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 0xd02d379cfc7c16b860bba43b48846bab0eef522bd8509672798f99f597959f56. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da789fc9-2cc2-4c9b-af23-95a43b431526.json and https://artists.proofprofile.net/proofs/artist/da789fc9-2cc2-4c9b-af23-95a43b431526.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 0x0910042daa4ad512bba1d1df19f339388c3036e51856eed2a5c12f6fa57a8851. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/USA2P2229888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38c8dbdfc23608f758f3c8c7b1b3eda1c1642e2417274c95bde9d12a15a7475. 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/NL4NL2153005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3d2be56d33433316926c094f3dbce032384ec2bdd5bc9d981fe407949c4909. 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/NL4NL2153006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8215bf0e072e3d4b1e51cb7844ff7f52c645f6bd1f153ece71de8df77d27d4a9. 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/NL4NL2153007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3042f67aa1dccdc6e5afa64b3a3e23c0ec825caff43d4ffbe1afcfa5dca6b0. 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/NL4NL2153009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9424eb366bc22dd4a50eeb20d5a8e89ce09af5fed23960695486c6182c9d5d6. 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/NL4NL2153011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3250b6fa9efa70c55cdb8b51af8c436e08d71846776b6a889c7b9d51739f96c8. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T09:53:48Z), 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/NL4NL2153015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41f099f1bd8021295bfb654573dae98f25d180a716196c596093b2915861e97. 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/NL4NL2153016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa166160ef6b7f22b99d373672ad368b17b3be74101f7e46c17fe149b84953c1e. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/NL4NL2153008.
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 0x4908997060948cd24136ea652099abe2938b054fe8f90fd3d285a1600e7690cb. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NL4NL2153010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c17cdf16204a6f0d8c6a59b150ece6107b147631b11ee6f377b1125596df9b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NL4NL2153012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133e3cebae25ed2dd0d2c9eef4f4f047073b5fcd83c069e84f6e3ac39fdb2b12. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NL4NL2153013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cea7e6b80ac006a1dc250a32292eac14c634a8b891cd27b11860bc930bb79c9. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/NL4NL2153014.
Say You Never Loved Me (Live at Abbey Road)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28e068db65e332d04bf65b6a467c318e793ea3eaf33a5fad5edd79c27f3849f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/IL6652411751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572edfe7fa1cd8eb69d8e4fb13fa5eba0b1196ca238bbb89b4d7e5e95848786d. 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/SE6QE2414843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175ceafc84d5cd7f37648cbe00741f2c8838e20ec5eae108f0d5b9ed08b63e32. 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/QZNJY2437480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0bb273f29641836c24ca4e2530bbc61b38bb260a7b23f8dd5b03d62c4c88ad. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/NL1AP2087019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ada332ca0b6bd505cca31ddf315fed2bbfa699457260ba6536d4a3fb3508d67. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/SE6HN2418535.