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 0xfe282132fdea19207ec44ca5163cf73b48d392cb4117932186866fec012fa807. 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/de60a6d6-2457-48da-9a91-1eb25e05910a.json and https://artists.proofprofile.net/proofs/artist/de60a6d6-2457-48da-9a91-1eb25e05910a.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 0x413e5c3ac1c0df6287e2d01550844929df7c96f3b208a1c9d0d6459ed01bdef7. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:47:37Z), 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/QM4DW1866730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5d81cd8ed0cfb70b568bf166487186c0ca2c579fa983428c48bcbcd9f0e78c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QM4DW1888157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5d81cd8ed0cfb70b568bf166487186c0ca2c579fa983428c48bcbcd9f0e78c. 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/QM4DW1888157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188f9bbae8468abe9d476b5a54a8ca9e29692e5978af2f8f032c65970534a636. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:38:40Z), 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/QM4DW1888201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4875f65679736f3c59ef7d5e9f094506f23f8a6a3090dacb484d03cdc082f061. 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/QZFYW1941261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ec95c0b6a1eb76f5029b976e022dbdd26339ab32ee22ddf1ebbb60f4886628. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZNWT2097149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ec95c0b6a1eb76f5029b976e022dbdd26339ab32ee22ddf1ebbb60f4886628. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:09:25Z), 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/QZNWT2097149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8ea4dafaffc3a05451a24b945bdd5fab46d4f4747f1c30024cdae070004607. 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/QZK6M2202750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8ea4dafaffc3a05451a24b945bdd5fab46d4f4747f1c30024cdae070004607. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZK6M2202750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a98b9d902d32698e326adbbefe1043375875d0fffb7ff457a53453a2201470. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:48:49Z), 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/QZK6M2202751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c1218d8dd01ced6552d91cccb79ee9eac4a5105c476bdbd13dac45e9d2507c. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZMEP2246295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a6e13201fde128734ef4b8ea05c71cd0a754acfd1bf2365992879ec615e026. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZMEP2246296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3d23d6bcb4822387e84755a5f01a570ee55ea079e615be16431937968ba355. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:26:46Z), 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/QZMEP2246297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73eb25c63e5418afec7d3f44944ebbf2b97d319fee086880d760ef708ef90d89. 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/QZFZ72380785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73eb25c63e5418afec7d3f44944ebbf2b97d319fee086880d760ef708ef90d89. 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/QZFZ72380785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd62c510770f3d60a31c97318396f72bc9767e2638e7c13cb4a68c440697b65f. 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/QZWFR2369124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd62c510770f3d60a31c97318396f72bc9767e2638e7c13cb4a68c440697b65f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZWFR2369124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d275d1f5f8da7dc355b67b055d6832aea94fe55087b77d47f254d3073dc148f. 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/AR6PM2400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d0b5d94328258e91b9a9bb8437d44e2fb93a43d4e4e8d5c9a966f5039e0cf5. 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/AR6PM2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b66f7043005aadec6720a8374b8d70d5dd90fcd018b292f1fd5f912da5911f. 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/AR6PM2400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e64c4aed2d95e6d3eecf658f18db99a2012c7723d955e32d0180951d7753525. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:42:36Z), 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/AR6PM2400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c1e0c3f205f4b8e79bb6d6101927a8758de68587d8ccfb6b083066066f278f. 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/AR6PM2400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a984a7ad70cfcd45e0637fc30debddecc730f318e74605480f2a124a60dcf3. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/AR6PM2400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fcbdc6c83278cae3d27e88b8441d5b1719f87552024b0930c59c300d364f9f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:52:40Z), 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/AR6PM2400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cadf7293c8d3e69c57c8e5465f07a89f4c70c0d3a5a10ec0f0dc506724b0c4. 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/AR6PM2400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5e9925ac7236e292a317f34da822f0a025abc34ba1f956bfe9f9cba13addf9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:25:21Z), 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/AR6PM2400183.