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 0x60639192f12355113fc2ae6c7550ace11b951f9c2f82ff4100627cc60d3e52d3. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bffe4348-966a-4ea2-a9cc-27f4fcf53708.json and https://artists.proofprofile.net/proofs/artist/bffe4348-966a-4ea2-a9cc-27f4fcf53708.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 0xab14556eec7f90fc1cd080bc1c9508ae140967511c6ac2dbab1385dfc35f98cf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZN882336141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae48583b6a8ac48bcd8137fc595e188cc17c673ee056f51bec1c3e749a38b426. 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/QZN882152300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d938f743a161411d41e0f993a36b02887a46fe20ddeebc0e1b826afb2024d0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX762469190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d938f743a161411d41e0f993a36b02887a46fe20ddeebc0e1b826afb2024d0. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRX762469190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781d770fd133b0a1c4d29a8d7f651a76f55a68d9860ac6cefa506402e28a15d3. 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/FRX872425712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e379e9fa6cb9fb65e2cc952c2301d6433af304b3200479d6fa85e0e9144a524. 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/DGA0M2405904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5c3b3830561258446f402ed24d4852ed6f386939f8635de4632a59dbbdd8a3. 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/DGA0L2467788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5c3b3830561258446f402ed24d4852ed6f386939f8635de4632a59dbbdd8a3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA0L2467788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b02e1d6bafd6cd67bdbc57777d2647ced274dc6f954ab829be2a4e222198391. 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/DGA0R2429808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6562bbb612d1b8db691d7fffe59f1bbb19c6dea42982a4fd2733fe5d27c5482. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/DGA0R2471544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bc257178ff909abb50333da7c0b22b22ad4f3395c4b929880623b4d287fea7. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/DGA0S2464983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5420bdd247cb1fa789279f0e1c6d8fb4017a5e57a2e547385ceb8805498d3956. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:58:03Z), 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/DGA0T2411988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678a4f69d2fae611d910e71df342bb62e06e104bdac45ddec67752c9d7cb1762. 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/FR2X42500332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678a4f69d2fae611d910e71df342bb62e06e104bdac45ddec67752c9d7cb1762. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/FR2X42500332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbd94066c56efac0fc982c62465878cd4463a6f6fca87c604fe4a6cc0b1d47f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FR2X42510631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbd94066c56efac0fc982c62465878cd4463a6f6fca87c604fe4a6cc0b1d47f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR2X42510631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032e69ecc4d0c947ad474da3c841160c2a4890e8f134100731f82b40ed79f6c0. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/FR59R2559121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecb54666a59d835b8fa4d64895527c23ca33366bb4ae46924acc2899cbf536b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX202567538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf516a3b8e396c55d5009190ddc19092be1aefc8d0170e0beb674582ca77a11. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FRX452577382.