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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dba8d0f22840223fe1f7184274b2fe0f8bcb92428ed860859c9ecf3b49b81f. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/003df449-ec45-42c7-bc1a-0244090f8528.json and https://artists.proofprofile.net/proofs/artist/003df449-ec45-42c7-bc1a-0244090f8528.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a9d862d96a4b25f6a6b0f651a76bcd26c652f6c046a1769a6ca036ae9a287c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCADZ1807106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09384dddbe49109fb0681fb838570af1d06fbbdb43bd8717e33b2f32a42b0ebb. 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/TCADZ1862526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b7de169fcea749f7a895b6d20fb43797de2711bd7fe3dc083fdb9a6820cf39. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZK6Q2190003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889749c9b87db5592588e914978a527bb91c88438ccea0cab3eae23584e83adc. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZMEP2166264.
Isaac Montijo En Vivo Desde La Ciudad De Mexico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae476f2605eae15c6f9b4b7e6903b257d3375575cf722f8d13f003065d76000. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZTB72252184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b6b6d3639bc8a01d37ea82f65c11acd5dd3d694cc2d7ebe5a8f903fbf1afd9. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZTB72252185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03990b0d3c7c45c9f8460d2dd5fabc8e3334257adb6187ed607f223939fe442c. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZTB72252186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a94d61a7de3faf3b09cd880d156d5a473a11f2d39eb19ffc64e4d764223eb7. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZTB72252187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa742b7e7410544fddede409451a7f456f32cfcfb50df94e3d3017cdb367b14e7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB72252188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4241ead601bbfa10a9386238fb092db53b3667f6d4ce85babfaf9850ca2fd26. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB72252189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abfd88ef09cfb1c828349361305b4324d23fd921ab417c11d1d35fe988f1172. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB72252190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbc38e820f2b2b231449e6493017b56225e863e40391362ec35fbb9db067164. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZTB72252191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7516fa13e955f21c2920155e0d184d9f5574df54d6ef9d53045aa5b5239f36a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB72252192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a52144bf5b7ce3de757f9252f7ead8a66332003396c33c4200074ed5e8cada9. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZTB72252193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bbcc06f0d1a095644b02351a558c6e7a0ed022739976e575fba7028961c36e. 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/QZDA52340007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a42e7de3fb6cc51f1297416f688d83367ba10ca33f4f212b4b4c0a01d2cbddc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWU2367642.