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 0x283187fbcf26e311dad373ccdcfc53de251e88da18e157b28d99d8906197c7a8. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7d9a67d-a1bb-4c25-88f1-2385b53bff36.json and https://artists.proofprofile.net/proofs/artist/c7d9a67d-a1bb-4c25-88f1-2385b53bff36.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 0x02d98398e83e6bd2bb8e367438892bb6ef75306978635acacd81a1820b35a055. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BC7T02100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393b91f51574cb7af6fe784e4934b3b214899bc073bdb5c03e238070fdb95f3d. 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/US7VG1682372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca5c4f54858139ff1a6be4267573af0817a626b22b41c1c28f27dfd31779c2d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US7VG1682377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83fe3ebce664ac6dba2a23d0fbef02233d5a48ef8ddc5f997265edc3305de0a. 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/US7VG1682379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37aac00c225dd49825b97edcda4544d00fb3fea69fd57513b7edf18a5e2aa8fa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BX6NN2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa304a41ecce67a61bf7bd912f5db9cbb9bbff1b564351d3d1ed896516879aaa0. 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/BX6NN2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3561e836f81291df770a2a44873e2361825341e130034a5822e78d68b96254f5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BX6NN2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d66c7c77fddcbcca68fca4c9179dcb0748f745c1cbe2a53b9da08d6ace79ed. 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/BRC1S1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d98398e83e6bd2bb8e367438892bb6ef75306978635acacd81a1820b35a055. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BC7T02100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd410aec3bdad9b3a3ec07e27894d84dac97b95705a4d5fbba75e38df13056a7a. 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/BX67Y2500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78913802ec4c4878a5e715bf861039898d25334d03c60e0f9f3b7b1e961a9891. 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/BX67Y2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d0dcc710dff4a35f1bf3c1f90a549183870622c28bc0330a84ac9fa6a3ed0c. 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/BX67Y2500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420ba348a48415736a6bf4bef9e569222d4111db2e7f50bd2371f99b15371470. 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/BX67Y2500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9614a0b85eb8418b6a254b76ff615e40e40cf52a3507fea8ef2571a4275000a4. 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/BX67Y2500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02020f0a77ea1ef0e59010aa7b7d3a86a993eecb092bedf1b8fa48b44add54b7. 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/BX67Y2500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ccb63b919a57b900d92420fae6d7ee7b3140b5ec3039d57a92b8592760df05. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZNJW2528762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3275b6b15e2a67af1745aca9303fe029a2d7f3db3a03d5bd0bea34141299f6c. 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/QZNJW2528764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132c589dc6f20c649d908208bc9901981ef384fe0540fe65dd461570e1cd721f. 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/BX67Y2500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b3a89ff4f39a6a68858d4a75bee8d0f4182459b3cb7c31e9f4dd1f08c85009. 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/BX67Y2500036.
Antes Eu Gravava no Armário, Hoje Eu Tenho um Estúdio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403b6f14226411f4bc367069dc241701ef981fd1a6e08672a4ba12371731615f. 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/QZGLS2521996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416071182b9cd07c8e3cde6de854603e47e2142d0920d9733481d79ae1120243. 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/QZGLS2521997.