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 0x212bd9bc45e30ed0e2b3df252f2293747ec21dc855713e584e2e957f7d96c4d2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efa00048-1dad-4018-be4a-1bea0facb248.json and https://artists.proofprofile.net/proofs/artist/efa00048-1dad-4018-be4a-1bea0facb248.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 0x39607aa47ec1df0ef8e57ddcf7ae4a86de60d458eeac2d430107fe80453f080d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA0WS2213301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b51359a3c62c08463ffac0072ad066ac28be10c67b70436b5689f07829d5558. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:32:14Z), 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/CA0WS2213302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bab08af60d4ef65a4d45ad69909d5debb7087f3bf8109a764112cd297e39082. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CA0WS2213304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6c06b5a3962a4e76a38b9d13c1e2243e340dc3f805c59763809a9125a6a95a. Chain 2 (Bitcoin): anchored in block 957287 (2026-07-09T09:48:29Z), 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/CA0WS2213310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dd0e79d32e7957c4c89d6ebadd5ae5fc7163a391e1f70f1cbe70d76821ae4b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CALA12000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea578f323b17ae772e4f7ff5f954fee6dfc7fdd610f72b24660748aa7bee068. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CALA11500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08d22de266d7793d067ee16c65aeadda08e14319f2f34e2542c1d4865bf4c08. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CALA11500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe979e864e1f48dd4a0b5fb22bcb8384ac8e6804e3c7647a2d1f5ae6908270ebf. 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/CA0WY1204001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff6a90bfe337397b6649119c5b002733b99652f696e64f78106e4ae9809a587. 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/CA0WY1204002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070303621f8c691f6d8f2c50e9d48245b2c249f61e156f4b92bed2a8a61d9c73. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA0WY1204003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c173fb752a3be98453fe78020319425d043e1a7006824528100cb8e5f4161bb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA0WY1204005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e422ad3a8ae9ef45993691eb0ef4360b276a9e6d0aa2c147781822033428c79. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA0WY1204007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9483c9b5782cca4657b51b2e7b6e970531754ead5331abfce89c7a24995b79cb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA0WY1204012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe7de8f2377e2c5262710c1feaaaff68db64aaef42077ad154ff01165aeb332. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CALA10400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e4925529d513bef864af0c5182c9b8942bf870b9d16e4835d1f6e9f1d67413. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CALA10400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6473c03d6a8fb7d42829c53ddbd92c0214cf7fcfac326f45fd854412e2f98abc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CALA10400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4d96b4d1b592137be24256d0443f11a7cc4379a9d8c0ecc95ad5428f82ac06. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CALA10400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a6f47baf6050a123b50af16be20cb27563504d625ee7e50697e7843ef5f514. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CBFAG2503001.