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 0x9000763cf8ffc25337f82a7a61aea6fa82aff24ff8ff21ec98cd533f3ac9c84e. 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/2093d52e-d8b5-47af-8fa5-6155acc51f35.json and https://artists.proofprofile.net/proofs/artist/2093d52e-d8b5-47af-8fa5-6155acc51f35.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 0x461d9554e55e0172220d44127ace6d58172f242bb921b9e4a35d5fdd36f49ad2. 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/UYM122400882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82794f9419347b4ec768f9da94845cc85fb01a0641b226c5e29275cc59384727. 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/QZW9K2399849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc59369d733b3a60ce470d56a10d895606191cee86d0cdb6446ee8d78dccd87. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZW9K2399850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a3a4327ebc2b23e08674c9fb04d01d8cb990c59216864cd3272171e245e8d4. 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/QZW9K2399853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741fec611f04d4f55caa117e78176ae25b5e096f614093d5f7c4b16b4678668c. 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/QZW9K2399864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea58176dfaefac2416e669cc02d1ae3be62fb8c2971261150df930ca66073521. 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/QZW9K2399873.
Sin Robar, Sin Copiar, Sin Fingir, Sin Mentir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a619b9e401727766535554d459334977dbf75b20f49a0951b000a6e8156735. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZW9K2399851.
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 0x63cfde97bc27ac43da88fba653cc55d74c2935a088425bd0cc80c144c55d20b8. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZW9K2399870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84264fc260bffbe2b8ede0c25feb73305c1e3b7af16e8915ed2e5726f2a42365. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZW9K2399871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175be0fc8e50795bdfed37b89226af2e0c722f4105b0dcf565983f2e59706549. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QZW9K2399872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183a072bb560a22caca6b36c89c86460e7ffc446a0ef772f299bc146354cf136. 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/UYM121002025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0d55b98bc22e60d3623e29f2e08c8f55af17c5a89e43a7052771bfc164bdca. 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/UYM121002026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e36e29e0646977a5aafbf2d5ffc26d98dfac4f572a876280b49337e46c14af1. 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/UYM121002027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9ccc7525b4dcf5c2997813dceb8661d712b3ebf041dcd5681f39dc73f39383. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/UYM121002028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77ee698d99a01ac3bc26aa96195ff5f043ab3057bdded164d1d20faf075ea0e. 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/UYM121002029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa134d6afc5f359a74cc987c30d557a2db907be6e62fe68037a4cca2b13e55fb9. 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/UYM121002030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef49f5b17aa0c9029040937117d8c8c71fdb622d33b2f8946fe4983b81a3aabd. 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/UYM121002031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc5d1ed232d48491c8df39eafd0127c0353d8d4decf01446f0a6f6f10bf9153. 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/UYM121002033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882aab69408925ee33faddf1bc6baabe9624df7343ba5c5bd21a6189dbf00f92. 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/UYM121002034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76819bc7de4e3c312b191f7f1d474983725e0d2dec4661c0f959b4e385adf925. 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/UYM121002035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15f92b0f081f18c7cc9f34b93960b811a913aaa4c38646fde144136748d9dff. 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/UYM121002036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e648fdc7c8e890da74be6382c16f20607616ff31179cf140b019f0c21e2936. 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/UYM121002037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f9107685d8d4a99b7b7cf53d9d12625ed427169d8707b9a154d496c436e689. 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/UYM121002038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba6c0e1218b8a1a0c25eb28e7918967deceebc7182d396407bcac74751e99cb. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/UYM121002032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788888f837062b8dcbdf046519a5c747a27ea015fb2723fd95c74103a139d783. 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/UYM122400631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb541f37cba88a0717b7703446bc938b6b097cdb9de493ebac462ca0fccfc1d. 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/UYM123001536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0815f911d631d8884baf67a92bed93652d10795e0061f57c5c9ff1a66fc5daf. 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/UYM123000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73280c8854bfd086f6c7760daf376d9f95123d14791ad201a80dd7d82d12ab29. 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/UYM123002133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdd7a13c9ce0bdb2f39a76e9aeb151ac9a5366246f1ee39e2cac15debb5f501. 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/UYM123000019.