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 0xd96bc01f629285e61cc642b2061aa41f1bf225535c407f8e7bba5b11eb5983e2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e55ab312-f4c7-44b4-b8b3-1bc712d6d93d.json and https://artists.proofprofile.net/proofs/artist/e55ab312-f4c7-44b4-b8b3-1bc712d6d93d.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 0x1ba8e53510c51227f607e32374dce7442d94f6339dbe903a676d315411208bb2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NZAM01701272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ba2042f43a4a6e459e5ea07ebeb1d2f67f303fc0c3c2abcb36900b74444328. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NZAM01600623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ba307d53df6c27d8a4478d923b092595e898b50bbba6fe1766e30cf4298529. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NZPB12400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91983af6e8370c3c358e7e90a242729b3d33826f5f58ad427ed6cdf22a01f78. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NZPB12303405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92017a6ff274d05a5b713dd9e77d3c24829d97dbff5eaeb0fd01abd65baaf66. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NZPB12300487.
Red, White & Brass (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c63c99af26d7b7ddc030b43982486fb88eb459e69fe0c4647db6d7e71e5794. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NZPB12203814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947964b8189db28679e0ed121b1bc8f807330ad29b2519bab5219e6bf2aa7993. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NZAM02200790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947964b8189db28679e0ed121b1bc8f807330ad29b2519bab5219e6bf2aa7993. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NZAM02200790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63ffb587778e27c3c4e48b1aa67f648ea02edff76b6f700f1f0dd60bebe376a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NZAM01700923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfa16d11d3031e10da6f921c641b5064303e14fcd7c79f2818aee656463a3e2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NZLP01600129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336e7467a9271fbe0cbb43967fd324939787226f155fd02166c7779859f06124. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NZIL01400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68327f6dc04a54c835cccf401d762fbf5b9ff852e946d793ca6e24cac7ec79a4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NZIL01400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64f117b7d35338a888f2d4e4731493174f4debd3d05d92a822cc2a66cf47e40. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NZDR01300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a11ec44d457fde93ad093715b8aaffe2b698a4c6a2ba669c9d10817f70f077. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NZDR01300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51895467b1c92f3a576c651e8b14626218d0104b3fcb4706fbc7a128c9619529. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NZDR01300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b28f463ad26eba15ff2cada349149eb43a3d110bdcd624d53bc6555cc1a7de. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NZDR01300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf256a4fa00eb1195a00347eaf383e4389c742931bad1c2e4d29d13a9dd8b81da. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NZDR01300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6c3a251fbbb569dfa5eb70fe203a6e324dde0508d41fc6c90539b934a447ec. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NZDR01300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cf9d56f063c960a135bdd3f6ec3595e6d6e372b81b1a07feb24054f1c50a8f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM21236402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc540aca03a75b30d40784b3aa7b9d22f2860fe3466f599b5741ab3f79bd7f2d8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NZAP00700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c39ea68ada412b52e73c7a9dd261dfd90a8d371cdc648c5b7b79f2fa5def8b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NZAP00700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263a7bd2fc2e57788892f24cf8215e283c64a003eab55b8e5751faf6746e4743. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NZAP00700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5223e237f6fbb4ca731d1e5c2e00eee090bcbeb546cb762b7fa9174227624fed. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NZAP00700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905d523de4d3bec79bdc16228f52bb814927e3ff3fabff0448f9efbb82ab895f. 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/NZAP00700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25d042e8fec7cb928b91659669f7274e0c4e4b7096551445fdafd20f9b5a5f6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NZAP00700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78b69de9323b75867350d3090f78c8fad2a547584d0f1e490c6ebfaa54c78ed. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NZAP00700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61934792a4dad4e288a05b9b46fa093e9333bcaab8542acb89cf5fc9ca730547. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NZAP00700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c0a670d10696826df60a39adb2570f7f4cfccba0268c46357cd5b8a92c0870. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NZAP00700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d0226c24b7ba7ca74c723bb2dfd3cb6a7618366ce3a4588f887205d6a80ba0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NZPB12501693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a6acc51f4f6f2ae9f1caea1d2aeee1c5baedf8d820dd0543e4389783a614a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NZPB12403750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb6d4c0a9b2e504b982435ea264449dfe3f4de3b6353ddb016959cf002833fe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NZPB12401411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ac68512714ac744e5be11f69e08f0ffe447c24e4d3d525ed1fff593ba671b8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NZRI12300444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8604af2a20f3e57c9bbc978dfc26aaa8a15bfa7f86f8c1275ac5759f6257602f. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/NZRI12300445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf824887b40580d3fa1283419f4beb6a1eb1511d030b48c0ced151705f0077880. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NZRI12300446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cda09fb7e0397ab0cb836af81346688073781c0faf25f40759e706b6f16ae87. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NZRI12300447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1be9fbbe1b3da1d3e3fe62e90135a18ababbe9576481477250434b205239d6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NZSG01900027.