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 0x60f683ff3f216d41854f11597d1a312c083c84a1c7ed072e1d0d5dd402f17a10. 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/6e15b0e3-9fdd-4bc4-9c71-96b13c5a9515.json and https://artists.proofprofile.net/proofs/artist/6e15b0e3-9fdd-4bc4-9c71-96b13c5a9515.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 0xe1547465a576abfc90a5826fc260b5b1c668cc80fe7a5adc08e6ca6074558025. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/AUMEV2329483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a2038a722f200a34bea3cdec4cb81655abd0100141977a0f36a9ceda4838c3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:24:20Z), 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/AUMEV2329488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9f2ba9eac0c60878f00460858dd2822c5884369102904739d761ac0172437f. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/AUMEV2353754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740bbec607e93549262a8af30383ee9364321da9942a2f28a8c47c319f37803d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AUMEV2373343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2df905ba2f8093bbef7b49143aa6fc7bbc0de7843ffc5b601d28a17a727e9e2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUGBT2323122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8132cd98d0b03807ac9541a197b49fba92ec018c6e0f939d701bbac039307c0d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/AUGBT2323124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511db1b05340a8af45db48b1f3204f4aac594ab137e34e729366a0484e708fbb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:01:50Z), 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/AUGBT2323126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4808515698d2e0b63e62faa2e8cdabf5a9652f611a189733b6feb804c8e2766. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUGBT2323128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b23d5e86d2c40d53e5179ecc261367e8b6d827558a85cce0f431e11f6f0d62. 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/AUGBT2323129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87ced97f84119f831c23f6946d709cac5a97130a437305bada56bba487ef600. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AUGBT2323132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4245054b72703368ed3dd16302e468f89e7c141ded1afa4ea83f6005efbc87d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AUGBT2323133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2133ad49eefffdc68ad48128384fc7c6225afa428d1159cd256c5feb2b58c75. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/AUMEV2401255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9231ce35dababbf6675e37f79bbafac9b80f27a1680fcc5ea901a580187cb2a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUMEV2401258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa746567c3b14c87ed65cc4ddf668e58a0f6716e10be0fe5d39dacf2b4ce0f5b8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AUMEV2401262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d480c21b1010b17e27ad698246246e5b018382ba959149dc0a57bbd92c41d8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUMEV2401264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d93f44f0a636a8bbc1c88f719d79bf7dca955a9cc22e2419d1c680f8e2e0be. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUMEV2401265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47582a58db3dd6be150e49be33039e85388869d3666f2c15a274d20069c40278. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:31:52Z), 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/AUMEV2469137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f406c8e15460c0d407c49088ff2360aaecc649afb38b14ba85611be4b34170. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/AUGBT2482786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e374dbef72895f2030a62822bf7c86f139817755ad77cf232b58b7652712cb2. 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/AUGBT2482789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e17d9243e0ccba6507d94124a5b38a0612f83459739ca8edecd7dc553d0736d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/AUMEV2519700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9aa3bf199d5b3f9be7e257558e27bbd95da4b145e8ed3bba0b032662e36dfcb. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AUMEV2519702.