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 0xfda809183851104e88ae432947c8bfb52bf10ed70cfef9ab12c89435de9133f0. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de62a1f6-0944-44bf-9f9d-043db155cf0e.json and https://artists.proofprofile.net/proofs/artist/de62a1f6-0944-44bf-9f9d-043db155cf0e.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 0x6851bfe43662a04fca535df7887a65a376ca30863257c5bfedbbc3f8bdb75a9d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6J2477870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711b8587632bc2ef01fae76f7aeff17dde1e0579f4531f356345dbc42e9bcb0c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6J2477871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95614ea19ffeecc747d43ddb6abfae9e95532ecc1dd4441883ff90897e2b76b7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZK6J2477872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5b5c99aaea5e112f2dc536258faaa50c29f2e77f15102728efbed6d66b3045. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6J2477873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89d2aef48d90b6c0a347e52f0db0bacce89542816359f350952bef343cf9a60. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6J2477874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0006864ec10f068095542b2180874e55d77ca760ed99feea62c91b13e851879a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ32198518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7036765e65eeaa094371212f4160c1d37f061f6f1c6edce783cdc3324619d5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ32198520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9633d268902c22c046cc08d390fcee68d8c1f0b975acd65eff12286995fbe681. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGWX2116381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ae57325824aa8adac21ec78bb1bf3ff8e31f7d7459c9dd8e2b982c477c4623. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZGWX2116382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27455e9b6a42f57ef0f3504ce70719b70beffc95a89af8c5ab5625ba94c9c89b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGWX2116383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ad9e0fc8786808f6197f99ee361a8a7744ce7c7a0f09e3148247f9512fedcc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGWX2116384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d911035a7317920c7d28f466e1c365470489a959acdfbc31a3b874dcaf4e9a. 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/QZGWX2116385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc967773706a35253dc0a981b317ac0bc884bf039e3d1411d594d00dd1b29e408. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZGWX2116388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca9370b8163a9a0cbfaae583c1c57725274ce7d2bfb51d1033d1afe80bae5b4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZGWX2116389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691981cb715adb0c69a71f2a05b7a1ce0d5fa40dd7c74580526762002f3fddc3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGWX2116392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c28b9263c48ca19a14936f46bc46e2e5a71477bd33d197a3219eb194eb474b1. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZGWX2116395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b22b86186aa889384801aa72a46239e00b45f6bc6fa57ff38724611f738c029. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGWX2116396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc195e1acfead9d7168b4932db58387313652530e015b48caefaf4076b0021458. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZGWX2116397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97c739395040425c44d6bfa49d3a4c2f001f24f359a7399eed246efd20e1cc7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZGWX2116398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4571927e6541367f6d4a9a5b19959d8e30c4754a454a7a3ae76560026af28b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGWX2116400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41cdaa51bd2e6c2bb1497bef0b90e45ddf77f7cec106e74a6bec635c7da3fd0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGWX2116402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf772e01dfe76e9c250c3efcae9b47dd8b2d3020e9fc9689bbedc2a15c2adcd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZGWX2116403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a3dc4d768c7db16d80c4402b2f3c531252f4eb09095d4cd99561757ca9d0a2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZGWX2116404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28585fd2ad6b0f13263bac3ffca6088e4c4e158b346fc7e5c18f07434e854a7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZGWX2116406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e9569afeac27f020e771ef409316b19b1b86a76a1466fc305ec2bfc516cac2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGWX2116407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bdc3a04187a4f9d5753f9cdeb9949c15855b37b061b4af5a4fcac59f7b65c2. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZGWX2116409.