Texas Hill may mean: A summit or ridge Arizona Texas Hill (Arizona) a summit in Yuma County, Arizona California Texas Hill (El Dorado County, California) a Ridge Texas Hill (Mariposa County, Cal
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 0xdf40c05100dbd3983b3e4b281c2fc4571448c5a7ab1759ac479cf99b458e4cc4. 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/548f23e6-3b51-4cf1-b3e8-94eae0c6a688.json and https://artists.proofprofile.net/proofs/artist/548f23e6-3b51-4cf1-b3e8-94eae0c6a688.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Go Tell It on the Mountain (feat. Home Free)
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 0x14b094088a5c248429d2ecc7584f916e503a8a5ad17999e04fce9ae3510d6a6b. 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/USA2P2145058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b094088a5c248429d2ecc7584f916e503a8a5ad17999e04fce9ae3510d6a6b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USA2P2145058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5b975900ed34a6f33670ac3de46f1f9b3014e33f89dc5967d895984dbef59f. 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/USA2P2138202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a5b5175c54b0d6f1b5ea8c23459f2966a8bfefb69a1164bb96b3978dc692ac. 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/USA2P2138201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda660b59bae31415bca070cdd15877e0be6d98d5e5615a884a2df69fe1b9b7e9. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/TCAFB2079522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5cd4eb8ffe232492576dbb188e0396cee0d256b657ee5568e72361fe3279d6. 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/TCAEX2005244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a3f6b3c71a793080ab126c6cb783d4542e78dec58e66c8bc0c72831f776683. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USA2P2138197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bde0d3e516fbbfea9c595e572ee0519cc48847e8e045cc49e00fd2efd14068. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/US39N2301547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dde560dbb81504675f4856ca23ab4f6fec9d5d3245328a93022a38f0923bc7c. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/US39N2301548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a482124b5ffcb442adaf413635bf52a80e104bd4cd893dc0cea78e73da75420. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US39N2310912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4f896dbf7e6085a9c3e457d96ffbfa0d88152e5468b142808761071d0b5b80. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US38Y2305069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734aef49d33b290667d2d6f593bd072446fa54feb5d7d1d315778210b71fff0e. 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/US38Y2305070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1f7ece95ef8a145a34fc8e02bf7765fa015655c98508e53700d14a75a96bab. 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/US38Y2305071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f820288a169258ddb208636fdf6a8f6e7f7ea093ae649187f9ed0d7b76f1935. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/US38Y2305073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715ae69b0a2d178310e724bfdc6f2b60ca736f8145c4dd85327cc81e30c646b3. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/US38Y2305076.