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 0x1879804b571f30f822928ee76c20bada09a51d9d1d11e76fe79147f571b9492a. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec250c2e-01aa-4405-ae1b-5e75c6f1bc7c.json and https://artists.proofprofile.net/proofs/artist/ec250c2e-01aa-4405-ae1b-5e75c6f1bc7c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Shanghai Sisters 尚海姐妹 (2019 SACD Remastered)
The Shanghai Medley: 夜上海/爱神的箭/如果没有你/秋夜 (2019 SACD Remastered)
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 0x50cdc9d7f8038e383c2785faf2a6182ab7d665700ac431489be8ec5657cc23b0. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:11:06Z), 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/MYMM32430069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6277a84ffd6d0e6ec607ce3d5016b072abf432c9ab0fc1f00720e4dddf41ec9f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/MYMM32430070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662fdbf4815c18b258f4ecc1e5d881a77b929f2bb58bd85366b753eed66c3f34. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MYMM32430071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b4ab2b266ad8efe8b60a4e5c48a72fe630d633f463770764b39bffd6fb59e2. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:28:31Z), 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/MYMM32430072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f9ced5d5ea0735347e74c4d356f0bfe59cbc65626bedf4cb6a763305529b1f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/MYMM32430077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3a290ce810431be6311d8e120f0ee43e87f1ea3d76504622f7aaf2bbbc1cc2. 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/MYMM32430001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e84349615ba3f10d16fc8d51da47edb4ab4642f4648595e10f02ce6f4bebc3. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/MYMM32430002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a35a3524b0cc3c3c498fcf002c9aea5d9bcc5fdb44192adc05bfdd9add042ea. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MYMM32430003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53a3e27ac182355aa3b7480f067df4a8c1fccceaba317dd5e2e9b2ccb7e4740. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/MYMM32430004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a19b4b0198411385345a3c2bab44ae3e3a2f1a07671afbaf153177c32f338c. 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/MYMM32430005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007b013c7eb0469b1b3c99dd89f2101143537549762ee2e21f99e7c20d145674. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MYMM32430006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68940214d553645fc3b927f25a73768a2d9533548342c95edfbaffe64d39b4b1. 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/MYMM32430008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80a09ac122ce3bca0b6d4f9bdfcf42b265d6ea586ca05702536608777cecbf8. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:41:18Z), 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/MYMM32430012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843def6e33627b001df799e3e966087b6db95159602d00547f2dd77a0248fd29. 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/MYMM32530002.