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 0x8a3fb1a3399c5cfa3f67b73d61ab9032c89586f2c0dc431220beaaffecb8dcd5. 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/a97a172e-cdff-4d54-acbe-73538510fd2e.json and https://artists.proofprofile.net/proofs/artist/a97a172e-cdff-4d54-acbe-73538510fd2e.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 0x024e14f1ef70da59a0c6492824cb288e7db259b1e7c9ee827f0a38669a05d00f. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:04Z), 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/GBKQU2027162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36dcd2f173ac061dfc32589db988aae423b0b42c3165b3d2dcbed674592d3bb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX872133543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee9d5c216f046cf5cad5a7c2cd4435751f084fb53c2f3c1544957aa5f963700. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/FR2X42299967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb8fd4e9458ee8ef8ab0cb2bf0c64485c4457cb214fe3dc2beaad55d352e9c9. 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/FRX202253771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0a66c02a8ce8d74c22363c486f0f813e2dac844364f4ca70bcab5a82bb876a. 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/DGA072272590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af3a74fad598e4de7bf7d8a5050ceef8255526192653ae1b49b820142e6328b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR96X2344836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2ad325a8927d263922f2e67ba085b40af19aa334ec717f6d60fe680ac9b61b. 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/FRX452390985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b991d18da5fd57e6e7e48e2e624388f59c5f199e32e81a3c5b9491ddc90786. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:39:11Z), 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/DGA092366070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e72e93b9780b5a19c0de219944bf9d165ad5db54fe052988e8e0e9662896f6. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FRX282428219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0434c364eecbc55eb0acd2e29950638e22e9f47509238670eed05c3376e13062. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:39:13Z), 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/DGA092430776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435c4ebb014d49c903f350f2d232545b135faf3fc8c6977afe6299ea5ca05782. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA092471985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0ec87258c2fafd68ce8dc05858c0f6af4a85bf0e9254e59ad24272f3dc3dba. 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/DGA0L2427786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa20aba9ee32562b3fce03893d5e932ef099ebfb146de748727a6c51eca57c4. 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/FR10S2585157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7376fd0eb0d550db5963482caf23ba2ac73ee0f5aa38e8407e0eeccbf42c6b. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/FR96X2500376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794fe1c7db86745fdc6614e7025619ce2e138d49c1802010ce9efe3fdc79f0ae. 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/FR96X2500375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13aee972690ce93bed0d0f053dc72b51c41d6d13aafeff9ef09a9b7e87e73f50. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRX202539342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d73b900cd24b5df7dcd139c6498576ffeb0578e34e6c269aa0a0413d064c81. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX282597567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf608aa1b89bd0217b9771ca2485cae0fd167ab2b3acdb22067557eb47ac2ea. 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/FRX762534146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cf8cce0124227a191128c6fdc075f9559fdaf8599a23b4932fb076a0596f9e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/FRX872549906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18902ae5cb5b6199921d3c297187c1330d285f05e824ad13e187d6c585ee0bc4. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:09:56Z), 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/DGA052585287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a3970c01f45b72538892e556c829fce24376b7a63ebf12ba0d5a60a67e4f50. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DGA062526078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79983b98418a9332b0c7758c3fe01a305e3609f287985d5edf909e870e50a76. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:58:21Z), 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/DGA062536980.