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 0xb6e6799452f076cbda88c52ace2d0e785fe5e5b5080b05be3cca143d1daf9f44. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3d9e11a-35cb-462e-8969-4e90c4a4dd73.json and https://artists.proofprofile.net/proofs/artist/f3d9e11a-35cb-462e-8969-4e90c4a4dd73.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 0x95d5c2d6d2beb9023dc93ddebcbfc8049cf00839cdecb3e1ab220f2c76fc9082. 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/AEA2L2148393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3d4fb80fb5c9b7bbfc8e6c5f18802d762e80bd9abded67b5b9e74e185c3cc1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:41Z), 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/AEA2L2152395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4308a7592b6be7d25f27cd00679462ef25b09cf69f60a5d57b0673e7776dae00. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:52:32Z), 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/AEA2L2152396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddce80bfa74ae0a6d8dbc571f93cf8be83e6bf760d8863054dc207d6b9201d1c. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T09:58:02Z), 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/AEA2L2152397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66589c19ebb1cf2bcecd5d1a2d9454c7ac7c8e7dc9adc36346dc30d3f6dd042a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/AEA2L2152398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebd49a3bf309fc44d154847e16607fa2c5f14b31b979e10bd0a11f386212c60. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:01:36Z), 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/AEA2L2152399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241b45741356a63b0a5e5a1630639986b4f2aef3021b302f3dcb13927535f33b. 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/AEA2L2152400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a3ff72dd726c7aa7f08774981fea981db68c4acefd4480782d0f98ad2fed93. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AEA2L2155938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91369aeb05cdff81db32b7fd07b2cc7cc0cc19bdc9cec0314133a8b488d3d5ac. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:47:39Z), 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/AEA2L2155939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cdbe49e0b7577b0bb73f2e4eec2e2d9ae8b6794850d0dbc603df04517b5681. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AEA2L2155940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5015477a4e21d1856aee657e8d8d5eeaff57274f6f674b457b8f3ca6e3174887. 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/AEA2L2155941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac33ac1e809afb16f88812e081ec78e834122c0cc38aac3193019fa6408630cc. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/AEA2L2155942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd749f396f8088692008b9a809cf6ab53599d92670a2b30b96ee55c11467867c1. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:42:21Z), 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/AEA2L2155943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6a0ddeb0a4bc8a7aeb6a4d8f53f73080613b495d0226f4941cb4c9c5e02840. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:25:27Z), 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/AEA2L2155944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa8a7231c245098f92142b8ce1c036d91c76b75312331312e705a501375a701. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/AEA2L2155945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cd27dc0c282c79c9dcdb385bbb1c057e6d35b41999cff2b75ce568e08932e0. 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/AEA2L2155946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2674ec2666cee46b66421e4594763d81f79ad1dbbe3b992965a3bf8f8bc5448d. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:11:13Z), 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/AEA2L2155947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2973408707b58255da209844554632d96e328a8860ed8be4153ec65fe214f9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:41:21Z), 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/AEA2L2155948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0174118ffd91a9be973c2f6d84f72bb4083502b370392754fb7545d857b875d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:46:54Z), 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/AEA2L2155949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40244bb203001103d243fcaf0d66092f6af0092fc6d70ea308e5bbc54ddfa8bd. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:02:01Z), 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/AEA2L2164373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced8babd7b7e576ae3337299c175d31bec4c35b685db11bcd63832500641fcd6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:26:51Z), 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/AEA2L2164374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a4e63b4d09ec9f595d8b415f381f589b85900a89d6df7684f5645a39a15a04. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:41:24Z), 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/AEA2L2164379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e596a29eff9a7fa9a84822679af18e9c1b39fb09fe8a8dc72671037c45c7de. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:19:43Z), 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/AEA2L2164380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0928a520a78f7afd44bde174733f84c9e6932de81e288259c8204ee057f958. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/AEA2L2164384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b8ef07a40904b6b3f2a19f9e76b29d0dedf35119989c407a1094e9d26af292. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AEA2L2164388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765cb419491012ea24f70612b7c71fb0d9341f49ef9b1ebaa26e6bec74397d12. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:25:01Z), 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/AEA2L2164390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb5b26129a390694946dcea7199e55f1b3349eb11723549b68b72c57c62d128. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:20:35Z), 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/AEA2L2164392.