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 0x66c34c6d02c05a09ede977ded52321429612d57a994695c3a2c2aaf6d8b71f06. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6cfe0d90-5129-4b84-a7fb-ec8c1cb7e781.json and https://artists.proofprofile.net/proofs/artist/6cfe0d90-5129-4b84-a7fb-ec8c1cb7e781.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 0x77e8f7a9ecd5031a7f15bda24856ee9d3f035d336b36514c278555aa2ae126b4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHNC2526359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c32326e0822d2a7e8c0821a42f27c3ea6f4ccad469a7338f17e45e7c03394b. 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/QZZ7V2414945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe605e7a34a278d08a4682ba6f5caa7edca303b61d7082c202f383d165589dbd3. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZWFL2405758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c2a92d5ebb80171c4819094fb3468f519ddc338d5f1161bcbaddf6685c8ebc. 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/QZTB82415071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109589ec699c90bc79d8d29e1744ccb26899b6b6cac6980c6908f96e8a1c42e1. 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/QZZ7V2412230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc98b1fefc5a05c461b5c54c4497be0a4f5a4f5b3a9b7afef7fd0d27654a9778. 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/QZTB82416244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0c996cf30e422dbfc3011d4b4f8d47e544e5b01dc9625721279a66d3b0ae79. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZTB82416220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a54d8519a564437c24444d87dec423e7b3ba91cc627d45483fb72f24796b42c. 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/QZTB82416228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e139d5dfd6517d062a255a704aa9597e2c18a490fa300753dd285e8f1338aa. 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/QZTB82416245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a0cbad949ea67b518551d682ab38b22d65177a6109a889d71e5081c8c545d4. 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/QZTB82415073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4066092bd2b3bb6d03560a2af1f4b8c691200562e5acc1eb89ca9f3f6d30b6. 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/QZTB82411632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3a681f2768b42470c4e2266e46b9957d470549ef3ebd8643078ad31b556283. 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/QZTB82416247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4266e836302979dae312d6a5ef0e9afaa64e9e81e02c7b79dd1d9931dcdae7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:11:45Z), 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/QZTB82413625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54166042990e610f1e71a06feedc1ebc8f1ee8d843d26910511dbd35c83209a6. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZTBB2452381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19907b665332ade765c1430b849034b1a19d9bddd1d986d9238d052eadc6e9aa. 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/QZTB82415062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805dc1c9b1d2abae998cd551d6009b9ef3861003c9f50ea134abb01cf73956d8. 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/QZTB82413635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb99469c338399e575221809f10a92579874fcd530c2c9feff939f407f4b1846. 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/QZTB82413646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866deb77b3412ec493684a4b7a69594ce4d1425d48f11fc28047972c4a3d40fe. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:07:05Z), 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/QZTB82416256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0412a137cade2a07e1227ab1e7ac9ab3fa22823d041fa88c33b2698df5abee. 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/QZTB82413637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5407cca82f92ebbf9c841c2504a42f12f8034aeadc526860455d4b91b7383c1c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZRP52486241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caebf539d55bff0dd190d3eb48617dcc57dc6add1a18b119794287de78a0358. 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/QZTB82416232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fbc8cf2f30ec0ae798457fa0213913a3a73c3ddc0435abc3f0fac857c14687. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZMEQ2581083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c7d198c66c2bd271f8893d12f347947a1aad8f18f0ef1281259a0a31b8c8e6. 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/QZRP42474684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd136c1871198db4ec6d5d2e7356beb2daaaba584d3dac2577eb07aa7519bbb63. 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/QZZ7X2402573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa609c118ebef8d211483b2e1d99039957b9fdc202bcdc6f5a5d3f4d8dc28696e. 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/QZHN82502402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92a288d223cf726cb7193e6d57bf5561b26c00bf3afbf8d13c87ae2bc56f545. 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/QZHN92583189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20150a812a6f14efedfab8b0778daf0e7b0b7080607f36891a966180871c1952. 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/QZHNC2523919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b40bafb3b605c04b588eed52008ac5f53b91a45a38416fafda2043501d58ef8. 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/QZK6G2562267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa248da4a8cd6facf8f1236290c1da2c238f79f05e520c933c86e362c3be7a104. 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/QZK6F2523394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a37f49ca338ffb3e24d1042b0f216dc44c5624736e795cefb71e2a0834a9d2. 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/QZMEM2508283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1a9cbfadde2834bb52cff752af293bad7a669582af0094d0fd58ba1ac301f7. 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/QZMEQ2582936.