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 0x767668b964f487c04b43fb3dd3b63832778289921bfdbfc6014c81ccb4ae744d. 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/ae401e6d-70ac-403d-a585-4f4b92db2576.json and https://artists.proofprofile.net/proofs/artist/ae401e6d-70ac-403d-a585-4f4b92db2576.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 0xb1b6bd7e4707ad9f61da73ac37350a4e74365eb1e02cbc0797424ec62e428534. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/EGA272000768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc20800f8a1cffb2f664b26355d08e53e2bd52af60f5e41fabfc4c29a24b949. 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/EGA272000769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6297bb6a721edb3b19ce3389cb3b3e3cf313febd10923efa882200fafd2f8f93. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/EGA272000771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fb318ef2fc6cd89f7483ef417856ccca0310f26880472599ee641f6cf26dab. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/EGA272000781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a3494c4da343a57a8ae3bdfc617daa33ed61d6cd2a282f5f4c2caa26bb6a72. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/EGA272000780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6269a5f85b74c79223fa1e0f94403eaf31b7fd4c999ee21b5bcbddab5efeae66. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:41:03Z), 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/EGA272000784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2484b5c1c707ad0251bddc899d66f109929138850b7570170c3989626f5afb15. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/EGA272000773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb00cf7fe190bff304d6288a501d412a0bd8f9104c95025bf6cde1dceb25aa7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/EGA1K1839729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a08a38cc3c92d667f5bc60726697c3d4033532f94eaef7105fc5b1c6dff386. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:41:19Z), 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/EGA272000830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d3d3a074c62f522e31d67cd3109e8e005ea2eb74e02ced348c41fe7e73607a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/EGA272000892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d4288f8888abe1c6fff1926c9501ba85c0e746fee245094ed5809265a00a94. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/EGA272000817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6adeb22e99e9d66af5fe78686dd9b815ab1e80b374a1fc2efcb3b5fb4c6557d. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:33:51Z), 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/EGA272000893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813890e4cee8c50627957cc54fc9685240695693336c1fb6b6ade6dc356e8664. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/EGA272000864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2513df6d2b4af08ccef4a2c8c8f34c7e5cc9892b97d84d2caaa4bb3e1f460d0c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/EGA272000890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b5f560849194d007ca04ba088ee6668184f83c14fc5de0ea96adc08c688c65. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/EGA272000819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a300242a238cf855bc91df9e5a9a786884552c1795abcd76ceb7098a96ba198. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/EGA272000879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cad8b09b660283d1ba8c978ac2dbcdbd5148a1243dbbcbfd9986e248b971b4. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:07:13Z), 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/EGA272000833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97d71231194e34dfbc770533e26c4796024d759fc3c9c50b5bcf48f45381780. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/EGA010545726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26158056a41183dd72317ef0a0056d31240e420cbc4698554de80c43f360c455. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/EGA272000906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee58fcd0d824cc35c6a720eb897448394ba13b017c72289ea725c097788ae1b3. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:14:38Z), 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/EGA272000836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23ed329ef9c84eb8c31abdb8a45ed3bcb95a1906945771def1f93fe7794e360. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/EGA272000900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb490deeed0e4f6191ce2ff1cbdc5b55ec3a1fdb80036f7625dc8bf763c3ada4a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:50:19Z), 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/EGA272000866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfa4da77584bd2f53cf0933cf2b61d90ecb12c243ecc18c1fc6279c7ed35243. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FRX872442042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da52f2653b51a2e140ae205e9ad48e847a468fe16eee28f0eccf5e26e59fe9e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX872494973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7f334743bf1e1446e0e1b2cc780d9ea08197971cd224923df5a1afde52fa40. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DGA082482048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa269ac2bd0cbca199cfc9376a8abf01abb1e1d116bc2ac09c1673621bbccae6e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR96X2554429.