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 0x826a9a3582ffbd2408736fcf13cb5b97f3c0a1a030ec00285988a86e6cbc113a. Chain 2 (Bitcoin): anchored in block 953794 (2026-06-15T13:43:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1dea2b4-7005-4c75-8a35-3c206e9254d2.json and https://artists.proofprofile.net/proofs/artist/e1dea2b4-7005-4c75-8a35-3c206e9254d2.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 0x6028c24d725a92304640b83e0602957f41270b0cd13536b0e61db4b02fccfd50. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:27:08Z), 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/DEZN82530276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae629967e0ec7d7e475e90f8195aba1526fad279a686f3557c966291c2ece376. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:07:54Z), 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/DEZN82530113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54883d0a3ebe031de6baba11350ddeb44a4a894788f8e55bc8fe52dd26ab5431. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEZN82530275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945acbd8ea8ddce1ec8a06819fdcfdd83bbe11480ae42234de51171480d0ef32. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:33:53Z), 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/DEZN82530346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ea1a5fe74bca5e3f5a45d4c316f4456c3283afedfc101a94f0607e4906aa78. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DEZN82530255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d2da7df54349db9e5ea6d2ecc02cd1ed94bf30c55134196839403ac782d8ac. 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/DEZN82530249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac29dada4631dccdabce48b82b26b1a1497fb85bcf429fcb312701de84870fd. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DEZN82530121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981ec86a2cf3431587eca6bede0d81c1d05ecdc3a5a4c24bd86e50c622a47525. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZN82530308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d767896c02451324f2d4ebf06e67907d6e68edf98397919270e4d3c0904679a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZN82530066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70a918ae2220ea4be30b2e84bccb9bd15e0d698121789c06f8ee42ca92aba60. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:59:05Z), 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/DEZN82530080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d10fa731e4c768a1d0b46b04a824a8200f838efffe48a8cab2cfd054f3dc29. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEZN82530245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51dc4e87b09faefcfdbd0c3d44ae3caf164d9c3e921d4212b43c79a9cc99675. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:38:37Z), 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/DEZN82530114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6deb6f90df0428fd2a6285236b3cad7a6eea8bd7af4a842f7ccb4cfb10c5d4. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:07:22Z), 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/DEZN82530215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f3317de483ad45562ef6164e7d116f973ae1257c880683df4c16462f9d0f62. 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/DEZN82530293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2507ebd3fd85889aa3522acde9adc9e52149b0f366ff9a26084080bc274234. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEZN82530214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe0b75f4e829ee30d3d685412b13384c91c8ac890c3bde14309f43b4c8f5e7e. 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/DEZN82530533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28dc1b505f373265cc4ece9aa77e587e2cbb073dd50046a53e2a274c11fd580. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:49:32Z), 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/DEZN82530381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e30957ac9af946216093adecff6ed09ff2ac218d9b590bf821050a8f6f0fcb. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/DEZN82530224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd067fc7b2e9b19f0d2ff158eb70735c83eb857ff2e856028dbfb05c91eda7c73. 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/DEZN82530151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8354881c95645a3fa28ae95fbe563f14a7211dec7562094145ab6d6e9e59c8be. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEZN82530429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcc45ae5cee3a8ace37e2477aa8db4fd0487d86f12698ffe94bc7c160e852c7. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEZN82530497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5c29e2d9123834a6fca1f33e999a8a501d43d379dcbc827f175a7ce9762f46. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEZN82530366.