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 0xea51c44b14c451b995ae179df757fe6866de0a59eae5c28cb806ff50cffb6c02. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19479cbd-6794-42f0-bc94-88f85954f485.json and https://artists.proofprofile.net/proofs/artist/19479cbd-6794-42f0-bc94-88f85954f485.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 0x88164a4e178fe18606f059735e4ffe5956f1dfed253a0b4b168eeb5f201b32d6. 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/AUCAY1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5069d1ebadbe0f5896627cad9fbd45cb8ed27be721089ff8a8e590d784510d33. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZK6Q2012585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329f4b4d8d7f668f2e55dad115eafed3392959aeff6100692eb48f475f729962. 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/QZFZ72140241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75789fa3b182ee44cdbf4499e988180208faff164501efd863554159f38d811a. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZNWZ2104727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bafbeb226ff683d5db92529c12e17e8e65f560377ddf4583380d33295f8372. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES52215706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8063a2c5730ec8f41e529a937a5cdebf2a408337bd7cd90fe8df6546f03375f. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZDA62340371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a279f5ff0a1c6389b5cb9c3c278ff5a46c0a72b7c2362b90d10525b880600b4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AUMEV2585927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a279f5ff0a1c6389b5cb9c3c278ff5a46c0a72b7c2362b90d10525b880600b4. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:57:41Z), 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/AUMEV2585927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc79ca934ed8f20122fcf512e9dab6b63ff0d2b90c18590a52d88d410e657e8. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:06:13Z), 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/AUGBT2504032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b10e6c1b1e0b8a87d42db7a508e38f7dab632b4eb26d58316108a0536c9938. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/AUGBT2504801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944ef6243df3e6d98d39d2e67b72f49ae21a448fc453bbb662684b2ca95fa0ce. 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/AUGBT2504803.