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 0x7d741f9136dd281a6522794b04d31e7980e70fc398f73b9baed0ee3f9fe19241. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3459eea3-33e8-4143-a6cc-c555b94830a2.json and https://artists.proofprofile.net/proofs/artist/3459eea3-33e8-4143-a6cc-c555b94830a2.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 0x406bf5d3f706e10c5f68c9b085a8112b3f01a15d379e6eb6436027f80829fc2f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBSMU6659599.
Cruisin' All The Time (Crusin' All The Time, Cruisin' All The Time)
A Horse Is A Corpse (Of Corpse, Of Corpse)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde356c407170d7fc76e23ce5ed3d2e476ec59e3e9b770738ed53e6bf43e1d78a. 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/QZFYX2586351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8212d9572d81e2343786c053d9d9807ba0501a1172c838d9ecf7a15fe3088f3. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZK6G2587124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8592ae90473d1922f5e7decbaf116f3a27957a60af54caf901a0e112509b5a. 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/QZMER2557994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8212d9572d81e2343786c053d9d9807ba0501a1172c838d9ecf7a15fe3088f3. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZK6G2587124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c853d9612d27b579905a6337d98c721d11000f2ae506ba08f8c96239a0803ac. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZMER2557993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8592ae90473d1922f5e7decbaf116f3a27957a60af54caf901a0e112509b5a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:08:19Z), 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/QZMER2557994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa653e75cc65baba3ff7481e4fcda583bb40871ca232e2d33c5414e96fcb08aa0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:19Z), 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/QZMER2557995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79893962795f2fcd780fa9ecfeb0410e6eada41c02ab2d68ac4e14f4f3cbfea. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:24Z), 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/QZMER2557996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbefa3c5abd3b8829567bb1361437f5cf5cabc91ebcad288f5192303291475c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMER2557997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1189ea20e0cca6882f0ab60e654ca2daec50c0909855eb6bffb97a579aabd41. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZMER2557998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a61a8d59383813adc11af005fe00d8ebb6420670a2395f122f015ae32656b5. 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/QZMER2557999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb17e0e87d1b86e232b84274bb54dac91d3f3555aa6457beff7b250473316963. 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/QZMER2558000.