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 0x5252db7d8a8af3f45ad4e435480a79b09987873e24e25a22bca646d7f094a136. 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/c44313e4-8249-4753-9343-ffd1a8baf461.json and https://artists.proofprofile.net/proofs/artist/c44313e4-8249-4753-9343-ffd1a8baf461.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 0x466ddccdc82d6dc3a20874096b5120444268d35e63713c1a4f80ec3f0c7a4c3b. 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/US3X59300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a493e860c9c306a485139eedde60aa3aabd849a3c3deb3099cb0775dfe4019. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:16:35Z), 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/US3X59300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0d89f258350d6af7f23884979afb1c64b5d88d48d59175fe8efd6ef60b647a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:36Z), 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/US3X59300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011467bb42467b96fbce19b674e2a6992a903ea236bb251694e84f902897f5a3. 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/US3X59300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9addc6bc9d7eba67b83d5728439c3c5a50217478e97ab048d640300e23201c8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US3X59300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013a59f857f1cfd92e46f430e64e90ba3398f60717d604ed3d69b41ef62f705f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US3X59300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e32aa07382c6e93a1eeb738040d9980a70ab77444acfe85225e8d1070d74d52. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US3X59305011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df87d9ad5962e08e2fcc9eff0e9c70639f9d830ef75a53696ed96b199ef4022. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/US3X59302504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fdf05479c1eb0257d84fbd9bef33ddce18c703fb2d7146eb58fe8ce88409bc. 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/US3X59303801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c5d44dbe7c40c4524aec94e47512e43c91bc3d0fbd04b42548394604d065ae. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/US3X59303802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176fe72d586f43564efd7a8e8267a036d4b62245e369695c1d7537160352c462. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:43:33Z), 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/US3X59303805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296c4d8d86035f77141022f6db64651b0ef38a2a243df74666964b397e47a341. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/US3X59303806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89635a4f6fda79ddcdb48a2305cd84a9edda49f3f98a24d35835bed6caaf20ed. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/US3X59303809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796594ff26e39043835c21603e5c5c1df09ce5a3de6d8a137482cb014dee907f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US3X59303812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00ec95a79205f5856247c25d5dc7bfa34077cc5dd879e73110431834b2b509b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US3X59303813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d475346a938a3ab86920f78b7769df0f71885ffe3500236932a4360157d1c0. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/US3X59302701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c791b8c845a823db528c2251052a47b94c69154b46815d21ea9e5bc74d1a49. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/US3X59302702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c4a3ede84ed8e38c535bcddf6969a92906b940f3e32803e3fed6757831d0cc. 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/US3X59302703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955d7c05a2e7abf131b06fb12e9aad83e1720c5dc8a6447f6191bff5647fea61. 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/US3X59302706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafde4b15327fb81f3de34e5f9f5af06f041a0208eee5f6b235bbd6b6c0068ed. 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/USDBY0904859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313f57bcb88801477e44c81e7c5bfd3c09ea46fac19230bb80124a46e5c81080. 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/QZH5R2000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0ed43906270eef23e5fe5519595342aa9088467e4dd85e30c1b2e7abf3d562. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USB4U0471025.
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
Let Them Know: The Story of Youth Brigade and Byo Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30718860e655a6a93fb4f392622bd108766b3af2317a7d9ef802d513844ea8c5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US3X59312504.