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 0x5446d4300a00ff148e66fa5b4abbbecb21966be2b730a377146697ce5170176b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de15357a-5850-438d-b95d-0ff59ad2444c.json and https://artists.proofprofile.net/proofs/artist/de15357a-5850-438d-b95d-0ff59ad2444c.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 0xd423caee91d4b99acab9af7053842af9f749691891fc1607449ccc1c717366de. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:02:04Z), 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/SE66N2357486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8430108796229aac0d0ec74fe378735e792fb8f1586dc92bb760dd99e8750edc. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:43:40Z), 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/SE66N2351189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc938830f1c08e461526d72328d5f0661423c833ad09a1965a7aa5fde7e782b2e. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/SE62M2388723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42edccc30a2142d2222288c64c06ebfd755df2e7ffa26a091c517bb0126293a7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:01:10Z), 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/SE62M2332216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90da9fe79926f20fea04c01dcf70816667d7b8b204002f2b198fcd3b529990a0. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/SE66N2397871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e53dc5dabdec1762616fadcb1124c4c812f3b7bac4511f65f6c55a982cb8197. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/SE62M2316863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4343d8d745322cf560fea9ad26ba7d3b505dead60fd75c72e5057b25419b397d. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/SE62M2372394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bab1431c496dca5152ce62f236160c860334a05b5cf51dcf3387d30ad34433. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/SE62M2346197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2b7572b2a6e6d7744dc27d8e30626a95d1fe65f0868f6ab1b2b02e346225d7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/SE62M2340120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbda4b591dd1c00936a93f1722f54139f9657e4f41fa3e05950735fe683376a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:49:37Z), 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/SE66N2379657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7c64cf37627e2274876db668cbdac375f2b4cd3511ebe12d048f58f5dd586b. 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/GX8LE2593303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20212271d1581d5e91643418239a4bb1e955d2af3aee042c9914bae27bd89790. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX8LE2553051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7035da7200674a130e2eac17c291b4ad5614440ff801be02c8275257a7d2e9d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/GX8LE2558985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a1a881cb440ef4235c63d201de6ba6147aa291b65ffe7114c4ff148aa06c15. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX8LE2534116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe907454eb9ca2748b0d3085a809e3d08b5f080a1a8bb17e46b47437bb34683ed. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GX8LE2534980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1544e803fe4b8d4a42e8de3b8cd06767c3e4846c6bbbd32b4567438fe78a899e. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GX8LE2585595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37978c082e44f53f1760afe8decf5dcf270cfe1409a8e35a8a6aaab413b20b88. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GX8LE2516980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f9078ad1db4b6bee9e1d14cc99f5ac6ffda4f4741771c824404409f90d30c8. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX8LE2566701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9ab2181db7c9e88aa61cad7a35ef012d3425333a28861fde64a4a4fdae0b25. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GX8LE2558421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8e97e20101e2fc4a4a89da4c8aab9bca005aee9fb0a7362b89bd931f0ddc72. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX8LE2566028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9a9b81de5d38e3c951dc0565333330034b31c0fed11be2c3ba5006bf7fceb5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX8LE2536379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b102e2c161ca225b4615996a29bb982aac9c21c552cbcd5c5620fb34884989a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX8LE2507324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc811477580267874444c8d6dde05bef03d1213df9c1cc7da2727f0e20da3c3b2. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GX8LE2540783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d40ff7549e135abef2b67a2c1de4f20965e5c52b5811ea5c4501d8e1307ed1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GX8LE2513686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9339e308e53209559a1aade2241b2bc01d1bc1ec5d4d7fcf3fcf2da122e3a25b. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GX8LE2552828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e63128840a1443388d3cc8ff13acc1e2802488057af2e2b044822fcb60fe1b. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/GXF972543942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a70dff952e67ce404950f7c23436bac0560dbfdd7b4ba86efb863a27622d27. 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/GXF972513118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc833702cdae7e38fff931ca22a41b21af7dda6c7932407f575b9027209981d7. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:31:22Z), 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/GXF972585803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abdc84517c3a2206634e64e9731396b5903e1d4a978a9fd56daa720864d00cf. 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/GXF972504084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc65ca58bb6531fcbf4e6de0226778c567f1d34e7bbd29ad46cba9200affc5d. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GXF972516577.