1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x5d1ebb42b65f89156cbf06ed5ae55918662a4aaeeb4e95ce141639c73f4807d6. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f81a5f0-cd58-4a87-a9fc-56e5f7e3f056.json and https://artists.proofprofile.net/proofs/artist/7f81a5f0-cd58-4a87-a9fc-56e5f7e3f056.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 → block OTSBitcoinBlock must exist at that height 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 0x6628f978b82854824a4dfc9df16a4abdfb3a0b3402697a7947cb7b6eabc4cd59. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5060919518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72d6bc8ce3664a0577044acb52770b605756dad074b5ce96173963e0cb043cb. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:52:14Z), 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/ES5061202003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f69fb224a47088db02c08c0397d915230dba7dae2494e46212877f1b932a5bf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES78G1340001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe881d0bed42778be8d7ca223951b6f6c404bb13d2776c71e86ba9f293b990304. 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/ES78G1340002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18d47ea0943d1a78653313f2908a0882fc487adbbf38debefeedfb6527316e5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES78G1340004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c94a1b3ec43c81733d86fc7070d26f90809982ac77d90fa8449e874e2cc6e09. 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/ES78G1340005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4375090d3d51e8eb41cb445da94e4f13ce4e93a9179b451a3d12cdf22f08dbda. 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/ES78G1340006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5132992ea66ca68d3634b602a95d5f1394f3c466d6ab43abdc0122de0634069a. 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/ES78G1340008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9847f6073fa208a4c884d501b408a41ed30fe61f99707cca6154e858fb1ee978. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES78G1340014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee78914a8c6ffe34f88cfda859db0017f5809666ee062601b543b3c2537cc790. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ES78G1440004.
Junts (La cançó de l'estiu de TV3 i Catalunya Ràdio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b3b368527712f05d4d4f42caecefc5d0459c4c6c0449a382b12bac3bf0d74d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES78G1540001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f40da57185b7985db987c6120f4c5e4c75daada336fb7dbf3759c03bb49e0b6. 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/ES5951605452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6022ef4ddf2c7da53c5fc90639f4ce3b38a888ebefd827c25c8cfd90c72f92. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES5951605453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf912edd345d9ae2281429c89903fd0b72e2226e51a0a556b769c373adc756e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES5951605456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1213d8b9a7b0d1c1d32d6fe620fb0c4ee53ac23578f71f3ba58ad15b81074d2. 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/ES5951605457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f9d0a4f3567f1dabbda3723cb0765ddd62ae61d1f5cdbeb1e178110ce22c62. 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/ES5951605460.
Junts (Cançó Estiu TV3 I Catalunya Ràdio 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d94df3cab26fcc9f38e7d9b4b160a48fc882ed75a174cacb6d69b53159ad750. 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/ES5951605464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bdd80d1e56d352fc8d7e29ea10e20264e37586eb7ae07a21a0946e1f33e45f. 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/ES5061605408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7992e08bbca5fa29b406126ff2bf1482e7ddb9623a04052a91722d06282f85. 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/ES5060906202.