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 0x58bd0e64848d64562b85c9e179f6dc7f1c188a460d79fda8b4c6d32a74c17893. 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/2e44d8b2-8626-4d6e-8343-e4af5566cb12.json and https://artists.proofprofile.net/proofs/artist/2e44d8b2-8626-4d6e-8343-e4af5566cb12.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 0x8a9c9a6381e77afd6d217adae9dbf7e83cb7906179858dd1c1f5886056ecb92c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCADL1807341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759a54f9b3f970561e0fbb9701849f032630da0a05f0664180f667caa967f2ef. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/UKXN22334874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759a54f9b3f970561e0fbb9701849f032630da0a05f0664180f667caa967f2ef. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/UKXN22334874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b57925e19e1ad2dd56a48a9636c691fb0f02f9a8c75af06b776a961ee4a4a6. 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/USA2P0505202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96de54022a8779ceaa8691dd6f99167140d96f285525a0bdf16df21ef334ca2d. 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/QZNWQ2060393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4db8b5ead1aa644dab9b792dac52b36b545a37baedc172ae70d6c2c91a50a0. 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/IELOI2182263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28f3cc8143a69adf9ed26c5f5bc3550670ff7425441af05de493f4203e55f07. 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/FRR642301047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacd55c49dbcfdfc9c843bc67500535bfcfb38ffa167b8223144b3658ee59ee3. 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/QZW9L2293368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe496824f40e9cfc13ebe3feef41eab27808060bb9862149090d692da1c075d1a. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:50:59Z), 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/QZZ972317597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacd55c49dbcfdfc9c843bc67500535bfcfb38ffa167b8223144b3658ee59ee3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZW9L2293368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96de54022a8779ceaa8691dd6f99167140d96f285525a0bdf16df21ef334ca2d. 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/QZNWQ2060393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759a54f9b3f970561e0fbb9701849f032630da0a05f0664180f667caa967f2ef. 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/UKXN22334874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4db8b5ead1aa644dab9b792dac52b36b545a37baedc172ae70d6c2c91a50a0. 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/IELOI2182263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc992596839e9cd4f8d5c4eea48f1841be080cee8623555e239f48368603de13. 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/GX4R52582500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53a6850833d93d8622d427a844ddde96796836b880cd621693f30f4cb18b41a. 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/QZTBB2550923.
A Good Man with a Broken Heart (Snowfall Edit)