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 0xc12d9c9bfe8baef87b11b1c964b9413fb714bb5103ab6b832a1b8fd06a195785. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38683803-5b5f-4191-b1ff-2bbabf85812f.json and https://artists.proofprofile.net/proofs/artist/38683803-5b5f-4191-b1ff-2bbabf85812f.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 0x09fe18c04443d6154c38fc2957749ee6d5d94e78f643ac74615e89e78832b22f. 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/US4XG0503949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bed852e8faa42535253ca27e4abedfe760176f4a2720453d62c7b4a56e54c4a. 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/US4XG0503951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f05c9cb5782904553ca485c99d79da5cad370e3ec653b855cf7b623c45e0a42. 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/US4XG0503955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf65031331cf36404c473984a5c5fa374950e283adab998021181e8fadf3e1c1. 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/US4XG0503956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805a043918b30c8b7dd506a39fc333512bc322e288f4590b3fbeb712ad290daf. 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/US4XG0503959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca2c49df098a0499dd5dcab80e12408178d899da9d2fd123a901c440f0dbe85. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/US4XG0503953.
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 0x90d94fd08b4d7e3ffaa637e4f2e5dc38583b7075731edac7e323c69857e5a590. 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/US4XG0503954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85684aecea4c9559701d986abcd0a4ffe357cb8e4986787b1c055214e74f6ddd. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/US4XG0503960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefc55f0889bc5ef96837c5d261ff58b44d34aa878d8811a08433ba7dd66aea3. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/US4XG0503963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c308a2244b556dd2dc4062f07d5c0743719d40f02cbaf3d6c2ffdb455f899c1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US4XG0503967.
Encuentro En La Cima-Super Éxitos Norteños
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840f8d240794c542929398162e6b14611c4e7d12514f287ab2a589231961d7d3. 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/QM6DC2095954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec94e569352fd40877f26257374f61625287e99077ac03a52cef48a996a8ffc. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/QM6DC2095947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d7592bbc0bec87c2f594d9d08ba3dcd57642dd04ff7027ffaf4ad4143de68f. 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/QM6DC2095949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1ca1dcf101a218db09011879e88b9014e7e6d83a57eca0252cc1a746a2df85. 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/US4XG0408539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86a368a30899371bb16671119aa11d9c948479fc0bd591678c26e8950ab202f. 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/US4XG0408545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d7593ad87ba72b4df0b4e6cc4962ef95b603e786f74182371cbd506e7c72df. 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/US4XG0408549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a2bd4c488a3acf4dbfd66d917dd94d0d03b9864f50c6fa484f04b4287b80fd. 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/US4XG0408553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55aa85493fad669e66a59e8df9623d2879fd10f274a608a01470d772b2c1f409. 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/US4XG0204363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f36470dc19c58396c62f8e8a3b496efb5db3655a365346f1203bb642c4c8365. 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/US4XG0204367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e567cafd92cd4db2e44b407afa3b5a9004e04db4e9082d5beea192af51b0c22. 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/US4XG0204371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5735726a95d9da5b4a75fbe4bcc89b35f600590a062ec0f93c2a311f0f6196c3. 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/MX3192406749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4d396f2462c79cac200cf8bc55e5537f8a3581d0466876f63dd7a3ca6a01d3. 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/MX3192406759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5894ee5cc82828151e664f2a9cce1a2ff838331a4654c5c61dd6fa36acd2b17. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/MX3192406750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9c69be04a59678458f5fa25547e5f067c4b66533950ea5932889b98c927909. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/MX3192406752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3eafa5400161271cb86b4b26e0f0136851adbde868668421f5f8cf6199c1fa. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/MX3192406754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bff2e8e5952042ca0e3d743aceb34804e0aedcb415f02fae72729e7ad794d4f. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/MX3192406755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41c27a5860164223826748a233c0941be27010405658b30583fca0cabfef8a6. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/MX3192406756.