1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6da7ddb29a82c2980fb5b4ab7729f65d9efa2da73cde7fbbb2924b1728e28463. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ffe4f607-1d29-4f17-b508-eeb5dd052222.json and https://artists.proofprofile.net/proofs/artist/ffe4f607-1d29-4f17-b508-eeb5dd052222.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 → block OTSBitcoinBlock must exist at that height 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 0xc173d8144dbb04f2e22ae15bdfecd3625f3d8c9deef52dc201472b24a79c2e21. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:54:43Z), 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/QZW9K2495807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd377421d2b70e32c60920bc88a992cab2c9191338ef3a1c880e77b99e040c2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZW9K2495808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39eacab8cbd2904c3dd7e1190e37ce88dbd88a5f1811242170e718952ff988ee. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZW9K2495809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc8eff584ec2b9267f06c8c87208da197ecaa5cd023cf3687141eaec62bcd9a. 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/QZW9K2495810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0475fa34541c457e66039ab4aefc01998958f5ddd3eb5bcbeee51c61496594. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZW9K2495811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938b3cc99a4d7bc79e0f74eaea5e4940e287e2002d5a303d7ca08278b16aea60. 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/QZW9K2495812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf889edf45e1ac649bd7815cd9abca15e9f96c8592fe0c0615f97b803137a7b09. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:52:53Z), 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/QZW9K2495813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c110d9a20ef08e19d39d461086fb700b709fbc69b840c4fe579dab724ed22bd. 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/QZW9K2495814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dffb42c15867b8d487e9d374967b2fd4907e47b111888ba19b8a0b8b3ace0e. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZW9K2495815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b0d6dfe6f05b95244611c03d7739c1e4ac4001c90226e3cdfaabc10d2925c4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZW9K2495816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7a6892d1f1855ac0933fe69c0143c7169b73f7ccddf56ad009489dede6719d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZW9K2495796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb332964af0a3cd94a5a8ba98fd0ad247825c547bab27ecb2a7e555d96c56c99. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZW9K2495797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7321428ee19bbff9741115b3a0061ad5a97453a587dc7379b39082901196db6f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:02:17Z), 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/QZW9K2495798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc655769a438db449eb3ce427b7ff7f991c30ec15de1165d53cbf55bc6efd1e7. 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/QZW9K2495799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b12553eb8c3e0fe8e78f250be44ba27fa79aa3062321c7d6e36d9dfe6718d2a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:33Z), 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/QZW9K2495800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a99206d0fdae7162833ccf9b42bb71fd1b481918a2beb4638577c3f0ca69d7. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZW9K2495801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3daafe21994b41ed2636b24a21b1329898c6ac374fee5a2819face5a47528e7. 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/QZW9K2495802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659c636e237b2b7d3184b1e89ded3c87007f1ad21f662f3ffc7fd86cae8ebf91. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZW9K2495803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23a35864d72d8424a71d73f28f03563493bedff8cfb366af889310d116b8b30. 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/QZW9K2495804.