The caracal (Caracal caracal; ) is a wild cat native to Africa, the Middle East, Central Asia, and arid areas of Pakistan and northwestern India. It is characterised by a robust build, long legs, a sh
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 0x350a813933b6253e8083604bf89be20b8df943e527ee9643a8f6467c24dbf846. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a35c50cb-8a6b-4481-9d15-2025d0ff95ce.json and https://artists.proofprofile.net/proofs/artist/a35c50cb-8a6b-4481-9d15-2025d0ff95ce.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 0x530a2784d952e5324724a7937645c4680725f6a8822c6ec965b260f61b09cabe. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SGA651401801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35481619b8e3af0d7406222451cba04aa874fd2b1dab21ec2ebed72378bee9ca. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SGA651401802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a283119e58b898c476648ca165c4855751a5801c302ecd83d06c17b4f22593a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SGA651401804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c623dfccb1c93e241490ccfdeeda0d83292f46b6713ee5c1356b3c71f8c3b8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SGA651401808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf980625fbec0c34f929ec0953c0b92b17ed708e1fcca3d9a4e391c7b580b24b3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SGA651401809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895336bc794be29897375f98ecfaf89af52b5e1d39744d20da85761690856724. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SGA651401803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7aca49b153c5a690a2a04fb1abe82c9c05d54d8f3b238ceea26f20b759bac31. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/SGA651401807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3c5efb02ebb028655e1cd65fc290c22fead76bfe5a6b51eaac259585872ddb. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SGA651401810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef63c15c0df1229e5ffc4d37a2fa3650ee76c4b2b9e51cf369ac8d71848644a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SGA651201302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06880a85c8ed37e69f8b348f4e030b6a580e41a9431f5ec8b9284ecca17ca936. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SGA651201303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521f7f3d7d80cc60059beb28e1efb44e3deaea5bb2378b5ec260af0a6c94ddf5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SGA651201309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5add2d217b0897cc15155accfb2a976d6cb7538f869b39aeb1fc01b6a67900ed. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SGA651201312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37afc1e0f1d95c8e89432d9dc07c01724e441d8dd1eecab5dbb4baa8ef7e8a1b. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/SGA651201305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f01dd27ab9ea9e15debb7d84cd17d7b32f742bdf7eb26ce7ecfd6afd897efe. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SGA651902301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2611a892d1e091c2bf3e9549c72e966af2c885258ccfb24be2dd22e1a21ab92. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SGA651802201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c988c9d124d6b2a319fd2546ded516e1dc7ca089e486db4b2c80f4e91091b42. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SGA651802204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d4eba66b907d446342eab3eaa95d7dc41a6cc2f89b5e237ba9051b9dec453a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/SGA651802202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa697069a0ed947d9bb69b26f2db6ef61d7a710044f1b383bbbfd2444fd6860. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/SGA651802205.