Stefania is a genus of frogs in the family Hemiphractidae. 1966 is the nominal publication year, while the actual publication year was 1968. They are native to the highlands of the Guiana Shield in so
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 0xecc06e20f235f15fa365d6367d4f5a659ca76b0df119fbc9b03adaa6c76cbbb0. 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/866dffe2-87eb-48bf-9f8c-6d92e3b7b94f.json and https://artists.proofprofile.net/proofs/artist/866dffe2-87eb-48bf-9f8c-6d92e3b7b94f.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 0x546ba97bf5c5521de475aef494c407ab6d90f5f66080225a03142097ed8fa535. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/NLX1H1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e2fe5ad3821857db136bbdcb2eacaefad0781903c27076af80fa42c7276af5. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/NLX1H1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9acfb2c0cd732d981bb6008a5d292ed463c14a5dd995313ca14a80c988c4cd. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/SEYOK2025359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc284fd819a281f9e0139c84a65b8d3363b2a17c47cabbe588da34805f8a5dd1b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLX1H2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc284fd819a281f9e0139c84a65b8d3363b2a17c47cabbe588da34805f8a5dd1b. 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/NLX1H2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91edc132737a17200240e5ba7104ccac8f609c66081b1d0abaf016bb30de4af. 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/NLN922000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f941b166c7c4460b77f0554891d8ef40d5d82783a90ee1a3ceccd76cd9e9bd5. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GBLLT2153138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f941b166c7c4460b77f0554891d8ef40d5d82783a90ee1a3ceccd76cd9e9bd5. 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/GBLLT2153138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b42489957c4da5c99c2e8be685c96ac654e0ce39fa24d5370b5417b36d6279b. 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/NLK072100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5ac2e83b98473194e7dd7b73604bb7c350d0818e3323db32c4b91c712f9f8a. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QM6N22231159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b6d193458b5d121b894c10158c1d655fecc6be4c86f3dfc4132946eaa89272. 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/GBLLT2256849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5329c89834ff8c63b3fc5977055e94495b25aabde93a263c9bd3af600bc65a5. 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/NL84P2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d3df813c7a82ca6e279056c8afa4c525bb3a8e1c1500b4467f27ed10afa97a. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/NLX1H2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d1cf379244697e485976801f6e632427b540173a1f103a4e3b405a555d21e2. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLX1H2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c11ed3917baf63ff58d55fa9b5699d9d1048351bd1256b78b4ce2aba176366. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/NLX1H2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8143b2f18e5e98f6c949878d9c7194ab0b9f3c3a68ac8a28bfecc5f9c214a127. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLX1H2200027.