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 0x2dab199d938ef6ff033bdad6d680481fcfd70ef6039e9182fdacfbcebcdc9982. 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/b4f11c4d-90f0-4386-bea5-69fc7d500147.json and https://artists.proofprofile.net/proofs/artist/b4f11c4d-90f0-4386-bea5-69fc7d500147.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 0xd9eefb3fe74ca181aec1115deb1cf4e6b3e9e631d616bf0263ae4578abf78339. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:48:55Z), 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/QZNWT2258433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3557dbc5a74c214fd305dc43b45568974290e4e682e2bfb751f38a686144b672. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZDA52365031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41e52b260ffdc840f9bc0c166ec228df0635f327b947a0666449c60517a381c. 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/QZK6H2315546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7431a60e6e35db0bce0bf547fa2b5e687c281365d807677cbd3b37f659953175. 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/QZTB22344082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9428610c663112cff2a50de7559bf24c8653debd06577af6eadc081da8cc4c2d. 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/QZTBF2334842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd037b9a6d3197c978bceee4bddc8aa8b17e300fb49974067309340e8e460a20. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:03:36Z), 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/QZHNC2462908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65c607775d3e3dcb427322f2ca9861a7d99d9c9cd2c7808a3239bc313fe7bd8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:19:30Z), 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/QZHNC2462910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d6fd09bcf3de3031b1ddfce7d5365d82d7e11a6454712b834ec30b552fdbcc. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:40:22Z), 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/QZHNC2462912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a0dd1bd815414ea6cd418ef569dc25c1984a61a9d9d20789245edd690db724. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWQ2467614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed7d24cd1da2454039584aa7fde704db146934686a1b1e3ff70ba2a16356d8c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTAT2403394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e31a14b7a88e64a646a90f5532902c22f0626a91ec467038fa9a0387d6fe0e. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:55:24Z), 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/QZTB32421099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c38af0f589dc1682664ac9eefbb6b6ebb3f587ae86c3bf0fcb6bad2af84e3ef. 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/QZTB52423259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed7d24cd1da2454039584aa7fde704db146934686a1b1e3ff70ba2a16356d8c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZTAT2403394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e546e10e2ededf7f284b81d07273d167f4cb666c4af8a6cbadc62a003e123b5. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZTB52423258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c38af0f589dc1682664ac9eefbb6b6ebb3f587ae86c3bf0fcb6bad2af84e3ef. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:25:49Z), 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/QZTB52423259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e31a14b7a88e64a646a90f5532902c22f0626a91ec467038fa9a0387d6fe0e. 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/QZTB32421099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e67077459897512173b8d1ab6877fea3e57fcbfc22f4ca0d11b49e1daad9a65. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:48:00Z), 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/QZWFV2457904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9be8f942d4b07e617157966370ae16fb04075169950a9fb11bf76907b245ab. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZES72547211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba25dd18406f57104cb085a1998d33f03ec6725587af42dc56bc56e8bc6f47f1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:42:37Z), 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/QZHN72572237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c649e61126d18519f8f3de5ad2cb247f6bec77c2e632c7a29fdc7a6d74c49c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:06Z), 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/QZMEP2511372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c8bde1cd8e16595f18eed0a50c8b6a29b2aaac90990383cf647790303bc35f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:56:36Z), 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/QZK6M2509901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0466758f5dce8aec7ed969e3a3061850a32e1db9766b20f5314a7363ac2bc2bf. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:14Z), 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/QZMEP2511374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cd1076792fb610a2d19b3cbd6286e333909ccecdf1b15b6e7e95af60b8e503. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMEP2511375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3c7bba9eb71b75aaa5d52545aa04c6791a1ead032bf1e8727758d786bd2bcf. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ7T2521663.