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 0x711085625bddbbd2d78d571d32d99d0dabef4108b0a19cf95d0284358f718d24. 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/0770a086-61e8-46ea-97ca-1416ccf9c0bb.json and https://artists.proofprofile.net/proofs/artist/0770a086-61e8-46ea-97ca-1416ccf9c0bb.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 0xfb89bd302a5222386f106eac8df5537e8c9e7d6e69c11cf1b25071205011cdb8. 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/SE5Q51814625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c72ad7fc891ddd12ca4534782ecf93a33237c526697ad9b84414d88e59cbaa5. 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/SE5Q51815598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c00aa1f270d1abfdb6e2912a48f3bb3b807885960591c7846095a3b1c32ddc. 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/SE5Q51811828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc0a04f1b93ef8261dfbc66970cc3e21870325bdc18246bcba22dcc2ca09275. 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/SE5Q51812394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35feaf2264d1b3867721844e670f590b83a8e962bc5bffac0952e57f080043d0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE5Q51825502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa20d57712c3f5f34d3057eb1988086da3e81a68d7245a729606ef35f60ee1b6. 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/SE5Q52300678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ee0c36417bffcab0b0e852cded70e32a78aec887b8ca34fc33f9f76717b83c. 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/SE5Q52301252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd3601028d5013768e3ff1dffc96287b401d19c5446668525404067d3f129b2. 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/SE5Q52104523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cc2c9b36c9fd563ee9cf04e97c159bd2df02cde0f61e08442a58f50992789d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE5Q52104267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96ef395a93bcde9a0a8c2be3eab1bbcfc5664ef4cba02d203f49b85a68a07c5. 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/SE5Q52103497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cb3f2a77b9157dee264da9169f13a5513e66abde3d92af00a2901f7aa852b5. 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/SE5Q52100963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a950b913fef36d8efc213d36608ae12f39d011392098095225ab172c5d8bbd. 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/SE5Q52100925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834a8cb7ccf28a49a7b505c4ac2478165c02ee41eb524d80d380ea98e069bb9e. 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/SE5Q52101721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24f54a23ee215f102bcb6e3554b50be7ce8a888122de0f2a17aa32bfc0ff05e. 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/SE5Q51824833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a27ee76c6fc843f00d9ec7dcef2fac60019065a36ac0026145c2d1d986de5d. 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/SE5Q51821023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de3f04a2842fef4f496f071b71f881e41b856464996c88bcf896ea2c0136cca. 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/SE5Q51810566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9cafca350eef9dbc186f8d681c1bac3fed7d0335e5a197878a13b3a949302c. 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/SE5Q51817475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27e4ce32f62c413a303b89187ebf9264f833879d677f1c575b500d98d8020e0. 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/SE5Q51817702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ed934ce5058a8fe644066c02660831344dce4ccec024dfa88cbbf18c41b976. 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/SE5Q51808302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd871f01c9103edf506d1ac867dadb6245dacf534f7f20ffc885215f0f9232410. 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/SE5Q51823208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb738f137ddb1f19ab9ebb1da94e659f2b8d7e622e16d41675d4963d583fd0598. 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/SE5Q51818335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b224174b8af50d71342fe7f924631b169f0afd5a9b8a2e24b30a8029bb63bee. 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/SE5Q51812880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1ba8a9e266d3854fbdb6a78d1ece2a0a97d63234bd7e3b7c1c115d1026c1d8. 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/SE5Q51805687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9a35c291e7a5f4bbfb9aba5f1ef01dafd31dcb99e735ad383399f580f19f5f. 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/SE5Q51804607.