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 0xaa42dfb9a340e36394f8628184c363b831beab8c80ba8f259bbc8c18ee8697ab. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3def93a-1ad2-4e43-b98a-ed97d9bd3058.json and https://artists.proofprofile.net/proofs/artist/b3def93a-1ad2-4e43-b98a-ed97d9bd3058.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 0xf1fda2601ba7434f7348572b0a23a15f2799e19d4346baabceebdc4d19609c37. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/AR3T21900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0e29edb60883955aebd31db9ebb3efb2a1a0a87cb02c7633edc1d58971a212. 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/AR3T21900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efc60a6027fd9652c804026095fb7e6ebb31961a498877424a64d0c1b03a707. 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/AR3T21900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff06b08d27df53953b7e637212a5b720e283a7c033431e668d47399beb9502c1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/AR3T21900013.
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 0xa28d2f51064cd3001bf0e53be0f56dcecae6c9ea0a82c4538f248cb44c3bd37d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/AR3T21900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ac2f446b7b943287d76b771b4302d9fa33fb1aab6936076b62e184b1f56145. 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/AR3T21900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5553aed8e8a6fbb681d8ca5488644fee3a092c05c637444c9caa3ea1ad30b237. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AR3T21900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b427026d30147805f550cd28f6e02697d516ec2344ad32ea195c86e2f91a9f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/AR3T21900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997cc0c1656d55e746b69e1228dfa242447b3b5fbee6d67358116d1ae33a5130. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/AR3T21900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddea39b496c0e130aa9e72140d9da221471575dbbe20ba1c4a84aa4c5e719e18. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/AR3T21900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a70ce5dc1eca757ab5ea1c425b57b084a80edc9b1999fb6fcca88778959816. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/AR3T21900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754af7fad6b347358ab6501168921c5790ef152246b3a05fdec13e2b568925ba. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/AR3T21900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb3aa8c66100d93a8f8684fddf94a4706583e0f618e411ef537a05df4de9fb3. 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/ARXTB1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd897dba83c16f229ad318a109973b041511a1e5b56d88c3994c5787c946d1592. 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/ARXTB1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8bc8400205344ace85f39261b6930bd6c4151448a6824378ade4545bba612a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ARXTB1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a72f848eace03870c82d6a2255292ba0cc1711efc6ae774cc99aec0a4e351c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ARXTB1400007.
Jaicu (Canción para Aguantar las Toscas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9934fd38413762258be59960efd09c6ae1bdaf20448abaaa8cd5bd7649925493. 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/ARXTB1400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e086e5a293894674ad062b2394ae4ba77e1076cf65737dabde251b954c616f8. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/ARXTB1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73660f955433d60cc4a07c683e7a57615ba1ad02b28fd88f2c33c1bb18c43d53. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ARXTB1400006.
De Cómo las Canciones Atraen a las Selvas y la Refutación Definitiva Sobre la Realidad Isotópicamente Asintótica Que Domina Sus Trayectorias.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b46c50fa4273dac1214cbaa5cc6c6ff976ff7b5b9a63c85e70beebeb26917de. 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/ARRUB2200003.