69e28a3630d4d9f0c55175aebf5e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCACD1527722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34219b3572213caff924d6c916c5a1cca37bc2c78b4bb8677904af2bd5c738e3. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/TCACD1527726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e9766a487d3aee1c2fbbea44a79875711891d9874159733b577a091e331395. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCACD1527727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738fb04b3297cf60e34c0573149723e12a86369ad4992c6fc4aee9b817f3915c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCACE1582594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3069472545746c286a8367fbffd57daed0621f736a441438e75610085f9cda5. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/TCACE1582603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb382e1b4899fb5cea1384bc7dbddc02d9f831c94a5d4c9f1e7198ba38c454ebb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCACE1582609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73259781054cb450fa6ce3d1e7c8e37314cd679277613d0e7ca52981731a07d. 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/TCAEY2009824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e6b802b17571d3ca1f2da4dfff815ab9d696ca85cbdf9b131a80ecbef1b95e. 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/TCAEY2009832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b67f5bfc9966b5f6383389059955441948aa80dc1dc7f33695a7c0b79b4d06. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCAEY2009836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5401502e884483a8bee8d7937242457a2514a1093b275ad76e36fab8f7e9ab6. 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/TCAEY2009839.