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 0xd72bc3c4c13c45a8494de05fa37d54da39ac728ef2a038c75fad94294ed821d7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c73b2e6a-c8f8-4a44-b8d7-d1d97acbdab2.json and https://artists.proofprofile.net/proofs/artist/c73b2e6a-c8f8-4a44-b8d7-d1d97acbdab2.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 0x56385103b5cfbf3199b2af2efe026d60b8306dfa255252771309c88e731e683a. 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/UST8K1831117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7ff6d815fc88d2df8c502066740b95620a1da3500194042e4c9860d16005f4. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZFYZ1915548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fdb832640f343ba1d465f9fb95c7c0523a206ccea522d119d73d303c6f027c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:14:47Z), 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/QZFZ61926554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d80c468b4eecbd8b876be46d204c298d9fe7a921267175a5e7e6f78d69e0a4d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA82196900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18e9b8a80dff0c68b818c52c1f335e088145cb2bde1e58d9324bb7879b7c53e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:04:40Z), 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/QZHNC2163620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb94ae8736c05cfaeb5fbc7049c1e41d4d26761e592bc7ec2ec036a1a1939cc. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZK6G2145475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1366ff47f99f44e3da8c2b598baf7e567b04abd5b199eb17970095c0a6efd5d5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWZ2157594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36deee9aa451eebd86ebadcbc8933ebaeba2fcaff6142dbaf570c096f5d2dbba. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:26:59Z), 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/QZFYY2241519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd486e66df423466358144555068899294ae201035bf87302cb7a103b2d35fb64. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZFZ32282825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b58c326f4e92b77ad02bfc73cdce3e7b31b0cb80ebd4c7a4f53de811b0ff756. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:53:34Z), 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/QZDA42288946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a26385cb2580ec4dc2a9eed5cb0768f0a1832f39133c6fa276cb7b798d368be. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZDA42285848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06076d00980e555ab58af60041e62710cc6ec8575bcca52ccb5149df9134304. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZDA52221978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc39d6cb3459acbf0193bf2de0b15422a91626b7849ebba888c9b5d1a456f3aa. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6L2216570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b9b2a99f63333b11193900b961ef4a1d680620896f510944823e510112e08a. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T07:58:42Z), 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/QZMEN2284338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a025cc02f1ddafbace7b6274a8d81c27eae3e4ebc693b3fea5964f376118e91. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZMEN2284342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bff19b2118b59d6a5ef4d453807032c6e5cf9d95b9a1b191f498a4e6132fd23. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZMEN2284345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23355caff1e58ed5da8e3199d46a02a5ce0e716872e7988ff78398e3e68c9a3. 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/QZMEN2284348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08940c719107377850bcf3fdf525ccf91f78f454e49eedee4a14271dcd28f182. 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/QZNWS2224493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c229b4bb2b78d2347bab1fbd2be69b68550045ab34cf0694ffc9113e3d4270. 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/QZTB32236491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6416f674349caebb604e2a41764b1f41306f83a117252d6d66c77c381f63e959. 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/QZTB42297696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c5a9e633993744f1e80c6aeb7e9853bb7f98a072c347b8d76bcdd59d592ac6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTBA2299315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6696dda728ce7314d82c44db32f14b2ad3d0fe01ba4e10efba7b229c37468481. 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/QZFYZ2394483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91292f03e1219b94271decde989624b54ae4457bd4e64c90bd0c46e41c45f865. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:39:41Z), 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/QZK6M2319856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7912b527160ac23bd9840f5dbd538603e2dfe6b2d7ef54d9782fcfc16ea192. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZK6M2319858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57749510a66971bb67ec9b6a89a620b1ff41b389b63b192b2e3e27daf3fd1d95. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:30:46Z), 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/QZK6M2319859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481fd847ff0697eb53a582bfab8960c70a324059da91cc5819a281d3053f7691. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:24:19Z), 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/QZK6M2319860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f2876346a32fdaea50562755bf96b5ed9414f182ebeffeea61fe637667584c. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZK6M2319861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fd794d47947ad0f0177702ccf6520c8632bc48dc4e0a5cfdcb352ca4c2aeec. 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/QZK6M2319862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2855a1982775dd563cb48487392f47cbde012e55ea8d2311392533d6983c68fe. 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/QZK6M2319865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489fc47e917047bb912b992009469267703e0e796cdc2571ccd1adf4782b28fc. 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/QZK6M2319866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c06d57e7b49497b86862e3dc8c83960290573a6e6bd454a8ee3dfc0a2e8f15. 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/QZK6M2319867.