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 0xd0954bd50aa43d3e2b37cf34533b0fe6f591a2264fce8d358bcda7311e361444. 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/b24ff04a-e18c-4ca9-a8d9-3ea8799eeac1.json and https://artists.proofprofile.net/proofs/artist/b24ff04a-e18c-4ca9-a8d9-3ea8799eeac1.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 0x5f742a2e5e19f21e4bd2c887e266979c6389c09b69ba2767cc3e81e2d74a044b. 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/JPY252100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0237459b77f444b3228371c2e34db736672c409859693a5e551642295f0cf75. 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/JPY252100113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d469b9d897e0e19f9c47e89139d8ee36cffe38ebaf8ce71cc49b950f5e83df1. 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/JPY252100114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc349a0bc80df6931b2deff055c89075bcc335e2f97c08dc7f8b4cb3c599625e1. 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/JPY252100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fd90bc9c1741c3a18870f6d9af72d766449f263bcca0825403008e9580c431. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPY252100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0343b8bf8d30315f33122df1ad05db1626850cbe3515becd3fa86d951bbca6b. 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/JPY252100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fb633fdaa6adabd5134ac385c96d9f9414f9ba84be05fb149d815cd890a4d3. 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/JPY252100118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81305ac1a91aef20dbe100996af981a724973c4e748bc6c1304c109d31023103. 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/JPY252100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60aa6e995811935570a74bc8dd13b0c899e5324af9c8f4c61503a4e58886386a. 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/JPY252100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e73ecbc114f8430d28ccf844ef69fc0bed06de20837c4afc11332fcb8061b5. 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/JPY252100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eb0a2260ef6f77e22657dc52109d58185302b8ce879801af736db9a41fa429. 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/JPY252100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe3f59dea740e44c4897a23168b282242f979358938e293fff04629b54d0619. 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/JPY252100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3ea4c2289df7acac560d6a60a7c8a17d66824bd9c08413de65770ed3dd62f9. 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/JPY252100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8acbdf30160a50f43796be57f33362502e9734a14f9dac84aeefd3c40e15786. 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/JPY252100125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126ae8865a4c4adc5fdfc22ad41e2eb20430aa38a7afa1b29825c9e0990bf75d. 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/JPY252100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d5805c0b1d3e549b2f681a1e09d20f55fbb9020ae8fcae365dc9d2830ace66. 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/JPY252100127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6838851474a7c1819ad2f031e5ca6659aa45ad555ff88406df4e39a40035889. 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/JPPO02401030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6836180f42066c686f9934c17081c7f26b1e2c772875f4d5f398ccef97312d9f. 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/JPPO02303082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07c40c83bb0b3b8387cb4daa347dc859db4cbb224514319b08061d7646532fc. 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/JPPO02304362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6041e914e1206def6995e4c382267346125404b4d31f90ca6be97861d84e715. 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/JPPO02400181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e616e393e7661d40e75a6db8d04ded25a472deb5e90cfb08f6e98f6bac0893. 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/JPPO02400182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f34036a6ccf62bc490e13257ed29ff26d8d475e0ee44f94fcd68a5ff8f98cc. 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/JPPO02400183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901d96af493184232398c71fa1418266e205d42689624ad15f80c0c5eb86f3f8. 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/JPPO02400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6041e914e1206def6995e4c382267346125404b4d31f90ca6be97861d84e715. 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/JPPO02400181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07c40c83bb0b3b8387cb4daa347dc859db4cbb224514319b08061d7646532fc. 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/JPPO02304362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6836180f42066c686f9934c17081c7f26b1e2c772875f4d5f398ccef97312d9f. 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/JPPO02303082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c58edae765e3cccb197aa85fa729aa9ded9bc9ecf99b34f739e5f1ce31e7cd8. 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/JPR502145945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891714e72ca76d11fe609399b91c4e2a933445e84a343cd7926f1c893b8a2998. 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/JPR502145947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e8e7929f9c45bf4956b6cc47e139de2ec9cdb7800cf6f89d82e17a433e5f65. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:42:30Z), 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/JPPO02402485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7633e13c08f2584bcf2e26b5bf3daa43503bcacbe873614a538fbaee8e677a65. 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/JPPO02400766.