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 0xb68efe55d7b3331cfa28d63eac1645950d5162847e2c87ef30f60e0995dd42f9. 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/2fe5213d-61b5-454d-8c3a-c681004fa900.json and https://artists.proofprofile.net/proofs/artist/2fe5213d-61b5-454d-8c3a-c681004fa900.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 0x951c83ea92d67dd8838a3d9a88c8d627237aa50601bc60e77b4c70802e00a9e4. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USCGJ1777171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c2c701c4309f2adf1c97ede6da22219d98d53236ac131899b7339faf9566c8. 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/USCGJ1777172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd290f1b0c3ed5b4b1b70f233c85c84c2ccb91ab865c63c9a6aa34d60e9571a9. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:41:46Z), 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/USCGJ1777173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769efd2b6488af6aa66cbc5b59ffec1fc125b34e5f91c26d2c760a9beee58b58. 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/USCGJ1777177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4202ec8d025be01d4604806da2e5d441513ebb4386c69ce1e6e8563ee48a0a. 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/TCAEQ2097133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc1f57b3150fd07250c454d97a408fd194d0b946bafce59c2e982a3de404900. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAEW2079164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4a494292c10a5c53466133fdcd43045e0f27f8794e7dffc8a274bf9106a33c. 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/TCAFE2001769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb0d1a719e3d5c60e63b1ecc9db73545c22b5e8e6a1c3740dfd33e6a3c828a3. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/TCAEZ2071584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c784649e3845a7fdb87fb72e008df45bff1d154dde4ec979fbaa6142cd060c9. 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/TCAFN2198466.
Transmitiendo Cumbia y Alegría, Vol.2 (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699356c6c7978908ee46b11314bb1dd0225f5ab7cdeea1d10ba5f408ba8c17c4. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCAFX2198940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a9ca66a0863d4a40bb851d5824b3de5abf92d731f7ae9f02963fc073544d19. 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/TCAFX2198993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5c9956f8764f39e1d54b357621593e73760cc972e3633cb7674423534e83ad. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAHH2331919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5df1f9ff1d945025d12bfd4cf415a65d08aa2d80c47f405083d520e2143a194. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCAHJ2306528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e899abff434b810d89db571869723f3a601bd88d4a32686be020a980d138720. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USCGH2487661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba0067237d8cf8266d60b1125b099ff21519a18e1523e993686614056ffadad. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USCGH2487664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a63bf9682d406c0bce6daf300b7a8899e7d4daaad276dd38b9e14522254969. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:21:03Z), 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/TCAIS2410218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d84e28ea818f5c2b5fe96397a387a48aa91f830f0f1347a4772befdaaca211. 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/MXD782103204.