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 0xe132c405b9d59f8a6d608bc2210a9444ee5190a72c9597ba73fa00b272080cda. 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/c333fec0-e489-4b6f-8c90-37b17484c438.json and https://artists.proofprofile.net/proofs/artist/c333fec0-e489-4b6f-8c90-37b17484c438.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 0xa6ecd4f6cc1306d7df03314d0c5a92e74798e3bf8c08eb87e56ef3b724318426. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/EGA072000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66bf1c82c1ed9280647ee384a9c51c0e5d1c89514358a88213171ea11a87da4. 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/EGWKS2170401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2817ee4c00a4e90d8cbbea03e7389b4a34989bccb92dcd1b67cf5b3b67018b7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:37:57Z), 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/QM6MZ2205948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645dac80d39fe4d8f0936ac6d4ce61eee7495e50b24181a7eeea67a9affa1659. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:35:33Z), 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/FRX282214333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1849cc9d844407a3e0581e237c0d3794c193e1b03105bb79fc76233539bca68. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/FRX282214338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe575c074f926a5ee8ff2cfc153ecb6087b8e9ffb46c69a860647147b78ee165f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FRX452249434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7739ac0cef979e5363c647d0aec429ee8afbf21d7c1dea7efdba8698d68783f7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/EGWKS2289101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7739ac0cef979e5363c647d0aec429ee8afbf21d7c1dea7efdba8698d68783f7. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:10Z), 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/EGWKS2289101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb03d42c4377ec367ff1e7e79e02c7d61bfd10bc1ee3666873a52e76bad179f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:46:35Z), 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/QM4TW2381160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631f12116618175d883eab39c4a8f5c1ce524da872cdea51359f07afec537a8f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:47:40Z), 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/QM4TX2336950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b5ed032420231bd5f01e377e8134cab963d8a14c9f2ddf58370d389ec33c77. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:43:55Z), 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/EGWKS2333101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4b73ef3edb3238d74a550e889a6a93d1853cd4e170d53e7b074044aff08f72. 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/QMFME2365240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6887957f6529a9edcec607d9abd0e4bba659b395a4dc94517b3c02aa88b3b3c0. 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/AEA182400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7146b9a670db733f2ba2a57ddadc189eb963eef81409c28266ad1be2bf66e24b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:42Z), 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/AEA182400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9836f706eb1673628fc2c3adc57205d0b931af670e3761106247b040ac7dfbde. 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/AEA182400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061ccb653ded1786e30914e269a6184cd08b463dec7ac8c09066dcd713e042be. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/AEA182500118.