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 0xa814cd07be19ef566737cfbb2f25dbc443bab6442d0b7b46e0b1a87c598d55f8. 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/5c2d6d6c-24cf-446b-81dc-5a503c6b507a.json and https://artists.proofprofile.net/proofs/artist/5c2d6d6c-24cf-446b-81dc-5a503c6b507a.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 0xc127a3304f71172ed0c2b5194e5c9ab2f17563decc0979bb9b61923e77f714bd. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCADL1846883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439841918ddfc8ec7b8b5b01ecd40e34602563d5384c01128d5e28283efed3ba. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:03:55Z), 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/TCADQ1839308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34841a1255dbd9d193ad20ec13840c76eaed8ad127de133b445509d9d1525c1c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAED1937038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8fb810d8e51ff1500258ae92c0d7bbd09f26dccc20a52dce9be63c9834f237. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAED1937070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec47de89dc1dbcdc9becb7bef7f2b1b7a0056ae9b3630a27000933a31578a80. 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/TCAED1937107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1a5cec88d3d8242d9575c184959f8215c511c712344243b23c4cf0c5a9eb5c. 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/TCAED1937116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04911c9b701770b471a7124abcf03b98ab85c95a15d54bcf8891978055186a4f. 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/TCAEL1966736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2134f25a35ec13185d7a03f8ab57bc9e324a9983a138b1cf2029130965269b. 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/TCAEM1906770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc7832d1ffce00e9ada47b54abca61e1f7c6c6c79ae6fd6baa7d1890a93dc8d. 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/FR96X2008477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d45734ccfad8eab594e272b4610176b28494335a659bdc5432b578a286cd208. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FRX202092867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c25ed6fd64dfc9558c9dfe7f4dd45d0ce59b520819a6f0cf7c2061d37803f81. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX872044222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf428702f6fa224495e952cbb416a8a90a995c81aabdeea3962e18a8ed15bcbdc. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX282171224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe75ba9094b191693a6e6395aa7992ae26c28352c1869d482ca0a573304f2c83. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:07:36Z), 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/FR10S2260902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144529e38f1d0fa61dcbbfeb92858a5b46be8cb89a7844b735b7114d0d916273. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FR96X2248031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b42c1a488d42baf64f5f530904829d91104be3124d4538bdbd24bc76c9c6940. 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/FRX452236175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9a826f2c99e2961e730bdc4ddf0398766c24d464487d6211d00862257f30e4. 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/DGA052240552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8848901f29692cbf5c087c3fb87568590e8edacf8a948829d9ac6e2b9a573ae9. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:50:20Z), 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/FR10S2397605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c252c0f8f8791ce01da3699f5a121cb4c5aab4567d3b02319d4aab3fb6bfce. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA0L2378376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45104e8ae0fa64d2f887fed23bbbc2e0f151f59b0b6bd5662e97a7ad1475d77c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DGA0L2378380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84189df6d060dc3943db328d5939385e3abafed5661d2b4b23dc699b9cf557fc. 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/DGA0L2378382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffaf42a7ab05d93abbabdb7ffcbc476585b9b789cb9cf3f9b21d7fcaa512303. 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/DGA0L2378383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7c4ba8c67f95ffa0b29e62906a6943899ecf1d51c14c2879a597a2f9b376fa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DGA0L2378384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144529e38f1d0fa61dcbbfeb92858a5b46be8cb89a7844b735b7114d0d916273. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR96X2248031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de1ed6485634d76af87efd8c0f2a4a8932149821474761936c775c806747e0d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6Q2523102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64b579b5bdecc040561764bde5c5ba8346d6ec0b7e0268f3e3e66039e28338b. 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/FR9JL2200150.