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 0x167bfa50875b230a85514bf9035b585ef3787b8be7e6a122922cda172663c4da. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2469169d-088a-45c1-b474-6a51d0daa083.json and https://artists.proofprofile.net/proofs/artist/2469169d-088a-45c1-b474-6a51d0daa083.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 0xc612a49cf9d2b5be7ad440212fd651ee67f9446ae67699186de0146435d704f0. 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/FR9W12301622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd39d9be601c90bb371fd2a00e8fb8819f1db9014f6d6fbda5bdf7bcea355fe2. 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/FR9W12301623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb486de80b770ab53950adb146e7a8e6c7e7cb2197c08e3dff5fe398e22022bd0. 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/FR9W12301624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c6c1a774be14a4ffa7092630af80627ac31a9c5cbb5d74ae4e91d7dbb4bed1. 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/FR9W12301625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c9307ecc031e42d599cfb75fec590ee8a9ae2ff12385a180964988f0c76488. 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/FR9W12301627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d34ecb6e1952436d4fec36adbca5f7a8babfc7fb95c2227d1b104c197ded5f. 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/FR9W12301628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50118cb7c0ed4ae9b422e18898e2d4cf993ff21805405a47c151d456a94ec62c. 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/FR9W12301629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ebf0d60dfb6aa5aef5e5be5aaf25a635cc50ff22bd2143f3d918186c7450a2. 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/FR9W12301633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a11d8b8f5cad8b3783611e71796d02eca2f1818cb9ee1a2468ed909a975d18. 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/FR9W11826928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c89539dd3e80966be5ef659e1329f526f532a0f463c944fc7c5e17bbc5f458. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR9W11826935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971fe5b53e41056f7d10d894b634d798acca37ea5f6cc38ea4369263a37486b0. 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/FR9W11826938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe251b071327cb39be68ce5e49ef1eb982c58279b15dac7a6941f2f8fd0b97df9. 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/FR9W11200690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d783fe165e6bb9e27dc327e6646f7cde0059d03322b055db80f1a93588317b2. 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/FR9W11317225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe251b071327cb39be68ce5e49ef1eb982c58279b15dac7a6941f2f8fd0b97df9. 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/FR9W11200690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e32dc1ae437fc5c58488f4837d274d9348164de7b02c3efc053d61e343b46e. 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/FR9W11200694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7345fcd0340f6f178d61d978ab88db6a0aebf01de2afaf81758c22b93bea323. 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/FR9W11200693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e03e01005f8209ab74d84ac62df306605ce9bde602d2986ab2d0c549ef0111c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR9W11200697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88b1c062f35d756315f83c127d4da07477c54ab2a75c94ba198ff1f82794cf8. 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/FR9W11200688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c89539dd3e80966be5ef659e1329f526f532a0f463c944fc7c5e17bbc5f458. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/FR9W11826935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bef6c9024faf1bb8760a14000799adfdb5e80496e109a2dbac64980c3005500. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR9W11522241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf3937cd48be9b1dc602890b8d04a32cb40d24d60ae5a7ec83f77ed29a3cf17. 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/FR6V81173733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd762693be18f2c5d2b69e097f40dbd0c066f525f37fe36322d67957cfc38e47c. 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/FR6V81173734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285a5c8831bea91c94acc70e25f928bc32d187a7dbc9fd474e8d48d9673b8585. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR6V81173735.