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 0xfdabcc950a1922a7efdab806dadda3f52104910ccf9bc4db6c512af4c143efbe. 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/058190c7-9b89-4fce-bee3-8a303c589d7f.json and https://artists.proofprofile.net/proofs/artist/058190c7-9b89-4fce-bee3-8a303c589d7f.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 0x9fb42eb3d059a57a4c8b8ca1334a90ff1eeb3f5f3f896391037e898627e3486d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:58:10Z), 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/QZP7F2449136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0b3a78b539d8e3cb01aa1df46fa6fc65c521a3d3b645b8cb3ebf1380ba689d. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:36Z), 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/QZP7F2449137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6d7f03fa22d5667e553c3063caecbb398143bdb13f80bc6c81d5e15a169d7d. 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/QZP7F2449138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2cf0c05199f9bfb99f4006df79fe585dc2fdf745d223f11d23cadcb0097b05. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZP7F2449139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afaa4eed9fcacd687e676a5a4602e5ce735c5fc10a6b13ed8a9937aaef45149. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZP7F2449140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1ad0001cb190f53c84cdacc78e5fc75d49fc0cfbbb088285d9c76884c6da35. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:33:19Z), 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/QZP7F2449141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d54f066aeb0d75183c1db625de4a61444d1f5fb55491e958fa979ab1417a59. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZP7F2449142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128863f1377d3dc12d60b94f0b2edb65ccd51bb37de3016dff60f180bbcfb863. 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/QZP7F2449143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf72fe8dd136932af66b6aee9972144fe8bdc5db2b955df4cd722b7241c8df7. 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/QZP7F2449144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706e4873ae8842323c3c6cb4dcd0d3f61744e79552fe235bd0ca38d55d68ab40. 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/QZP7F2449145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afec5e97b2d159a5bca065c452fff12c6bed21b3d9ef5c0ccb81a0146cd2023. 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/QZP7F2449146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b30b305af286bc30176b053ed30d0e42ab3b05b4f25d518f30c51a9b03f18df. 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/QZP7F2449147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6704e30b13ac9f61644f68a2327d864fecc556cd25bda3ee5b8d328bd0b8f6ff. 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/QZP7F2449148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246ae545db21012b1c8313014c8f5eadf5e36a7b27911406438de84fbaadbe9c. 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/QZP7F2449149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3306b003b4a1ba29e9230c12de420f6f556cb03aa68ac4ae48cab6f3106ba83. 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/QZP7F2449150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa3ffb9981a73bc496d20f3e951de00bf9f94b8f7c36b497c9d2aa0f7685cfe. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZP7F2449151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f18ff682bda2c456bb33bb0820f2ce875b664323804670005b325e5d7da9a9a. 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/QZP7F2449152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508535f18977ac65cd24dc8086b7b6d7f1a69f11ef5bc0e55200a08fee616e1f. 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/QZP7F2449153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c70bf5bd95ab70cb8cd0a1a53d5822da7583fa7982447466bcc579fdbb30606. 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/QZP7F2449154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78457f1a4d887d7dc743a688b7d871d3bad31d8118450a7ab1557975ed23d9c3. 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/QZP7F2449155.