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 0x2c1dd00a8d72246f17c2e6b6955e09dc728007519a247d4c929233a954484253. 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/c0d69d65-c68e-45d6-9e46-6f5600975780.json and https://artists.proofprofile.net/proofs/artist/c0d69d65-c68e-45d6-9e46-6f5600975780.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 0xb0e606086ef7dc85291734d85fd29b4b79b15e913a077960ab6aed6a48af8f6f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZFZ21965003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1647fc153ad28f1d15e65effde836e5bc54ceb9a736b6d71e25be43483dfb80. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/EGA072100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3334571728e342befb969581bdd279877054f7c5d604421a1aada20cd4547c8. 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/EGA072100268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9f96989f17da1aedaeb26ed40ff2ec12c1df183f3a2e18c0a35f706df8ff12. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/EGA072100344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa117030b93eae33fadbd5417593c79eb8b9b0ac053fb70739f841719724cf6b5. 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/EGA072100544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba4543f2fbf7aeefe575311f7468f9c26056fa278ce923f976d1a3cea73a76a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:41:53Z), 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/EGA072200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82919ba07bf73544d1483355aa450d5ca55ba7351d60d54a79fd0cf4a45c691. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:50:27Z), 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/EGA072200821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74140c23574c128e7d1f94a11c4adb442bfb16e768050803488a382707b18f66. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/EGWKS2340101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145ab2fe617951442f59dc844133b30fbac7bc2d17454b0853dcfff54e8fc897. 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/EGWKS2342401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f72960441ffcb55a48a73a1c19783bab415df57727a4f1b2edaf3ab34cff968. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/EGWKS2420801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a83aee0b31b03da28ba56eeb81831d6eb06589b6e1134decb606717099fd9c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/EGWKS2469471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca59872ac8c0fc43f6fc5dc8b4b686f663145d2a7aeff850bc373e1369e4aa5. 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/EGWKS2585490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c359548841ab2ffd31f559ee4d15c3894fd65f8be812132b303ef27e06d892. 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/EGWKS2539448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f7256ee93d6337d524442b2e404c8c21a36de2eeb47c0e0c59e03b0801ba92. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:28:49Z), 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/EGWKS2565536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce3d0bee5b1e9c1f4dad89fbf7754f5cde2d5ec70b84dc5659e92c2e93e69ed. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/EGWKS2567050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9344789f6e942a243bd87f9b93c21863ce01d69b29d3fc2a0ae2f8b65f63d1. 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/EGWKS2553922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa404cfd9d9deb3f8a0ad0c2aa6d22dec7e4cf29e32271445a46ad98ce23c17fd. 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/EGWKS2514371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478c8327a16f5f2c98bafb6578882ef8198be6740f4103bab244fb9cc8b4830c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/EGWKS2596327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478c8327a16f5f2c98bafb6578882ef8198be6740f4103bab244fb9cc8b4830c. 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/EGWKS2596327.