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 0xf05b0893066dc8b12eb83ea7efd8ae75db8e28c7d51a7351daa20953f734fee7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf70b0e4-38a0-4fbd-9bf0-36948ec31d21.json and https://artists.proofprofile.net/proofs/artist/bf70b0e4-38a0-4fbd-9bf0-36948ec31d21.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 0x6e9cead8cc3f5f3160bb93d9e36ea045d8ba9324c63029ab69d1631b3bcc67e0. 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/JPPO02401108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09350793fbca30de2721299348311c69bdfe807be8097f027a990aa9f1524e74. 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/JPPO02402451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fb2dce7515e6bc60ab63746a863ce05809a306ab7aed24c24d806fb7302ea6. 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/JPPO02402452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7814589e9b421805770acf6c1762d998853d8d00a8aae9070ac775c6369d1d. 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/JPPO02402453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60303343dedf5e05cf574fdb91ba8efdda2c0c93def106c1a8efa3f8538c3a41. 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/JPPO02401107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4888d8d149b5e4cf67bb85d8ce9d8bb37f8ddff395c9147a9d802c7a3230326. 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/JPPO02402454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257ce45bcd2845a54f8f08bc6e6cff800945b1b5e38329fcc3a09cc2c8aa5141. 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/JPPO02304550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09350793fbca30de2721299348311c69bdfe807be8097f027a990aa9f1524e74. 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/JPPO02402451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9cead8cc3f5f3160bb93d9e36ea045d8ba9324c63029ab69d1631b3bcc67e0. 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/JPPO02401108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60303343dedf5e05cf574fdb91ba8efdda2c0c93def106c1a8efa3f8538c3a41. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPPO02401107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257ce45bcd2845a54f8f08bc6e6cff800945b1b5e38329fcc3a09cc2c8aa5141. 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/JPPO02304550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d633bc8352aa0affe8581ddefe66d157e8edc580de4815161e62e69ffaa27d4. 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/JPPO02300507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ccdbf01bfa338b3d52460a991437859b0ea8d8d313a8f74ab29584a7751965. 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/JPPO02303047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb66f3610ddfdb54dee050a05d735548b50844b62b1a9ef18bd9bb330b23f2bc. 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/JPPO02303048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe262f945a2c4ce903f6a35a6ca6f0e9768e28003509182a76ed9f72b6698b0f4. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/JPPO02302965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf96a78381cb4827be666957e8914cfa36fe3a199741a6b91c2db21131e134b9. 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/JPPO02303049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21407dfd15b7f3d021033010f5182959002883cb6ad5fe4dbd4d16fbedfe8880. 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/JPPO02300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe262f945a2c4ce903f6a35a6ca6f0e9768e28003509182a76ed9f72b6698b0f4. 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/JPPO02302965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d633bc8352aa0affe8581ddefe66d157e8edc580de4815161e62e69ffaa27d4. 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/JPPO02300507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21407dfd15b7f3d021033010f5182959002883cb6ad5fe4dbd4d16fbedfe8880. 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/JPPO02300506.
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 0xb5f850d32ce01ffdabfe880e3e952bf8eef45b0fb0edcc0a6db2070dfcadde0c. 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/JPR502145949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003550db668a939eb0c3ec94cc2bfe43d466575bb7a26ae1d1c5acd306542ff9. 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/JPR502145951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9dc51509c9f71e7198cc495ddb718497ed9b2907bd731454f2928ae9ddc271. 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/JPR502145952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af220bb9c0d9f514dd813d80f0e76d4a71b10bd0239a20c0bedc5a420357ff4. 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/JPR502145953.