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 0x31e4edde763a710ceb4fb8e66d08772398d7a5a94cf660cc858b0c4421fc65b4. 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/7e567cc5-b12d-4aa5-b5e3-2b4c99575eab.json and https://artists.proofprofile.net/proofs/artist/7e567cc5-b12d-4aa5-b5e3-2b4c99575eab.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 0x1871d1b8eaf448387f6630fa6fa4f2cdabce685023e3df5f2302ebe14565d362. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SE5Q51826623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500b2bacac4825a99e0b98b198ccd5990e61c08382b8d28bb4ff1daa4a6d151e. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:49:52Z), 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/SE5Q51813664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623b4e77997834fa9f3836e12f9b46399cd7eac45b637d31715180ff0e14f940. 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/SE5Q51804834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093f153a0e65d85596bf7e44b2a7d9bf9e5c674b322d9d5987541551f535343c. 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/SE5Q51815072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71945369fc859d0dff61cb314167ef0c91e9c6adbde57f3351005ed2c4a4ac25. 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/SE5Q51821779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a27c79a54675e4e3c90e9911b98cb77acd748146dc44a4a6f328f79452b7c17. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:02:29Z), 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/SE5Q51822494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2c894fbbce8b652ed4704cf38a08f389a5e41d02360e830e3874c47be51653. 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/SE5Q51827958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545bc39c687cb4462ae043402b7b6dbc0ab4404a2000f171ee5e3df45205db80. 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/SE5Q51827852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa591f871df19284f562681764bb3da686b14702f9931cc8ff8e987c7fcce4b3f. 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/SE5Q51802937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593e664325610332c6fd529b751850d9252c69eac83466f026b2c786942bc8f9. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/SE5Q51804472.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae7ceb8cd32835cb8d3be1b24b2292c014b2d1d4d6e25a7e786cc25c8fa0ca6. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:01:17Z), 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/SE5Q51824009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab38dca2009f431bbfd3b05b23091bd4dfb7645e8ff2f06c5decadd724a0bc96. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SE5Q51828169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4bbce055f94ff58685bf7cbaec5a5c735ea196e593c441870d823f2f5b0159. 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/SE5Q51826722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5514724f1fc2d9d2711f68487986dd5d38275ec3bdef0b65dd93ba4f06dd8cf0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:25Z), 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/SE5Q51816198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf488aa5806490a359ea6f9fff299642b08855dd1b9d2223e0c72f1bb2dcfdaf7. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/SE5Q51813313.
Blazing Magnetic (SLCT Remix) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f008f1744301b727cb498d17fedd5e62fc8da6de1c344cc7a8ba2acb308f226. 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/SE5Q51828620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0db67efadf23d81f4602c91143ca1ccc7e5b6d2db9e74fbbf28df2c94dff46f. 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/SE5Q51828630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac38f800166dfb784586ed75670026e7d1009a9e8127102452e7f4514f3f2127. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/SE5Q51901765.
Over Now (SLCT Remix) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcce74c528de1fa63e1a9fcbe02b403a2cd0af1a2218eb8c086e926e96eeb74. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/SE5Q51901766.