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 0xfe955d015a93125753decefabc1e4f179fbf05d768ab289d7672497188be1fe7. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cf83ff5-730d-42fd-9aca-988fc277d1dc.json and https://artists.proofprofile.net/proofs/artist/7cf83ff5-730d-42fd-9aca-988fc277d1dc.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 0x1c46d2dd832da180bbaae2a35d7f3358c4ed667ecbf7993ba1c83260cc434ef3. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZTBC2472094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd16a54f362e76991ff953ed00c4a1ca12ac8144ad5fd387e5dc0a690490c1c. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZTBC2472086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42705be7ac6a493d3135c8235f4550391a3842d787408a23c66f659c0818b17. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZTBC2472090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b5c275efc677baf1dd654b025cd4ad926293ceec2c8538b3629d3fd3ba745a. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZTBC2467189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c34f516d473e87a84a05f1a4c389ce44ced1016681ded8247e2fc0811f4df17. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZTBD2402978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60348a6c7eabc82eac9675473b7d863fdf83715fd7bdc5f9c220f91e08e9246. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZTBE2409597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e95e04534e4208f909a5cee9107d9ae18c5b7d70093e0fa1e7fb3671615133c. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZTBE2409624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32112c2906f740330218ddd40fb84cd3ff450eee2172e24369afadc90f29bec1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:39:47Z), 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/QZTBE2408822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc4035dbf0dbff54ebb32f04a833ec5844f243e98d91bb7babde28db6edc38d. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZTBE2409617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdab098f5df199ac623b29242dd5916ce86bcaf02cad17336227a096dcb913a1. 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/QZTBE2408807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea97e3bca6a2145e914a6dffeb8ee86bbe4537a6c0a15fb7bcf19c6144123c98. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTBE2470299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6866bb2462d7e864fc08f1e7d8174327aed14b2cf3cad7e3f94fddc4f2f6cba3. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZTBE2409622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2857f8af3d1aeeeebf53da0275d9cd2b7fae0d064329a893aa23b4e3aac978c. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZTBE2408831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf78c10b55be633f9233c7039c36f0f2d1f80de72ccc4127e90abc52873555e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:43:04Z), 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/QZTBE2409620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb750d4c9db3ea51cba0c48d8d895727dbc7294b53d732783f873112b14fc4cce. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZTBE2409606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7922cf133c479c7102c8bdab55f7de2ce8c4c52cb2ca74a76b5f11d6f3a171. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTBE2408823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49dba6b07c675248bd56ec3dc812e333cfeb1a17d40757fd99272b1e4824126a. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZTBE2408829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5bf4e43911b5a4b139e1a975b24bd1be218574f156153970220dbb2fe319bb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:46:24Z), 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/QZTBE2408808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3074ae2203443ab6b7fa7eb53a2d1f568087a49693b1c469b65d5eb44e3b354. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTBE2408814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d76d21a18d247fd2083daacfc775ee10e7c722f15a816ed32e33f501d41ad30. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTBE2408835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e79c66e5579c2a9067bdccc444253ce3d256c0e6ba130cd36d3c4f3f70d6b9. 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/QZTBE2408813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11733a743a92abbea59a18daaa45ac5940419267a1c6a2bb30d8d61a3cbc694e. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:42:19Z), 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/QZTBE2407765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a7019fb1a287360b0ec8f5b10ccbfc20399d660e33f4a4f1f76c821f4f967a. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZTBE2408821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e25423580599f62cffdaf72a50cd00e8ebbe76a0f79e72900a14aaa2109499. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZTBE2408815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34389bbbff50e0f616b6591d32b0a818c3e09391732bc2e4ee21e9979a4e4525. 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/QZTBE2409615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f1ca6610c105c557af089e65b97a404c72afb31e0f28d66e5cf61c2f6766a9. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTBE2408850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f778236d092b9905415b04a9f5bbdd3d4c523f1d16cfda6d32144f74a8adc0. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:26Z), 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/QZTBE2408825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955ae22cdc476bd1c4e2fa8b7d15625a48c23a2f2525899eba0e4b2a25661731. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTBE2408804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef857aaaa8589b96a89b14a6aae133d6adceea78ee8c3dd472a5d96c3da36a20. 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/QZTBE2409610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22f6e5186f886e8439e640f81e76cf4e4356b9ae81fee4447c16ec7af985e41. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZTBE2408809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e45c2a3c0024dca7d9c5138a6cce984cfb79389ce80a0dfc22721929efcf33b. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTBE2408810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9b7a6effa8cebf788e5a4c9a2f7781dfe5696c91bd672502644cbe072122f2. 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/QZTBE2408803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a9bcf0f6c7782a782ad1d198a1c75d4865a8e42fe73882db9b24e46ddd215c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZTBE2409608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ecaf4434337683f7b7c45965cc86d33620a6964e3cd0d9c11a813648d0d5ba. 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/QZTBE2409609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee65a6a853fc18f8f3ee75d71711809cad413b0fc8abfde45c70fc273d122cbd. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:46:21Z), 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/QZTBE2473779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11dab7b26c92b77d05361b9f3a9e4e83724a2f5e9aa2bf9019e2dedcfea999e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:41:15Z), 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/QZTBE2408816.