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 0x408434dde32a83ae6b4c3ff999510cc4af36ab83b14883ef4622394c229ec2fe. 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/e8b7bdd5-d27a-4245-87e2-b0e02ac8e0a5.json and https://artists.proofprofile.net/proofs/artist/e8b7bdd5-d27a-4245-87e2-b0e02ac8e0a5.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 0xea4e105fe8b22c6e0660c4171bd71ee11a05171067eeca9acbf2f62a0f88187a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:10:26Z), 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/BR4TF2100568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c981246e3d36446094d59a899356733a7b80446f1976e34c8f05411aacfa2c2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BR4TF2100605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96312c26169da4e4b8ced9b615bb62d07fe967765ca11089807bc0aa1deba68f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/BR4TF2100615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab36e72e50aafc1cdbb27f98867cb0c00e4231f00726c5c989954f83750548e. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/BR4TF2200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0db8b243f2730800c3263a21e8e56b99e80ddaea4e8c0e1fd1a5a74f561a06. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:51:05Z), 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/BX44O2200768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57d476db97f033ad594e608cd33387a612b25c3eabe6d89da89160d3b8d7c61. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:08:00Z), 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/BX44O2200769.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22580a86a36d62ff70fc6e2b2f7dad620807f9b092671081bb822cb2e676a4e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:55:53Z), 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/BX44O2201992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fd80572ec717013132ea34078ef1f30bfb65d572486438a687b8b9e2943d26. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BX44O2201990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b5b5a4340d553be44d47d69246345490bf3608f92f96b0cf85dd73b38a41cd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BX44O2201991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81c246acad79ff31e4f2238c1706ca5d9bfe69e602b9d23609422859fae666d. 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/BX44O2300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f095b43327d3a34a84c5f368367b46d502d6ee752f94ebee3c217feb98bda0. 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/BX44O2301250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee6f35ee5aa9422fe5dc1feb7a6d4ee3beb57b9ce26c7fd2d0d76372b47d687. 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/BX44O2301252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78616db1c4896ac98f3278528dfa354c4cc4e50dcb6a6b6702cd3ae7bcc34a58. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:00Z), 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/BX44O2301254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea5c215301642f7eb9b54df60d5cef610e67ca65b8b6f8e8c6813bfe581519e. 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/BX44O2301258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0fa5b761934a6dff949366ae0ddf7ecec83a4e2fcb8ee44a7466f1a22f84e8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BX44O2400844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3f8f0a8b7a1c403856713f3a1a852e32b015d40325a82f41829d014d229924. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/BX44O2400848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431a6a997fa7e45ac0593011ee60ca3d4384cb6fdcb8f95a45b54203811708c4. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:29Z), 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/BX44O2400852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb2e4fc54fae0db28ea63d8a817b5078010f99054886fd32680aabb2a5a1fee. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:00:46Z), 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/BX44O2400854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81b91bc46ac93fe48891cb89bdd6be6054eed492f696355ab162ddd17db26f0. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BX44O2402531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954f6303fdf601fe9484c6a68d652e85503a68b809a9ecfb4d63150ec2a3a4c0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:29:41Z), 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/BX44O2402535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dcccc27df48606f0a7391dbd5d3d6fc14f1fcc654a168225f273f8c2bb5a11. 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/BX44O2402537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf79bed671c842ca4eeb5c07ef41d4a71f70132a105217b8f5ebdec2645643e8. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/BX44O2404480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8443a9b0860bfee1911f2bc1ba661589d0858218221ba11e1a75800f2829688b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BX44O2404494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2044145e020fddb41dc7d15d534bfe6ef62d565a97f291a87ca7ce649cf1de3c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/BX44O2404486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7b72b31727c61ef2ddb5ce71fe22e4ae4d2677c146a2d5da91d933a9fe0375. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/BX44O2500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b549681641a6165b4d1d88a7d4648d8c4d1b1ae54b5d33c9c246123ac4109e4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX44O2202197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89b081343f997b6afe0f8cf54ff683bb2aa92a30996e6389a846f62e53754ce. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX44O2300986.