thumb|The Necker cube and Rubin vase can be perceived in more than one way. thumb|Humans are able to make a very good guess on the underlying 3D shape category/identity/geometry given a silhouette of
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 0x05e78e26e341504a15d33a0da49f138e433037b3489a738df57a94bc27f0a145. 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/35a7427d-d331-4c7f-b12a-b4e70c75c3df.json and https://artists.proofprofile.net/proofs/artist/35a7427d-d331-4c7f-b12a-b4e70c75c3df.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 0x363200cf4922dfae594d9601704a431259bff28e41b523f10ddff253e280995b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBKQU1961369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd0c8883ce155be9b6a25b3223e36b0e4c4f1d493c4d2411ecc753ddfc95ef9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:59:13Z), 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/GBKQU2022259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4ec5f28f6c01dd64e8df1a5832eea2ac9109a553ff613144bd1387f96ace8a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBKQU2303516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512293a77c80227f2a524b7938481b2bd5db4aa71613429f01ddf7bd7f384c5b. 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/GBKQU2354098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad01633b761b466e9120a572155d4401bab6c055a1a32abd7d3a1a3586ee39f6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BCVO92300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c122524a51e5f42d1622c9da02f5ada4a80b52b5ccd94bdc963578451f1bee1. 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/GBLV62401244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f35230d39b6b794f719cbaa713ee47cc8132eec8e0a46ef11599cbde5a2ca69. 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/GBLV62401245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31959110fd12083571a9c55532aa5779f5a6f4ea2564ca395c920765ec0f386. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBLV62401247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad90013c26f23fec942a5ff6ecd8551e7fe4f8eb31825b10766777b78ee803cb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLV62401248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d30eecca3a32909067eb52b7a58f6992c3b1efd354b3eaa4d2aef377d1bc671. 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/GBLV62401249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592551260dc985da6361819e5f2cfaca6a8c08813d180d25bf5800f263b39546. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLV62401250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5054a1abef8d1a47a86bf88ece3575790a151d4ba3ef8de90b563c3e1bddbe. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBLV62401251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83547dc9e0d049bbcaf56f249a2c07f433d34e640a5849a2da8dceb5e72e6590. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/GBLV62401252.
Universo Paralello #16 (Compiled By Swarup)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1033f1383be047c80fcb16130d0d33e876889d02f9cde0f967b628bc0a877ea7. 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/GBKQU2314146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5783a00aa420d7e47d5cfc836d6332590944a3b4f692c184558869e9cdd7187a. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/US39N2300956.
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
Feed The Feeling - Out & About EP Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbfb8d247ce4ea650cdc982711b76ec725920a63fec9e522be6243b2785ccf5. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBF080300690.