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 0x214b403ad26ce41fafab3f6ec30bc004997aee440bbb4e28c39ca0123031b817. 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/9fea98d6-8865-4a6b-9a6a-71a1c05136d4.json and https://artists.proofprofile.net/proofs/artist/9fea98d6-8865-4a6b-9a6a-71a1c05136d4.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 0xf8bb371aaefceb3a8a1cbfde140a30eb65bba0a563bca0de9c30a900a6900174. 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/USJ3V1195048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403a0c31f25eef360ae5fdf7110f03b7be5d31de1712f941c6004a0d196e8c16. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCABX1455382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a6dcf2ec3275441964a9b94790dae3bb32d92c96f23cfd48b2c02790229842. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCABX1455383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bd6215be3d14a1801b515c30057ce7147e91a4db73b3432d0fc285a8aa23c4. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/TCABX1455385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b3305c40c13fed6db149556d0dc84e29e0d3faff925bcba538d902bf5a6090. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCABX1455386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7188cc015a5115f4191eab96c6a22dcc8ccf69adfd792850554c27abf400775. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:24:56Z), 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/TCABX1455392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5869305988d8fc39e3e584fb71a0249b7a7aa3f342cbeba1b3adcb6528e5cb9f. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCABX1455393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619ac442e05a9f9effd40d162008649a3768f11652c020d09fc9a6a2069e7e13. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:36:29Z), 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/TCACE1586956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9820d147711f5f7df62d2a24a693ca0817db2f8d9d6df3b345f1ac1d25512dca. 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/TCACE1586957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a6a722534f9dcdac5bdf15cc40f0431fb21c361bed3842ea0a57efb50f10fa. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:14Z), 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/TCACE1586980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339a072797bf31367c32c0ddd5208cc9d8a708d37af449a3d3566b7baf8d54ec. 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/TCACE1586987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29782040ef665faa1332d32aa6fe58a3d2f212c084fd9f53773dd80f354e0aff. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCACE1586967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e243cecc8b84101d998dbae6c3b25028a9c1b1f4d9b2ef6857708e4966e4fc. 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/TCADE1779822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe804fce62abae204e640f4d9f4ab7ea33cd0af129babbb40db97b560eb2891e8. 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/TCADE1779824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a73c7460970c2982708d631b427048f37d34e8ff6b7f5b17518a8d53c8191d. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:08:15Z), 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/TCADE1779825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968bf4676c714417610d4cd9768bd12ecc5ed0eae00d23e867b2c737b81cd1ac. 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/TCADE1779837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd841ccd447ee7f4b5853905a16f96f9cd1077fe51730e2f8f351e70a79c2b602. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:06:26Z), 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/TCADQ1871622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5425649d22b4fe339d699f21bdcde8ac45cf1100a91d4e720c3a90a12d227f50. 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/TCAEN1952668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70959b703e1c95ada37130d38d543b90068509a69dd97108279ed9cbc92608be. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:35:20Z), 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/TCAEN1952742.