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 0x6467324c46e4421a2af61a04d8730b640f95b2a3a0bf68607d10c6a83f94a156. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcc47671-f1cf-4b2f-8d9c-0108c9b7f5ee.json and https://artists.proofprofile.net/proofs/artist/fcc47671-f1cf-4b2f-8d9c-0108c9b7f5ee.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 0x067a0e967df6253e221d363a5196787202e5c5ced89a6dc2a7e8c310df3c67e1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GXF9Q2568470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b273ed11fad0e768d2f1786a49aa384944c2b20e0586b1d352ec20f1b0d8cc. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GXF9Q2568471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa99aa8a24d084c164b92c176f0d63460213be39a07618e67163c018d94fd05. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GXF9Q2568472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ad4d4cf362fe778379e45d24ad27145bf5e310e79362c4ba801f981d9d73cb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GXF9Q2568473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9367bade9dfbff251551b428bb3f60007c6bb33edb6687adda9a0023e90f468. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GXF9Q2568474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63af392260a3eed287caf1a58a043f2fb2b59a5b807a18d2a9f5913117791058. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GXF9Q2568475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7f2369a238156fd55562088ed56d7c0e1cfb11353d74932deae53bdb805b70. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GXF9Q2568476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaceb646910df7d07141d448bfbb5050b63aab4539caabbb0f1a68e0f13a9cf. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:01:02Z), 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/GXF9Q2568477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabf941e6b52a8de20531f4f01fc9e72841111612582a155ca7fb5f2287719db. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GXF9Q2568478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5b0de77044f37cbb95840241c09f408d8fd0ee6e22d882600c8b642f22833c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GXF9Q2568479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e648c9dca663ae24edd71beea65e5a516f445a4fd7284a9f09bad374cc1512. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GXF9Q2568480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4483d5877955e22030a222b4990e75ab253e7069197d607a0bafe2f15622dadc. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GXF9Q2568481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c739f522e54cae0928747cf9e6ed56985e577f7f406ae6ff2241a57f4612423. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GXF9Q2568482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23d6bf6b691d29c9596401ad77be285cd181ec34f9a2bb929696ec1c2c6a5c6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GXF9Q2568483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09399f55de4a8c05b1d454df308f35857742d00f2440b1b89a72dadafd28aae6. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:35:42Z), 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/GXF9Q2568484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33509407818b26d8545bc2e485c90fad1b20ea9333a31b1cb58375812224309. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GXF9Q2577199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8dbce38e70eb04a8308ec85f8f02873cc1121f2fed03972b29dab66c3d19f2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:34:06Z), 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/GXF9Q2577200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cc2f6fa1d47c61a64235829b15b0ba0cacbfaa7936b9be62c8fed0d33b71e3. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GXF9Q2577201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9cd4fc5c4637c9f89083fb6f8e1215adc6b76014de9f5a13456427b7a93704. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:03:29Z), 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/GXF9Q2577202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a39f08075bf29fd6136059b1280214a2c3d38852e6119c023c1899954f92db. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GXF9Q2577203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3adb5c0c9b7681da657da70024778a72a56fa6f37abdd798f5696ca46cd5e3. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GXF9Q2577204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b0f5c7621469e095d22e9228b6aa7ad52c423778f5cd395b78e1e4cb41e1c9. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GXF9Q2577205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffe5384583aa64dbc9dff318f22a92d2f2f90ab3de7c31dae14ab6b3684edfa. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GXF9Q2577206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6febe9aa6936118cb44dc3c350e037b662e218717836453406853fc149f97971. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GXF9Q2577207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea66147cc86e85f1ad30cbe081e24b8096874da66ffa9eb1a53f168129983bab. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/GXF9Q2577208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f1ce107807ad5bf80e66d778daceee9ed8adb995d24647882164adc465fe32. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GXF9Q2577209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dbba866fed421b9f19594b797411a92968382244a14e1b19429c282bc9626b. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:38:47Z), 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/GXF9Q2577210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79297cb53fb31999fd8f80fcda96496ffb0a6d0638e21d55e33980b7531c2513. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GXF9Q2577211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fad9a2c814cfb73bb7b28606a8cbfd0a0be53ce8957e26987924737be4e298. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:23:07Z), 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/QZQAY2563908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1053594e1979d3ffc4866647eb5b686b20fe8d0968eb9a689ffb4fd138f0b5fc. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:11:14Z), 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/QZQAY2533974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a66f52323f69aaf7fe9b5e254f46b51e78746e42d0f5df5acef20dc0c6db623. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZQAY2500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11b892295fa181510c3617edafec33651a8b36643ad4a5666028aa2aebb6824. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T16:55:07Z), 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/QZQAY2512792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2def6a9d31c99604b1bc92b478a93b9e582d08c620171f6b2fb0fa24cf158f23. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZQAY2576227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fa0c013f1d25048efc2212d3d08d360057aa26f78c8846d3818d0888d81542. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZQAY2561335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4f3938ac994a79763c4166dae09227e8fa7ccb112b3db05a558a908eef2dde. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:07:45Z), 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/QZQAY2514366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4140319cceeb42ea358f5826ffcfc63744a97e3bd0074489aa0a9fe4ef10e0. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:02:12Z), 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/QZQAY2514438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4008e237fae8025fe94f3719a22f0b120bcf1189070a87261d9f5f12e26519ba. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZQAY2566669.