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 0xe226aefbec8fee7fb65a467a88cd402f310184a1f9e7abc859fb64ded71ca438. 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/83edfa84-c8d1-4661-b21f-e67a5a6bc1d4.json and https://artists.proofprofile.net/proofs/artist/83edfa84-c8d1-4661-b21f-e67a5a6bc1d4.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 0xbba56992c8db34baf0772c3da602e5b6e18c59d0ac0b786c86fdb473fb763875. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX452355997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371374b08dd8de36237947fef9986586b915462ddf4d6d30e8323d4d0a2f44c3. 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/DGA052350454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371374b08dd8de36237947fef9986586b915462ddf4d6d30e8323d4d0a2f44c3. 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/DGA052350454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ac2493edbddebac7da7fc410e1ed1d557291b9ba6a4276b118f988ba718c99. 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/DGA0M2471814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66dc2cb1e43003794e15656b6f7e0fd6f4c1cd64f22cce4d751d3a5c3281978. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:10:40Z), 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/DGA0M2471816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c9e6b95227e88f1fc38620a698ffd3301e4e13ee10639ac3971f3dd943ebab. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DGA0M2471817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc736bedaa01e8745bcf298821cc0099ee003096dd17ab1c83f852cc3b3a67647. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/DGA0M2471818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de278b09dc9485c725698ab51637c3b70d6810750084b04aa2bda98155363ff. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA0M2471819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c92946096c45ae672e1976e45f0a114e8214b2013a5b73bfa42b381e10bcfb. 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/DGA0M2471820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd1f13ff999830c20cec4aaf7f5910fb3a3d78cd4e8698df407c4dd0b18bacc. 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/DGA092449539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11b68c3ac0bf5838ccd6359f202f732963632847c2c791da3b8903245dbd31c. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/DGA0M2471822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3f41920a5da15d586ca76acd008b37d279f388eaf1c190264597714fdd161f. 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/DGA0M2471823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b0f6a55e736e838d355adf5395a849f5dba42b18fd166a3f3c005dbab03815. 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/DGA0M2471825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1370b548642bc7ac6dda08d999ff7e5c288334827fbe4be57aa1a41423bd75b. 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/DGA0M2437651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cb49f510b01a94d24bc85050a770881755c38839df3e6d263bae678b2cd911. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/DGA0M2471826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54b25b7e7bcc0d5e75da4f637883fc2d4933413e589e7a2bb92f920b3c9d5b6. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:27:48Z), 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/FRX282514040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9920f87e897a132deb97d847937b05627f9dd176f75406e834ab74278a1420. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX872503879.