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 0x2098e7e3c904693e36da63c89f6d8314fd1f3d415f99aa626ecfc68758c55783. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ec9dee5-c304-43b1-8c0f-083dd9a9e25d.json and https://artists.proofprofile.net/proofs/artist/6ec9dee5-c304-43b1-8c0f-083dd9a9e25d.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 0x1eade49acdc307df8c4e4f3c6a507239c7e3206629affb2345dea54b54c9a857. 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/QZK6M1920303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc828dce8adf1bb9b241d688307c1b4f411f958daec9a2822c3a3e0326c387e06. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZK6M1920304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8894d957e73ba688472f4e327889e47c6843f6e142f889dbb6730b4a874ca659. 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/QZK6M1920305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e0100a600a0ff00a877490d37a600d1b0288878ea07439a1933dfdfb9f7a6e. 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/QZK6M1920306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a743b68b5033cbdcc1faa6f2475bd18046e18ecf0600d4684460953b22b6df8. 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/QZK6M1920307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6451d0bf316c7e0211d9f9aeb029296763c429b94357e2c76e6a10a0a2bb217e. 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/QZK6M1920308.
Infant Holy, Infant Lowly - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c7f474077f6ef915c7b6c35f2ee593cf662bff42fdfb57be03a753450a0ff5. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZK6M1920309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa69ee490f21c9c703e512e91fe2a63648fa3fc5d6a90b07f5dd85e3ff30131. 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/QZK6M1920310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0791ce820be964087b48a7457316bef41ca34aa77c2ba857348bee718052728f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6M1920311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b970cdf49738da071d742077211454c7b4b268a570776cffc94fb4c81cb8c1. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:02:33Z), 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/QZK6M1920312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4277a7250f7dc037302f7cb8e58116e812521d21ffd3583623f039e51ad1e1. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:04:09Z), 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/QZK6M1920314.