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 0x180ad4267ad5bf8428f8f8d3ca4ab77622bcd07efe6d2437600d83cb0982dd3d. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02a2bf84-4851-4954-866b-b18ea1b70831.json and https://artists.proofprofile.net/proofs/artist/02a2bf84-4851-4954-866b-b18ea1b70831.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Leul Aswededegn (Ethiopian Contemporary Music)
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 0x85973fad3abc0afeb48580f40cc2efafdab4be51e47f839b95578b16db833950. 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/QZDA72559859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641b4ce63bce5ecac73f14e04e6f9188ebbf99c7963ad1a8ce8e9907346f5fd1. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZFYX2517749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3412f14064bb9a6832ce8e4f0749c2e03eea98dc5b362ce825af1a55b8d7135. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:05:42Z), 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/USCGJ2444033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf0db193ec78d0cb5565cfd85299e37b9ebb435768c47373db7b0bd8d80b91d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/USCGJ2444035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c275963f6d8b1df8ea4d40b1c6dd8d54b3a753f6d0c256da938f12db391d80. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USCGJ2444037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6bd5b87431b7f731ddd9fc82b65cef4cf03a0cd3331fa23ad160ac0ac4ed4e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USCGJ2444042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007f25e35081cc45c1b9721128268eb20595e8991c61297b025d9a8ba8a2386b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USCGJ2444044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c401e5f40d8dd3ada0ced4d4bbad7a1871fddacbb3e9d61c5c567aaf41d437. 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/USCGJ2444045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff06f876bc04b13e89c7cee98796e91962ce9a6d0dc52d180ae01219833caf28. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM92248551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533c591d5d10e89015a5098d5cb92e3ee97475161e686842c35765b1052c54ae. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM92248562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6daf28a441ac0febce99b0d55a953b541a37cf6ef4590f7d38012d13fa782d2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWFT2554841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63426e66be29eaadd7f31525cb1927cca7c6505f4e8f1e33eefa8661e825a693. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:39Z), 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/QZWFT2554842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5201fba983e8b6c4aef9ec4f70c47f5766f0e9a1235c1f7fc96ab803335d9c9d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFT2554843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9b16e944271f8679cb025bf6cf8debb34f2f219fefef9d2125074d57419422. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFT2554844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09802838a8077ccf53474ccc97741015543598b137dac96dc12a8d2f0d48d0a3. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWFT2554845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7a97e15cb4671236a0b6995a2cf91d09d48ce9a36cea6a6ec68e77c4b267d3. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:58:40Z), 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/QZWFT2554846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292f46da671db557398ac0306d3bcf5ac658426acae5cdec6300e15419fbfddc. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T10:59:51Z), 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/QZWFT2554847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82153aa1b3a44662cc564755a87f16139896ba94bdb146666d29f4b9e57b92f5. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZWFT2554848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5710748eecd439e7bea96cc17ba2ff866152dcda42879a0cd581abefc8b46d7e. 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/QZWFT2554849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad646a2062a96f60b497b07fd1cca9f4ac2d1818750c90012e5aa9745c9b7f1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZWFT2554850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6ab090aacf41be3e50d5b4e05b2691aea352313ff93110205560c0f577c0b5. 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/QZWFT2554851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6751da5299a60391a0736bc8e8b3267590b98397b4c102428f3635f02c60547d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFT2554852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15764b80a2f2818d181664912eb8f8dbe76baec948dfa6f37cc04a5a13866bb7. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:20:21Z), 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/QZWFT2554853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcd31332085fe3d321ff3916c36fad43c594fe108eee23251cda92fbf8ec166. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZWFT2554854.