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 0xe5ced972f3c1f433c204d06fe9796912111486d38592f94e31202506918914d8. 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/f96cce9f-19ae-413f-adff-2bf1bd353854.json and https://artists.proofprofile.net/proofs/artist/f96cce9f-19ae-413f-adff-2bf1bd353854.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 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 0xcefeeca79b807da1db524f11fcd886fe8f9427966d5efa79945828182548021b. 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/GTA010702684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743b27b341931cceffcd047b093da8a07598475183c99e05b3e5ebdcf2cdb5bf. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GTA010702686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07db09680c3e933f73bf0cc3ca031a70ecfeb1017e7133f894c55237d3aaf2e3. 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/GTA010701182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071c51d068e714c1df9a778070d2bb27b592f9df757bce7d42fd181b6d58c2d0. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/GTA010702692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691b02aed582de08d2956ade798fccda6a7001ad1ce8e382421e189cfb8034cb. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GTA010702690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49143f5b1e9d4bfacf024a9dbeca38aed7339ed7b0353619d308a712c834228. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GTA010702698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6fbaec1a16294ee42817dd18dc43a6c01553c07226f6217ed9de07eae42cc2. 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/GTA010702693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ba319dc793584ec43f2e5fa0ba1ddbd148076bc513fab890d972ca15b0ee3f. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GTA010702694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92482cc6edd9bc8cad6ad980d3111c3f11be7096ea407304e369ec16e0a249e0. 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/GTA010702699.
Abriendo Camino. Música de Guatemala para los Latinos
Grandes Exitos De La Gran Familia De Guatemala
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefeeca79b807da1db524f11fcd886fe8f9427966d5efa79945828182548021b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GTA010702684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743b27b341931cceffcd047b093da8a07598475183c99e05b3e5ebdcf2cdb5bf. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GTA010702686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07db09680c3e933f73bf0cc3ca031a70ecfeb1017e7133f894c55237d3aaf2e3. 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/GTA010701182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ba319dc793584ec43f2e5fa0ba1ddbd148076bc513fab890d972ca15b0ee3f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/GTA010702694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ca48f801242f8824607457322a8e84dea43f60a3512d0b926f8eefb1199ffa. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GTA010702695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb413aaefe6ca58266fd3eb4094c44412409241aca5a57b7efd97e474bb91e4ca. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/GTA010703473.