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 0x36dae24ba1c5e4fd6ef8e15b552917f1eaf16fada5958603d11f28a9ef208ab5. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efec33f9-1570-4331-b3ef-eb20ee2d9bc8.json and https://artists.proofprofile.net/proofs/artist/efec33f9-1570-4331-b3ef-eb20ee2d9bc8.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 0x58ed9e3c96ad2d668158280b6187cc069aba963c1cbd63401676917dbe1409b3. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/BRCID9800358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6d743f05391cc4e2c2a22bf37769d4ababa734c0e5ea54ae84ed9abf5aa747. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BRCID9800359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f541b502f2c2342cc592bf8045dfb94e0de4363bd6ed9b97d5aab357a08e2a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRCID9800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d595d646b84a4625996f2bd800ed24713bd3e17eb150089f4b2efc8311d2dfd. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/BRCID9800361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a2d899f0ac2fc99743b990295d6385e6b86dd2eea3a09c4301489bb1f050d2. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:36:41Z), 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/BRCID9800362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b878d749bc8409a4de32b1bc16cd77577d08af815d357fe8e1da40b30b94d00. 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/BRCID9800363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff47f696d36ad439c2ee1b5254c94c68b6f63f0112db960a53932cc82722c4d7. 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/BRCID9800364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e25bae96ea80e9982977a373dc836bbac6e2b0598f3f029c195b2bece49ae0c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:19:42Z), 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/BRCID9800365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd2932315df2b0349f5eca7361b6b17a198f79c899fdc9b1de921835cd1d46c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRCID9800366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9916b9426eaaeff1d01ca228b3a8b374e713b8a7f74707f37d3dda245cdda86f. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:04Z), 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/BRCID9800367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5e500b141f1b5c72766eb59ab453cfc4c7623e3f795642c780c92483a394c8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRCID9800370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dafbe7778a37916d7c124fb5a8b552174a999094cd3f4ae46d606af13817f0. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:31:47Z), 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/BRCID0000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc756dc147e245b0b54507147c41d3f0e96e38b2c3a5a3e79f53baab16aa03e5. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:07:41Z), 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/BRCID0000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b4b7f3929c50af8017611c871fdc30b21692ddda714c01e99967ef261c379d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BRCID0000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4415ee2fa5812a497cfb087aa8d2dd5fc2c616c4759a7421b75c79fdb9e47a3c. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/BRCID0000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ec6fb416e94fc86cdb0cdfde64f90a0564c9b42312e113da29a11735667ff9. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:11:12Z), 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/BRCID0200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa483270dc67c15d28ab60847d84fa19e25dd56c6fc96d593cbb4720683947e5. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/BRCID0200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ec6fb416e94fc86cdb0cdfde64f90a0564c9b42312e113da29a11735667ff9. 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/BRCID0200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4317eb66e7b191ffca967bb7f838db089b1600506d16cea7365f2af6dea150c5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BRCID0200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ddac5b93d21f47ffc1b854473cb33abda2d1e4c14f561774b8671ff58b43c3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRCID0200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f541b502f2c2342cc592bf8045dfb94e0de4363bd6ed9b97d5aab357a08e2a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BRCID9800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ed9e3c96ad2d668158280b6187cc069aba963c1cbd63401676917dbe1409b3. 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/BRCID9800358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6d743f05391cc4e2c2a22bf37769d4ababa734c0e5ea54ae84ed9abf5aa747. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/BRCID9800359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d595d646b84a4625996f2bd800ed24713bd3e17eb150089f4b2efc8311d2dfd. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/BRCID9800361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a2d899f0ac2fc99743b990295d6385e6b86dd2eea3a09c4301489bb1f050d2. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:23:12Z), 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/BRCID9800362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff47f696d36ad439c2ee1b5254c94c68b6f63f0112db960a53932cc82722c4d7. 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/BRCID9800364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e25bae96ea80e9982977a373dc836bbac6e2b0598f3f029c195b2bece49ae0c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:07:23Z), 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/BRCID9800365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd2932315df2b0349f5eca7361b6b17a198f79c899fdc9b1de921835cd1d46c. 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/BRCID9800366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9916b9426eaaeff1d01ca228b3a8b374e713b8a7f74707f37d3dda245cdda86f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BRCID9800367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac2819a1fa517a1abfcd71772ad9489ad614a83e5535c1a309dc65d8a194e4c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BRCID9800369.