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 0xec69566e7d356b008b63129027c4659181034ca7550cc9e99f738a7f961db155. 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/6d2e1a97-6dc5-435a-bb57-9b0a7dc9cfe6.json and https://artists.proofprofile.net/proofs/artist/6d2e1a97-6dc5-435a-bb57-9b0a7dc9cfe6.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 0xdb3c75c131f5c34d15b77344a2e14c0690038c9efda282168a37e4ebe88d93ec. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABL1342826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284e60485cf55a11187cfd286bd5c8f795d3a00dd2621102180048a7afe424b0. 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/TCABL1342812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cefcbd6b9352398c6334c365a2735b0fbbf3147d029baac33e3ac8468664b67. 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/TCACA1415791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cefcbd6b9352398c6334c365a2735b0fbbf3147d029baac33e3ac8468664b67. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCACA1415791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd225ef9161abfbfdd4656de39e851e97501959b985cf095dd73457e70d73bd53. 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/DETQ41400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60293a66065f684139ac5ce7c2887891f0bd5ef87b3537360bad2cd9ad569102. 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/DETQ41400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823848f0b0bae82b9774b3101ca9c64dc48f9ce232787590a583b54c32b9e31d. 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/DETQ41400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8fc86a985e87dbdf1ba12f09266852ecbef560cd2c2aaac5bf189387306585. 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/DETQ41500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8fc86a985e87dbdf1ba12f09266852ecbef560cd2c2aaac5bf189387306585. 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/DETQ41500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823848f0b0bae82b9774b3101ca9c64dc48f9ce232787590a583b54c32b9e31d. 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/DETQ41400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089efff455f888d071a3a2ee87af875f5df6cbeb7f3e1e19b64dd4954dcbae34. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DETQ41500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea90ef367e1b992f7a36264ad0cd77beb1eb72bbdc5f8d016ae0d406c2f6c2c9. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/DETQ41400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377daa06f1729100f3104c2ca8ceedfe004a3bb4b8068595c152ddb0baa6b353. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DETQ41500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba9ded503bdb849a74887168ece4a62e56c7d70d27fe24ce766f02c92abbfed. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/DETQ41500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fae71f13fcb11769050031c64f6f8991d30b447d2533b142e5a0d00bb95145a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:15:31Z), 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/DETQ41400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707a5d90ea4795c7610c661972e35130c0b85c3700cfde694e65a9190025897f. 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/DETQ41500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c7e71da22c4070afc78094a2e320f9cfccb0c3ded69b32b3cb7725452afbeb. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:46:20Z), 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/DETQ41500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e728888271f7500659839041500a699fedcbe5406c13f2467dc55ae4a1bf541. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:49Z), 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/DETQ41500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05796df69da1e67e64be1f5e49c50c9f46546d05f95c20881280283fd6c3ab59. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DETQ41500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16af0e92dca9a528ee79cb64f09775136b7c2dab9205e5efc698cac35ba573b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:25:14Z), 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/DETQ42000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd39bbc5a02b78d1c5976eb6ca1352347e8d7ee582b16b2751e35de7f62e67c4. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/DETQ42000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973983f44dd1fc9c720f4567368ee1ba805bc8876e7452f31c54774c9c216959. 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/DETQ42000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c765a5c022473a988615ba14c3280ba89cc9e98a4c118d7ca7876f91012909. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/DETQ42100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf147e5a0be93e4e0a202d86269548ced7a99cf1b56e63d50fa8e417ec195c43. 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/DETQ42200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9fcd5bf8ecfd37d8f7c2ff9c2d5178167a9a27d8dcbfed47ed8847f6e59207. 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/DETQ42200043.
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