__NOTOC__ Carrizal may refer to: Places Europe Cerecinos del Carrizal, municipality of Zamora, Spain North America Carrizal, Chihuahua, Mexico, a small town between Ciudad Chihuahua and Juarez
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 0xbac349e7b256f8994ed307032d67a8a362b175c4ed46bde54b7ba212e8f7c3a5. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05662924-7332-44c4-b2e7-388f92153963.json and https://artists.proofprofile.net/proofs/artist/05662924-7332-44c4-b2e7-388f92153963.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 0x822ab4539f0f4734d9f4175deac669950ef63af17e2c010a53f56aeb093b9f07. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTVM2365688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6636344a4767a6b14d31e753459aae3762bf4aa0dcbb818300295c5f960879f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTVM2365691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb7b6b9e21c6b31dd5dde4b73a39a530dcbc682c904eebb9e17bb2582fcaecf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTVM2365692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2993e01b9843dc5e9aa3142596fe69ac17749b00ec7d7fb66ce19563487f8ae2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTVM2365694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd56be7aba17a0d96c72decb10eaa78fb3584f8a456be23c091fc2ef5f98c657. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTVM2365695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ff13cdf7eae0890ea4cc2c6df3d9b26878bbe448ed9ede4cd841794ff7e774. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZTVM2365689.
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 0xb0399b1cc41357b5610c5fd67fb6578a566a96a85baff561ae4f1d997b589363. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZTVM2365690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8c982222582deeea29d2e74b3a5ce14aff9173bb3967c33c50241f6fb7720b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZTVM2365693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3a5a4cafdf6ef01d8e12c0ec4bf10823202d171704d543cc91ba9bc17fd726. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZGLS2441078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7afb970610f880ef02bffdb8e50be37e1a701755728aa87726d3ff2b4d5006. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZGLS2441079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3ab4d868938ce755c8aae9dcf1c9db8dd88253e26d5fa6be0b26c5c38cd19c. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZGLS2441080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a2cae614a4083315b7f43d1c6caa889c98f13120750e76493669e5a5f6b8ae. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZW9K2421245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc675631f4fc29ec50801f54888b3681a50106c93ffc1e8a8fdfa0bd395527bea. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZW9K2421246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e75bf33d30c087a962398f95fcbdcfa95ce7ec04f87681e81682e55f61b7dd. 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/QZGLS2572337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fd0db830fb563a5cde552b7eb5ec5c6734b023858880f94b357a77cc5c9b97. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNJX2510224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484a2662e342664d84dca41037b10c8a96ac53d62c7e2e6f5a5d166f221b3ae8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNJX2383213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b153f5398f1635d88775bc8b0d5bf173eabaeb9c7f710676aedd64e5de36609. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNJX2383217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0a7036e92614f772d7c2e7c45744106d53d21b729ae93614ca68bb7ec9623e. 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/QZDA52437579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5c727df6dc1b49bc5b262e0f43ae30d97954f13a585c70e581a1fcfee44e09. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJV2383619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484a2662e342664d84dca41037b10c8a96ac53d62c7e2e6f5a5d166f221b3ae8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJX2383213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b153f5398f1635d88775bc8b0d5bf173eabaeb9c7f710676aedd64e5de36609. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJX2383217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01300cfd61f67572beace8a7b7e3f3c5a8c4bd2e31f0267c0c15862e1aa8524b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZPLS2119249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed850d096877e171e4e9b3399342a9b7149a74db1f8939257f55e6e011c3face. 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/US7VG2114288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84aea946b8f81d91666827d238327c26a2c4564118dfc6ad1df6aa4f4875094. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGLM2099079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813eb258286c976a0dff66901946f91543e883279b606b582fa8898c550b9d8f. 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/QZWFL2300905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92b172940d4784d4e75c096d21839d88661f1bf2689b33884cf0ba65c743a1a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZES52257648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f1740d1e0e7e13106b32d6d9b1dda169760baef6dbd8ef964249d538dfe1d5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US7VG2114286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3836512809045bc19823a167e7eda2feace583ba82288d4f7af5a6cbf17485. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZWFL2300911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35923f66b85b08b77451b69deda4dc2f891d615c0d6f183474d473c43823428. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZWFL2300918.