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 0x2b43948b5badb93d475e46e0340b5278e5003825751ed9ab2baf1466aa652612. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2468a1bd-a7af-4cd7-97d5-3eeefa29c239.json and https://artists.proofprofile.net/proofs/artist/2468a1bd-a7af-4cd7-97d5-3eeefa29c239.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mr.Trance (Soundtrack From The Animated Series)
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 0x1e8215632106fa401c33661ac225bacefa9ff916b6385cd8c6b4d7d9979c7622. 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/GBMJG2314573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af221df2d9979f215113ab83fadb2d2991aea6f6983977b75687da9c850c5af. 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/GBMJG2314574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c785fe45fe1efebcc6528f2cabed7564f6579fa86f795172054d1e5b1789ee4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBMJG2314575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4c8250f265009f559c08d92791244875d021b67b602ef802ff34df3bb4aad1. 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/GBMJG2314577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f200e98208a50d27b62b6f2b3e7f0f8a0b4fc397d473150463430e53f8427e1. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBMJG2314578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd652ef328ba6e63eaa90c6d0c191d6bff7120e654b52fb713279d8c5a001ba. 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/GBMJG2314579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31da78e8b93817b0f8ecf622c4832f0e7b3dc97577b099190fb099b3fcdd3bb4. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBMJG2314581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5872193c175f0075314630060cf23b0cfdb9c7fd89e48f593587e59135ac9719. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBMJG2314583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3140ef37c6053493c4a300a9436d43c78dbe8aef2318b9b7053b4df22ab11f5e. 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/GBMJG2314584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439d6574be3e5b8dcda0942de1a468d2386ae4296693b26efb5124fba5414417. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBMJG2314585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807450ccfca0b926922ce6332cd8204fa3172050569bd6d9871431ceaea9bb46. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBMJG2314586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155b3655e04896f6c3f8ca08b4fe45f90856f24e50307b3908689f7f23d5d37d. 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/GBMJG2314587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffae775ee793af73236201583fad636b694bd5a85ec433bc1aebd85ab243655. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBMJG2314588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de0058339d6102c0f1ad51ea48cef831bf55928b39d7568bdebc42424d48f61. 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/GBMJG2314589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500d265afb3de342372b58e4db88abd5d8c425e23da75da76b242fa0f85fc681. 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/GBMJG2314591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bcb5ad3b5962015e4998c5f309975f8a09a163f1bae76eb2fa300cf9a4f879. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBMJG2314592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee4c1dcc70ad949e2fa253a71b8464a842fb8dca74dd918184ff1856580975f. 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/GBMJG2314593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37584166b7004146d780dbc1a8cd9de536ef786e5dba556ed6e58730b4f2e493. 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/GBMJG2314594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689b037d53ca01501992f0c2ecdef0d15c80b078bbed138d8558a942ec7fedbc. 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/GBMJG2314595.