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 0x822e3ea8a6d03e18aa0703e093b4b5d8a76bb9000bb6312a6a6962da5a77627d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d0ee981f-614e-4ab7-b05c-5d84f6519e29.json and https://artists.proofprofile.net/proofs/artist/d0ee981f-614e-4ab7-b05c-5d84f6519e29.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 0x9fbd182d74656a9196ac44c930a72773bc540f996c77173893959d26dc191852. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/AEA2M2168031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d2a73ba88b058f30cf23baa91b22bef3a434041d432935d96a8cba16e7468e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:51:33Z), 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/AEA2M2167933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c200d51eb5ef5b5e3ae302451f4452fc466e1f38d40ce867f1f1c572efb960. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:22:50Z), 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/AEA2M2166833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9051b2e74c79e45d6c28c13cca8e81fa70f511d5c60598c6ef02b3140be4d5ec. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/AEA2M2166834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f24a9ad6f40d5bf884fce2c2052c9423863c4b07fc627467b74edcacc9a46da. 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/AEA2M2166840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdde1665d150ea43e4f7cb93b92e90fca77afc153e34206b33ef1a99adccdfd. 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/AEA2M2318510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aca543d76af88d3f6b1df2c45f1f27914bb5b9f51e06ffcf1564a2868d6541b. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/AEA2M2332265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9a9382f9d9b49bd39ce2d73f46a66db0bdccda61f5acca616b7f2f306326dd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:52:29Z), 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/AEA2M2350606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99489ae88e0b25d4baaec3118c37b7456e2db4a5a0b5f4ac55e8192c3dfdb582. 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/AEA2M2366303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285db37a4306c718d61a3057d3e7792f5bca880ab2fb73fab7b0b3e65d0e140c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/AEA2L2360664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f45ec42ab852e531f4ac60e64d68819a4ed6b7a8691a456fdffd9d39d73c6d. 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/AEA2L2372240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3923dcfc6a5433739435467dbfdfbca7f40092dd4f1b9f8f9ae0f217b5e02f3. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/AEA0Q2393773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ccb4992f0c9260de9b9c73c6e9f3c779f764ad0cdef91c47abb5a9eeda9e67. 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/AEA0Q2470232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cacb1b463cf9957c8e0b64026fbda2cf4e170e667eaa1e417bb9e66531519f3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:39Z), 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/AEA0Q2470234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec4082392cfaaaf75041a8356069e393ea2536a3b0ea75dd863d643efba3764. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/AEA2W2510455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085adf22d8a9ca2076ba599694c676265d761c56b778197cb68efc24d018fd0e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/AEA2W2531187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2860b29273891efcae9a0265c0ee7345ccee4b1158b947f476f3f19f4ea47e8. 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/AEA2M2517379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ff369f0d7448adbdd47faa4531ee61e6ec6da377e789e12877697ee3baecd7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/AEA2M2517881.