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 0x7a2a7045310eeb39d4e1f4dafb7f90131f2fbae3a4a452f1c245d17ce454e798. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60fe8874-db17-4265-9751-bf5a9d2fc08a.json and https://artists.proofprofile.net/proofs/artist/60fe8874-db17-4265-9751-bf5a9d2fc08a.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 0xa90b722347140b340df4a159cae923adada97d3af608a4997073ade356bcf1a7. 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/EGA252209935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba042595e4b9475dbb33040baa1431993c6818d454a77ef494b74f70e78cc28. 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/EGA252209930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ff83f3a7cc41e025f4280ad5b88500c844a342d24621d67dec1f1ce7bfbcee. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/EGA252211079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd0a23e4faf0801861d43b0e42108aabed0bd559bb5c0f0dee79f6b96eed180. 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/EGA252211087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59c0aef8caf30d6c254eef184a26ca0d1e968e057059a2cdc180da8dff152ec. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:46:36Z), 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/EGA252211089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5d28909bcaca075963ea06c8adf09b4b4959cd87c92e4158d1ae11268258fd. 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/EGA252211074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7775ce0974e8aa05abd819e8f2d2094ed99223407eae83eca1415e128e6d17e8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/EGA252211382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a80b64d58ee149fc92d2318f8d4ff9194883b5963aad9e1515dfe8953fc228. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/EGA252300501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a712f1c5351892b4cf767d33aad7f090f687da795831b79d81be476cc82a64. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/EGA252303698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26aed354c7b3b414d48b074446f782373ae0844599e64866e0139e91e3d04cd9. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:29:40Z), 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/EGA252402191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1811340c4dde335ca4fea1166e5b3ec5fa8d352dab1b01786eea54fb0b1289bd. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/EGA252501401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b071f26fc02235c530199aeb0b8ea54dc078c3b8c92992fba1ce86a65fdc2dd. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/EGA252502437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4545755a083b16c6453bb6756aa75d351f3433929624497fea7feacc27b5fa5. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:05:16Z), 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/EGA252506154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063fc1df4f1c3b347ecaa5fa7eedb9638218bc3d8fd109682faaebc2b8cc07c7. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/EGA252510877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d2936fe58ae8732084ff407c92cb09c7c92842ecc1a7c8aa4cdfcb73a0d0ff. 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/EGA252513634.