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 0x42870e1181eddd82ac4be00b079865bbd81b08269405dd014d1e685f40daa27a. 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/36897e4a-f707-45f1-930d-e011ea3ba036.json and https://artists.proofprofile.net/proofs/artist/36897e4a-f707-45f1-930d-e011ea3ba036.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 0x23c5968cf56635a4a75f3c67ccefab6d1d3269f8c68b8e5aaf28b723a5906567. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GB8KE2418447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc4f49939f6899c609f33431ebb2300c02225dfce3ab37d2db98ff6ae097157. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/RUAGT2434179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b5df18cda5447c5e05ed6dae0d60185de0d68c37d72a050bc8c8c9a5156049. 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/GB8KE2418462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523187318573f26fc23a0338582683ea2ec87020fe505cbbf302c46aaa480c5f. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/GB8KE2421282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d5c394a8b4410cbb02a5ce03a19443306c55e6c24b844ea8e6ece47c7ecfa4. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:23:35Z), 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/GB8KE2422369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed93d7215f2b2d06f5d1541bc94c5d108d5efe120c379b21cac5c4016c61d63. 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/GB8KE2422886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde0efaecc30eb631b9d1338d2cb82465f378d24dbb4fd19198dadeb76819eab. 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/US83Z2501493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6c4efe0783ffe1d3ffea0fbcf6f9dfa82d17e9bb167442c2b6a5498f406c33. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/US83Z2501496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e367af37514d40d0d0cb79ade552bddfc942c8c9e6350855eb4889b551dcbf9. 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/US83Z2500483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5a67c19eb7cc6946fbe736916b0fa7469947dddac0d186e28289f0c9bec36e. 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/GB8KE2502895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bda9eaf67970bcb14414b28f55cb50a947a4278c2edf8fa48564ba89fa1be5f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US83Z2509634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af6b68c8559c7c8173f4a92f4236cbdd217bb96a007f4e518166adc665fc676. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/US83Z2522237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6c5d38ae1771532c0dfd38c12b24e72c265798fb1eab832546a5d32921ad9c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:14:55Z), 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/GB8KE2511958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6c9525f85ac3c782ee75a799ae820bf797c81a9ad208a450672240578b3076. 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/GB8KE2513212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc918441a613cd82fd51f314db63c73fb89b9d964a12c5f92dd2f8be69243a9cf. 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/US83Z2544218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62a1aaac43ef39161beb3bfba31e21d17e003f8f9f625dcda12ba3a839a0ea5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/US83Z2544219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8ccd027aea47d53460f3e960be735404f2207400bfc18f152c0433c515a7f8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US83Z2544220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4812bad1cee9fd8672a51acb0fe13cc155bd30532d6032a569d89767f8bf5be0. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:55:07Z), 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/US83Z2544221.