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 0x017f2e418e57417203a47a6261f66a92dd87839b47b6c9f36aba0d5bc97b334e. 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/478ab1a2-e040-4756-9228-494e25416cd6.json and https://artists.proofprofile.net/proofs/artist/478ab1a2-e040-4756-9228-494e25416cd6.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 0x2ed8a5f09bbbfa5edf251a40d5a1ae51df46e5845338bfb7ae21d1e68bd8478a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:15:55Z), 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/TCAEX2026994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21d2ce38552af86aff7278bed41bab62488f8591cdcb99b85043b961f48e569. 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/ES5702002164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebd010f2b1bf387c1b31a6f43165d93268bba4bad6af8b901a1ec91de678faf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USA2P2042939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f545aef24aa5fd2ab5ffc057f1230aefcef3eeae69c63f6d979af5c2d8a266. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QMDA62155686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67b4ab5c484a8c7f1734f90424fd13437263c3491b95cf1bae3f283bc65228a. 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/ES5022102095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c5b2cb6ba1800bd4e32dc9304b46adc85cab2a395380fdf88ccbeb850b35bc. 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/QM6MZ2265528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7539705677aff6811f5efe23e0478eecd3530c145a22ed67d32d3d565f6be2. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:44:37Z), 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/ES5702200801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0bef042eb014bca4f3d0aa62e49840937a43a0865f16f61ded16518efef8a2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES5702201152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6139fd32f00f4f85498669d08bd4a76071b65af0aef9115e4748fc270b699035. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:07:41Z), 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/ES5702201879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b03e8bd53979ee5e5b6cdb44a150b7971db3c5746269d80feb5fe51d79139a9. 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/ESUM72200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5085561df1111e6f0943098d345e7c232255ae7ea63235eeae99aac39dd896e2. 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/ESUM72300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cfc9bd2e23e2555c32be02c697e6b17af4a8af92abe2d62affaa42bade2941. 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/ESUM72301247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6139fd32f00f4f85498669d08bd4a76071b65af0aef9115e4748fc270b699035. 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/ES5702201879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cfc9bd2e23e2555c32be02c697e6b17af4a8af92abe2d62affaa42bade2941. 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/ESUM72301247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5085561df1111e6f0943098d345e7c232255ae7ea63235eeae99aac39dd896e2. 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/ESUM72300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79cff4b3e137dbcfb5a36ea9da162580c4ba5a1014468f03e49e6f57080fe9e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ESUM72401182.
De To' (feat. Almacor, Jheyzell & Richy West)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e16cb6a8dcb66ed745b4d12e4cee61374f464b2e429f32097feae8027436bdb. 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/QM6N22134998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efd683f5fa9586f67b446c18b83450aba2a53931227a7aabd1f2b08c171092b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:07:27Z), 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/USANG2174008.