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 0x70da0b921933e098ea7eeff1589315c4f2ce2ed0f6cba9ad08b0c5b315da1a06. 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/70865220-a9b2-44db-aeb9-bbd998a68f5f.json and https://artists.proofprofile.net/proofs/artist/70865220-a9b2-44db-aeb9-bbd998a68f5f.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 0x8247cd604290206c13012a307c90f836b952dee7ae45a8ddf2cad6110bdf212f. 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/QZES52439672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954532763b8b1674c678e41a191b5fbc86ad97e219d9c9239522fd2eb5babab5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN92452961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c9ee8f2030e44dbe5688b349faf7213580745feaece4052e5b1ad16989fc8e. 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/QZHN92452962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166e65e32e4fc4f791aea2a3c881f0f2f9babcd2499c6b10f3e9a6c2f197f128. 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/QZK6N2435818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42be5ae87efa464f98014d2ef027788fba5b5368cacd00985d2493f62a82b11. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:34Z), 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/QZNWS2458684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945f2036119f14cff7ce4bc27eeba88f6811576da8b73084b7b57dcae0882795. 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/QZNWX2406322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c6d746229e7d71e79fa312c4d9c19dfc1eec837641e1e78c9f87b3324524f2. 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/QZNWX2406323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b83d30c643f9bb2ee18147a9fb554ee9f51cf53dad9c8d6070f06a2ba14e132. 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/QZNWX2406325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cceea8c084f0c5aa2f963586d7e9fcb2263c9a7cd258d083c9c6792e1a62826. 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/GXBAV2242827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560ebdaa229ac2db57bddf9c17f4261c329dbbfd8cbaee08365cdd2b86390338. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/QZTAX2404550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc43f0997ac716a6baadbdff2407ca5579865b12b00415b9ca068a586c385954. 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/QZZ7L2404840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4322d3f6ce54b04a961d93848a8352982a4394b851ac8ce5626db03684e58c2. 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/QZZ7L2404842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7751882dc54f7a52a08d75c693e403cbbed5a53b018d9c65356dd31cd881cf03. 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/QZFZ22551431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc903792fbab2b3c4f313fae489bda80e6d984783cbb85b84e5cbaad6e0d7ca98. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZDA42597963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebee59e686f53328022c891a2c6700211e518c3bca2b6f9fbd76d9eef368c45. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZDA42597964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34faf262b4364321efead89363b3aad977911b1204dc245e0c048b24f5ca25f4. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/QZHN72500953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b669b3b16b6dbdc50520bf2bbe4101b8cf7feed3984508c5cdc98b69220cfd0. 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/QZHN72500954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c50c786b882ea2395edd8d41ee3b471b7b6398255b505285a33b146536bbb4. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:51:31Z), 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/QZHN72500956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3081e0dee6618beaca51cc9462dc3292783fd02373e312ef1d28f7982953adb. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZHN92582087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06958a79b865921321a03155d932fa7658d6ca98f5f647f9ab848681c38b6bd. 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/QZK6P2532258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d42df705e55e5ee6d53cc168ec9c8e473da223c84a53985a7a0a65763d428c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:08Z), 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/CA5KR2523902.