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 0xc0940b62b73b2209510b6e63313333a2e550bcd963ad89c8935b46a2961b70a6. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98e3c007-2e56-40c7-ad99-a81ae9e436be.json and https://artists.proofprofile.net/proofs/artist/98e3c007-2e56-40c7-ad99-a81ae9e436be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rainbow Melodies 10th Anniversary - Remastered
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 0xd550faff5e7ed7112226bfec0e53017e87e7879ebcc027c6abf193f4f16eaf29. 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/USDY41838261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876b39967f8c8e6063dd3641883a9257926003134b4a67f6b9213b01051eeeb5. 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/USDY41838265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bbfd477ef565bd6fe4b0eef1de85f97547656f625e02f5421f103b362b0d23. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:58:46Z), 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/USDY41838269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf49bd41f9f3586fad933a6d2042e65f8adfced0d56e7a943f3962699647cf4d. 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/USDY41838271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4b8acc5383980c85a2f24236f8412c48311b6631628cb279f8965e468ebc64. 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/USDY41838273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3f4d3c974c322d03f688b020459fd5470296933a7312d507e47308a03be838. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USDY41838262.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c54ff148f38de428a8280f792649d6d3b9baf68ff94cfcb8b48621e8bdab97. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USDY41838264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1841222de0a6bc522fd33e3bec10433a4005f09f37e0a84559a56457ba3eff. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USDY41838266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e23828e04938734f11816913ed2c8ea6c2a47687ff4cba5cb99ae2ab9e66838. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USDY41838267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6638b86b4adc18540eca58b3e0d3659c92717527835acee0723b84f157939b4. 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/USHM21947184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3942b2b301492a1811c18d5ae28a15cdee3c5b3c54473007e83b0f3652a3ae9a. 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/USDY41837991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54fa2d4fa528c880c299bf9501db2b46fd1d8dc061dbd35f18040130b1044cd. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USA560783563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2706936f71df357d53b24007ce0f92ecde21913f6808ad2609c2ba2e0035b89. 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/USA560783564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67245be0b958bb5f5ecc3d2ba6003fba87ee9b4abe0acf81c98d9373ab484a3b. 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/USA560783567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1de4be08876b4b5d4ed4f30ad647a0a3866af6f3873b33596c6173e38544fc. 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/USA560783569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4705895c262ac473b9878f601420beb76ee1edba1ffce22fb536981373b02380. 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/USA560783570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6fef4022f40dda7064054783255688c3bc4f887744553d01a24c4d6d3b53a9. 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/USA560783573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611af0a8a426d71b6002ea8e6d998c71638d5710623a6a03d9b2eeab091876a5. 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/USA560783574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9036b1cbd2ae20032c57079b107842065adf4503f7eb6b5497cb7affd34b21df. 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/USA560783576.