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 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 0xdeb56f72ee899491ff94e3864408a2e9032126519b202c34005c93c4668a8ca9. 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/6c14fffe-b0a8-4220-8c9b-436ec3663266.json and https://artists.proofprofile.net/proofs/artist/6c14fffe-b0a8-4220-8c9b-436ec3663266.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Gran Coleccion Del 60 Aniversario CBS - Los Hooligans
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 0xcaeccb6af607e6f028d8907c019c535e94be05f47eef95d11cf7b8f859c74205. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/MXF146400175.
La Pluma de Mi Tía (La Plume de Ma Tante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05c35790c064bb2303a59fe6191ce2afb52fd790db32b70c7ec08983a275587. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/MXF146100313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7543d402fe260396c7bdaeadaa027368f208c79cc4d568b278a376d9d05f81a9. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/MXF146100177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79be142a725c3bbd9634802108c645929fa122034cc2061648e9bd77523d81b6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/MXF146100262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6076583de1f0bc52026c4f9d8608028e3db40362e68acc66c9c7195ff9318dd1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MXF146100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeccb6af607e6f028d8907c019c535e94be05f47eef95d11cf7b8f859c74205. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/MXF146400175.
En Medio de una Isla (In The Middle of an Island)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe796d78cb84cbf72c8dae68c071edc1029aa11f7d911bbd3303e316b476e8302. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/MXF146100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79be142a725c3bbd9634802108c645929fa122034cc2061648e9bd77523d81b6. 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/MXF146100262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f331ba186e8987b076e553cdda3430058321f84f3992db71cead8a9bdd106d4. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/MXF146100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f9f1795a92be58ea2b7b96cd1a70b4a0bc33db9c0dbe8c9a91a9431af7ff83. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/FR6V81738979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f09b94a57aaf822325cb0623168e9a65615cf00ca16cffa8b0655419aed5c74. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/MXF148500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668aebd434e2e08778fd20a965214fa2655746849c41bdff7d2e1929156ee0fe. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MXF146100314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b08ff8279865fda7365238c7d8cc3269d8d27f7406ac5063e6590849cad563d. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/ES6602103271.
Hotel de los corazones rotos (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc15f6fbf2d99a2cdd02c4fb67843d358f4eb9c2880f51544e1be07996247c40. 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/MXUM72301892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f6b1fdea8cf3a72405e4ef12087ae895cbbcd3507ebf7749a02ebeeb4d27a3. 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/MXD941809341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98463f509bb6edaa322258b6edaefd69c4dd37ae8b8d06bf27159aa69adca18a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/MXD941809343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df6aed03469e64e8e96a59a4aeebd0447609708711be2a56267c6be057f54f4. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/MXD941809351.
Essential Classics, Vol. 848: los Hooligans
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4369e7b7d6e8d2b17548a18cf1f4d93ba582eaa4dfd460617712d85dffd2df07. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/ES31E2506911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a5e6dbfd98013a4775a6316bd87b68666db8ca279fe922e19c7c80ba26d724. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES31E2506914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da1760974adb655d0c55b04abb82605b097f126df2ccc56e6c6408b3ecbcc66. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/ES31E2506913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2f17eb7f7fa54d4a13ce0b46460542828d2d6266b6af5dbb6585f5cfbdc178. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES31E2506915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b3627c4955934aec2484cfecb395e6f69cf39f524f6ff3ac39ffcbfc0a07b5. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/ES31E2506917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ed07531fcfe44eeaf657c1ecb01bed39ffba601136619f81634335b5e6853f. 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/ES31E2506921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2c6979352fb9b3817170b345d1ba9557ab3d368dc4ef9a031c5733ab00de35. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ES31E2506923.
Agujetas de Color de Rosa (Pink Shoe Laces)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ead4c504ed16284c55dda8101289cea15fd0955e0d5ce40cab72416c755aba. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/MXF146100246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d2ecc8f96afc6cdfb6c84f35d403a8efd701e92a868775b4c8195f5d9f04f2. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QM7281966857.