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 0x9da90141307078a54b6d05de6dea4aff412068b41031769a721b2d5f39b6350b. 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/82bc0286-7ac3-46d5-8092-eb775548f88a.json and https://artists.proofprofile.net/proofs/artist/82bc0286-7ac3-46d5-8092-eb775548f88a.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 0x7727c331c9d985f6344773ca5b0ec900a9c5f5802644687e106f067494588057. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXG6R2400488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84312694aa5f5e27f6434db72f21c50483e0f1d8238189991fd3d7584f2ce04e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXG6R2400485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab176273a1d9a5b3e8630caccd346843d56b1e9f2f47efbf5979e61f7b62cb2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXG6R2400438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ba63b674f3cc88371bc8a635e1beb91b7fd34868ef212c6e3c5f08a04fffef. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXG6R2401089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e0f656a1e797841fb8cac640a76c2b5441d9032e99235c6db581f47281479b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXG6R2400328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84312694aa5f5e27f6434db72f21c50483e0f1d8238189991fd3d7584f2ce04e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BXG6R2400485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe30c39757b0b7a68cf46965a8106017e9b8f7d9ba164e0e7847427b7275220. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXG6R2400486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7727c331c9d985f6344773ca5b0ec900a9c5f5802644687e106f067494588057. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXG6R2400488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05169ba79f9da5a6ed8db91c5b0aeb3b9afc6210c44c8e1182838fbe8969776. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXG6R2400437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc756ca51c6673b413fa626024d2c5a453d151b83a20bad23c300046dbde8ccc7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXG6R2400490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c2d500e3ded589db4c89c0ac4397a976d454111123e44db52d95faac637d1f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXG6R2400491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab176273a1d9a5b3e8630caccd346843d56b1e9f2f47efbf5979e61f7b62cb2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXG6R2400438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9947823fe9a27e04e62631621f9b83f0cc7e89c91ad6b344841a723057742777. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXG6R2400492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e011e169c33f6b1a9b3d47776cbe052e94d20c5f3f0b0f870e7150e2b2604b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXG6R2401222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9b28c977dcea4b90d0c26d4d93e3687b74f7adcc7e33f1339d31dc37ff9082. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXG6R2401227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96325866ed971f6f3ccd713895f748acd5315ccf693d0faa3e14abb9b6145f92. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXG6R2400857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc067dad71dbb8c5fb2fb6a9b24426e66e1f6cfc7a4e50dabd4d2ebcb25dec4e6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXG6R2400859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e13ef732bff98e54d39db5c169b03b07592f0914c865c0842b41d7b284bf2f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXG6R2400870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a2d410228bff6187bbdf8067c405f2fd123fe3d3f1611e22fbe1b2e6d5397a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4442400263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe30c39757b0b7a68cf46965a8106017e9b8f7d9ba164e0e7847427b7275220. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXG6R2400486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9947823fe9a27e04e62631621f9b83f0cc7e89c91ad6b344841a723057742777. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXG6R2400492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05169ba79f9da5a6ed8db91c5b0aeb3b9afc6210c44c8e1182838fbe8969776. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXG6R2400437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4f3e4410508d2ec491678246f9d212c5fe11694bb085ddc0c4cdef3fb984bd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BX7P32200188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe394eca714ca633520be8989566ec0a9f0996a9d8bd55f4681f828cc2defc888. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BX7P32200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ba63b674f3cc88371bc8a635e1beb91b7fd34868ef212c6e3c5f08a04fffef. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXG6R2401089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1071cc59ab54a99e93436d4c09dfeb4586e2c69584c75b23fd1f3ef7e81989a7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXG6R2400951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6a0c58be0bd3ab4d249ce56f03108e19d9d7de135cae500ebfa6e1d85e4482. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXG6R2101096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72fb091ecda693809029a308b6767b31b937f7a83407734d99f3b680cc0c2ff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXG6R2400955.