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 0x0452dcbe197bef79ec45f4362746912002de83a96776b6115ba1a9159db661f0. 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/b6aff030-229e-47fa-85c4-f79c9d6b8863.json and https://artists.proofprofile.net/proofs/artist/b6aff030-229e-47fa-85c4-f79c9d6b8863.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 0x1318dc616656fa74b6e958853f61bbe6b5c79a7d3244f9d31a7a39463f935e47. 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/GX38U2424676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8968e291f2e7d6e9701faea51ce26ad61fc03039e1e5e060c45a9ea6d9ea29c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX38U2402211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae7c2ad09fc1594e503a324d0670375df2f2aa2645a5973310d77b1c9493d70. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:00:48Z), 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/GX38U2448894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e017df0f036bbd251f2e4720467ca35458d10226cbf4e16445e1bb7dec2bfc5. 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/GX8LE2401308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa162b91b4929c09a35efe31c58282596de48ad4ffffb61226376b04fc48b4a. 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/GX8LE2493178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a33665d12ce5f7ae40c861408f5a78a33ec4a6ae51cdcd417c2c409c402d1a. 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/GX8LD2479086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319277b1e564c272fd1fd9f927ab37edb6037fa042c7ed1636387a4c2684e9af. 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/GX8LD2463215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0ce1ea2589fc956f44cad55273b2ca4da59ddb46dd871e32ec8d8a02b9b217. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX8LD2469944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220106f1b653194bde33bf27c425782ac765d81052f84ba058b044d12c4f7d24. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GXBDT2399923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e523023da8e3b1640e6cba6543d5426f2999b1c7b17187e20c9e6168a40a28. 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/GX5MY2360823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56a56cfd7d9776909b12db17c4eaef3a1c0e610ff698124cf31b74a1fd92ff3. 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/GX4R52306803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ea057a08311aa2ce71e6ffaf0050a02e4e95e206b0cdbc43b87bfc7bde9c49. 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/GX3HH2353227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92399c3bd22cf1f9c23e9133f104a0ba39d3cc79064416a6f31d58bdd84f03c6. 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/GX8LE2321827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bf73c3eea71b1e562331f16ec41048437a2a797547b3f18fd89fb7d559d3c8. 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/GX89G2345311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6728747f34564781c486a8cbbfabe20e3017dc3f5ffb060d99f60394df527b4d. 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/GX89G2310669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63260210f31221611a2fe02d4a61f8b2cf885a5b75a2a93ae965938a320c77f0. 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/GX8KD2280609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff168421f7bbe17e5919a5ec9ba138faa723f1277a76ef01d5eedb70e17f9cb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX5MY2244613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb61b96989415cae57b32d24c6fa0a3569de203284ec14d2d05732e88065832. 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/GX5MX2284346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09aaa434d788e1b99d365cf4d84cb3f8ecf2a31b5095768b154bfe12df14de83. 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/GX5MX2206980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa445ae9ae7fddc55e79272342a7ce04d78c51ed4d03f0d37d18ef0f5d4bbec28. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX5MX2252368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882299129cea22dd38e6bde471f61e71f8192aca2bbfcb7373126932c445b28a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GX4R52263553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb16913fdc9f445f6020c02e414bc52629f82e632777aebd0c43ac2af0a2921. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GX4R52225432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aeb954e4429bd34db555e9ce4bde0bc66eb22c7362ea2aa3718f3889f8c12b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GX3HH2292008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8681c8f004e9a8935eb9f2da44108f88752c0d3c18d2c60a3bcdec8c7e5d7bc6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX3HH2244663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea06817c05219181514c212802fd57bd2e167250302ac8063e86f7fd5d7584c1. 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/GX3HH2217324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc9de6b0a79279b3b6dae561b93d0b66ebaea2dd3b3d1d7688d7fc6455fa7a4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX38U2278151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b48fae413a9b94ccdffc041b2068a16628f29fb10b5b52f1d81591c5abc9447. 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/GX38U2222678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e5389e49ba8a2be1b03bfd269fdf0b639a7896b0bfe76df84d3339f294173e. 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/GX38U2244208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14016341c6c1a304b09b4b4fcdbe4d95e33ecf2df3e1cb2504560ca5565040a2. 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/GX5MY2178244.