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 0x96377b8079ab2cf119adf0cb997c719bf4d4bd04bbb618a653aafc038748b76e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5b697da-1108-4a17-8e17-c73a37d8c667.json and https://artists.proofprofile.net/proofs/artist/c5b697da-1108-4a17-8e17-c73a37d8c667.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 0x51a3555b06011772e0d5cf2fb47af0b31db24dafd936322b3ec646542cc9a2d8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BXLDM1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc513ea9459f1e435b8908c9b0192f843e149f28a13db71ad9aed655d555e91. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/BXLDM1500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a898368906e3592fe3b0b58a4ce04a68d8f67d2870ca9c0fa011ae72171882c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/BXLDM1500009.
Medley: Vou Beber no Cabaré / Virou Anarquia / Nem Que a Jiripoca Pia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56dae3b506c74ee1353999b62f542e6f7e17caaf1566a00c95834929099dd24. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ESA112320929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2331e68a61ba1947fc8c99c442c1659688fe4ab41ec56f4698a032aea649f0c4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRTVB1600433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9dc87c4c9c549b522a1548c2127056cf5cf4d411c2602def9bd90966f01bac. 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/US7VG1624435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5266086e2000b6103b60ae35a9ca0799b605b085b5e1d70fe055547cd5429b7. Chain 2 (Bitcoin): anchored in block 957791 (2026-07-13T02:46:19Z), 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/US7VG1745277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8934d985aeba88e5c35907c41c1c06f2330e15338b3d93bd0e1436ea5f169d38. 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/QZ5AB1890678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4caa44cb234e174aad34a2561121baebbaea6a7ee72534fa3c1bbf768ef78357. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRR001900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca5c6d1f935e2304956edaeeb0aaa7bd276aff788e6c21e44ec14a3623b0c72. 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/BXKN32300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f2239e65c8e3e4b6ecc26665abf0dacf63f68350219384f4720b4ca1a9578d. 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/BXLDM2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb6aca9e88df4e1e029d7e5616da3907dd85a8ef4d9ecf4eb6090bbab96d439. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ESA112435371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e05dae1f864c23f8d14648d4054439176bf9bd1833aeb1ddf115701bc30c2c. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:44:16Z), 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/ESA112440617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe586df6bddc915cc6224ce679fe1c8d950921cc8ebbbbb38ab869fd988ae28cd. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:07:04Z), 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/BCZ6R2501543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929b9ac80f4974c2ebd325c5672fa3dba9d79c8e87c0a30c3d58799be6133eb7. 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/BCZ6R2501545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276228cd2267f10cb8ad66e4dc792d600a0eeba68645fd60cc9b7c1030affbc2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:49:20Z), 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/BCZ6R2501546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa812bcbb72e75fa417efc0a6934e608c34c66952394c281298d91ca16ae50003. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BX4IU2519387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c845b943895866ec28763ce9dd86ae2fe13b0ba7a206f1d69fe967cae3bbc1. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:32:45Z), 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/BX4IU2519416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38f7a241d906faa738810d538f8b6e5f2bb26053ee608ab0c1429726706b8cd. 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/BX4IU2303002.