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 0xd675ba5b0a4d75c24cc5270832ad8d8f8763bcbb54a671d4a4248b0b19cfdec6. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d214bea-4905-43d0-91ea-65faab9614a9.json and https://artists.proofprofile.net/proofs/artist/2d214bea-4905-43d0-91ea-65faab9614a9.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 0x7a4eb1636fc98775a66b7de3375f01e96325dde88753025dd2ce35dc14b56505. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/QZPLS2186874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506246af683f37cb6b4bf1f000404d74ad9dd41a9832fd82ae024736826c1510. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZPLS2186875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d08943c439b87be01f7adc936203e7cb799cd42be1a8eaab06e425d1c0af36. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:07:42Z), 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/QZPLS2186876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221dd8feda6b0b25ddad8f0438b51cecbccffae702d7c0508330e1f82fe0cace. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZPLS2186877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d02114101daa20b19d01533a74064b3986a13b00e4eec23740933b07ff18ae. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:23:29Z), 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/QZPLS2186879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5249f57ae7df08cc85623917171cb1abd3773d3528df79746c6aa1ac9020f39. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZPLS2186880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe321f561882d9464884a8b9d2cec396b7642f15c6bcfbc308e1d5a19d93d90. 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/QZPLS2186884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb942b8f605274e3879733af83bd26451c1a5debc4f3785bf81dab4ca871b7410. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZRP42106656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076b8f7045e8c4a21c7d913953de933c9f2b836783ebc07efb7d1691d8f87185. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZRP42106657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0eab20aa2a1fddcfe0ca9875f5141c37cc57790d97e44eb1aa4329eeff169a0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZRP42106658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5cea929a512c5b882392be1d4a94c90f0561c9d900abd7c95d352eb25233eb. 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/QZRP42106659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c9ec32828e6a87527bdd2567f399ddecf455a7a5843b1ec709b945e08f4c01. 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/QZRP42106660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdae66e00f452023dea71a215e85474dae11ff1c9d13335aa638d0ed909f6a0c. 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/QZRP42106661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f16d94f9374d938af77f51196856d3fd5c90fe42d283df68a010c3603753d77. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZRP42106665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0b63672866e7316079d009665edaac9ea11d59706f742df7caafe5bd556ece. 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/QZRP52127426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3cd6c1cfba2bb9991a05ea5a676262e4d202369703052454890ee15335c3c9. 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/QZRP52127433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfef11b160bfcc8a5a42d7920941aa551a1d54439df855abc589433b5206ece. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZRP52127438.