Shadowgrass is an American progressive bluegrass band formed in 2014 in the Blue Ridge Mountains region of Virginia and North Carolina. Composed of childhood friends who began playing together as pret
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 0xd9ebbd5c927c7c5b447211d8ed79bf0cb6ce03954c51243c46d92995ec57459e. 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/43dbdcfb-603e-475c-ac6b-dc0e04fd9a3f.json and https://artists.proofprofile.net/proofs/artist/43dbdcfb-603e-475c-ac6b-dc0e04fd9a3f.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 0x706c4243654d520a72863ce6b6ddf0af9961f199a0e0792d56cbdf6adf72144f. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USL4Q2102720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e17399bea75c01790ad001de3b72580ecec1beddaf0f22f9dcce2754e9d251. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:11Z), 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/USCGJ2234357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8e7dfcb9eae247d52aacec6adcc0815a88c4e2696151250d21e6c4010a7bb4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USCGJ2239527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb213de0d324e474da6e02938759bac9e5a4d853c5021bf867d639740a6963617. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/USCGJ2267008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7373615be4a9d51d130ca05c2f86670785585b39cfd698f64569f5400fba03. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/USCGJ2267011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf701ad557c646ec0676a3054bc3a6bbb60299b609f855befdd7c55ef1ad8006a. 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/QZWDD2425115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253c977cf7374af4a41a4f1dc7a3501e25173c360c3cc292221ddf62294acf52. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/QZWDD2426163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa848b8fa6d3e3952b1d99451eab2bf67961895112070d66ff8d82ed0685e1679. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/QZWDD2426175.