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 0x159a5fb4e7e130570055907d1319a664ff2d12b5ffbcef4ead4e5ebb3480d377. 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/e307ed64-be21-4c79-8d7a-fdd780f18c03.json and https://artists.proofprofile.net/proofs/artist/e307ed64-be21-4c79-8d7a-fdd780f18c03.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 0x1d339d993bb2936e15f3bf67368bbc340e36a2f6c943f9f0be44ee809e05b542. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USHM92000465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea8f91fef166f1bf3d9c599d23333e547b8f3355fa9ffaa61eeca2c465d89a1. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:01:59Z), 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/USL4R2030271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6cf2fd3a97fab25cb104ff6c03aa8292bb9e8e5ddea398e13a41aa6bfc4fbe. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:51Z), 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/USX9P2098972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a834c18613d21fdecb472bbb053fe7cd64d475490e958a879843cacbdb9a609. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMZ92102556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0610ead925cfa94737493b4eef1f3d3dc239a8b2b336c01dde2a408cab9124. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZMZ92233046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9769a62e4547cb943435df7b79d81de6f7f34627bc96015e2e33f731aed3299e. 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/QZNJY2229645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3fcdee32607ea378e6647981fe9f3c4c3a3c85851ae838deb327f4bbeb5743. 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/QZHZ32184212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d45260de4c1f8e91d097802150300bea427f0c901b97b8dd3816abe4d22762. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCGJ2138371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a834c18613d21fdecb472bbb053fe7cd64d475490e958a879843cacbdb9a609. 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/QZMZ92102556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70482df52d202b499e0eeebdf525d2753d4ec934e39f15d35b4fa49a93cb88ef. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMZ92341724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9769a62e4547cb943435df7b79d81de6f7f34627bc96015e2e33f731aed3299e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNJY2229645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2958f74efd00c78ab949ee5edd9ff2a3bdb7528b10da30b306ce5bbd3f654415. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZW9K2244168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0610ead925cfa94737493b4eef1f3d3dc239a8b2b336c01dde2a408cab9124. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:01:16Z), 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/QZMZ92233046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79af036a74dccdb708963ae7c43235786b047e2922613421d10aaea2df6657ca. 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/QZMZ92341725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cbd07d292aced8a8dc31679967c8342c27cb7dc986cd51ddbfd9a7b5a6a28d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZW9K2405429.
Aguardiente (En Vivo Desde Cosoleacaque)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a95b5bc43e5de39a9a28d0119671156389f1486ac1736c0a9fb835575769d66. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:51:11Z), 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/QZNJZ2550246.
Ska Pa' los Olmecas (En Vivo Desde Cosoleacaque)
Ska Pa' los Olmecas - En Vivo Desde Cosoleacaque
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abb8664c2b7323b2ff0a34aa6049f58792afcc527671d9bc38df87be3324186. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:33:47Z), 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/QZTPX2599724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d04179844b7c2996bb36cf2dcd2070d9e323693dc86949c7f0331912ea32821. 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/MXUM72008527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d04179844b7c2996bb36cf2dcd2070d9e323693dc86949c7f0331912ea32821. 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/MXUM72008527.