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 0x4c5007054f80c22ca0df2ca811c22d32fba60b247e8c93bf71d50cdc75bb77e5. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09d020aa-e085-4342-a7b6-473e2fafa441.json and https://artists.proofprofile.net/proofs/artist/09d020aa-e085-4342-a7b6-473e2fafa441.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 0xf26cb05cefcf902966de4dfacf3395c17cf1423d363eda0b9debf61e2e41cd65. 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/DGA072223585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89abecda1eba2d68e3264c865ee8ff2264d47ed5b87cdc9f6eb44d560cb6e252. 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/DGA092226987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15466f825e9180d19eac68bdd01b43e3829abd638dda9aad84c75b57b62ad8b7. 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/QZ5AB2317620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a86ac456aa843261dbc7e32d7c74a58b18a8e30a3a0ea667f9ceb3618d59f10. 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/QZGLS2345487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14bddebbd2612b1593f36719351e9112d0c2da4dd5b1d1d6b76c442c4b14daa. 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/QZGLS2345483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89abecda1eba2d68e3264c865ee8ff2264d47ed5b87cdc9f6eb44d560cb6e252. 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/DGA092226987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1a54e87d9c743e0b3dc6aecf543b1aece7c028a65219d047051c436044aef8. 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/QZGLS2345486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe888aa5f4f88bd617244bf52050da1cb07e5e1c03e59d191548e507fc1ffa0cc. 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/QZGLS2345482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d35de54be81bcf0aabb07242854dd0b2c1f98298331b4cced71549cfbb15b29. 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/QZGLS2345485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4e3cff6bbe2434a7040084b84f0d7b040e165b0ca7e6066c8e2e27c7f17d21. 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/QZGLS2345489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcc56e948067adf7a6f59a513c5e6dd18425b6753d537748c0e6a51eb14e90f. 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/QZ5AB2317621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5098b7867eac18045531c4d6f480a0318ecfdde833cc1566a36482b2debc1a0d. 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/QZGLS2345490.
¿Seguirás Amándome en la Mañana? Interludio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de0a7cbeafcaae733ad773db97195d066e0f4afd508cdcda06d933edc6ef454. 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/QZGLS2345484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad7dd1f70128a6a1520e1d215a1802bd4850a1634fba6361c337738e946efe4. 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/QZGLS2345488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2201d2114edbeb8c77bb49192206f5adc847ce22a7397eb526dae4c19880a994. Chain 2 (Bitcoin): anchored in block 957034 (2026-07-07T11:52:37Z), 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/QZGLS2345491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d85c255533e5211404e68bc8a562a1dbfc8edd02b5ed00e3102d092eca1026. 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/MXD782202653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2378046f38e19e9438a02e87730e9e188188139e3f32281d8519b53fcac2f9af. 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/QZ5AB2329897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113cab1e4627fb4344b9c733fdcece34507353d05c3e8b0664b3827780198b6f. 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/FR96X2300563.