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 0xfb8c4f09cca8086fa38e1fa2972311c37c1fd05afbe248b7d24279597a72e3c2. 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/27b41d4e-87e0-42bb-b0f3-a86de736ed2a.json and https://artists.proofprofile.net/proofs/artist/27b41d4e-87e0-42bb-b0f3-a86de736ed2a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Maria Gasolina (feat. astrobeattzz & Yung Drum)
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 0xb814ac05ca0a922530f8fa2025284156f9d9bd7c66a2c8890ae708dcd4baf783. 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/BC2GV2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61892daddfd549a6b7458ccd7bb47151d1dca6f80b7cd473f24be88f5f36fce. 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/BRGRA2110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3789d3d96ff6f3f2947dedf7da531be461990cfe6eefa7652db973206ed66fa8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRGRA2110002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f613edf839b3cffce8d5b88d25ee90419ab10779c2a1888bfec0becd5c4c9d1. 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/BRGRA2110003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30da2da97f693479517def9da200e9aa598901f27c709f1c84aefdff9033fbae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRGRA2110004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe310a40a2885aa7c1621ee6dec6a1c6d2ff42e032974b8fe4a34881b02c396. 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/BC2GV2100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72442fdb1fd80720dc903822bf500dc4b1ba0339533b67538699b22ce81f85a2. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/BC2GV2100008.
Amigo Talarico (feat. Yung Drum & astrobeattzz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d8509920f44fcd1489e92705b53b03ba26ad395a2cca81a927c098b3f1e027. 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/BC2GV2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa995410eb625fd64156672c8dd01221b09a4ce10c6de0b88a127af9bbaaca564. 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/BC2GV2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc75101af88ea630b4067bff1af79df3f70ab4ec36815c2ce32ed9ae111aef7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6HN2182035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eb4d5ab1e90acb5c84c1a2e0af72d446f07cf23ee70fdde130cb30363fb503. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6A92100243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89292110fff16f3a32a17978ab7a1a5ea2de8c495af372b826290bdcd5ae40b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5752102975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4f03584e6048f27105e5e82c2b308c3a185f3c3339cb63fb30ea630d662496. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/BCBA42300010.
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