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 0x5f86e32684e26e33a30c1d2ea8d11b1e87689fda1c14d9fa72a3e38617a61027. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cab6cb7-f130-4f9b-912d-654da8feaaae.json and https://artists.proofprofile.net/proofs/artist/7cab6cb7-f130-4f9b-912d-654da8feaaae.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 0x939fefefb78fbc6a88be6a6b7156041bbb72428b77b3e1c1d2f0f1a1fe8011b6. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:45:54Z), 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/QZES61979586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0287133496bf9dcbd8fea4aff76f4899033de5ec1f4205f5e708d7f42bf1b790. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZES61978284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe0f89d52a4a391a7b35bf370f4343cc5a9b52796ed33de7799aee80392e2b4. 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/QZES71949607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f7850aed178c4ce717f652738dc32db95178568ebd2bd0215778733d515143. 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/QZHN81999306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c208878a574868ceeb5302b114326974b920317d445b74cf6b49eb5ff34789. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZK6G2021390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0a51f47f73fd9c0cdff9a2f5c79360ebd6bd1349cdba7802b27d3f224b13fc. 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/QZFZ52134927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf455e7b41cc23aae307b9d152ec287d6f3e12de5a51b79e4782cc6b112264161. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/ARIXB2106033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd95c2bf0e0041a1aaf17ef01e3602c6d16877a4a60d81fe48990a9938882388. 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/ARIXB2201334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a125c136beaa66b277ad2dba9b43f958e5a0bd75a83d58ac55dfe7c08575b5. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:32:32Z), 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/ARIXB2201776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95ccab1e878b62554cc3c6b233210696290ac5aaf7d7880f856d3077beaf08c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARIXB2202136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a4916fb299911132b74af4d0cf3508451a62157cf5479793ca9fe1ded7268c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ARIXB2203038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beda2cdaecc877db0660e3b18443a428f01508fb3e81e3ecd6924a018e91d64. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:11:15Z), 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/ARIXB2207142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919c4a910881d7c87bcb759f9a5dcf823dab1e9d37c9fb5a37123914ad4c5171. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/ARIXB2207971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d6591b40489139d44355de0f09254981f542f2dbc91f3ac6dc00d296d05b88. 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/ARIXB2208722.
En Cámara Lenta (Los del Espacio) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509915d8d0768f231936eb51507f559bbd8c86a0dd09239c9861970c40a3b385. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/ARIXB2309282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaae8a057c0c06ac94dcca06effa33159ad176fb8ce6b83bb375837325222cf. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:38:05Z), 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/ARLKP2500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa774d773f682f3fee79ee60ad67cf3659d5a52fcafbc9babebb2a0673870c978. 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/ARLKP2500112.