TRC, Trc, or TrC may refer to: Media and popular culture The Red Chord, an American music group The Rural Channel, a Canadian English language specialty channel TRC (band) a British hardcore pun
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 0x778df2316a1506d657997a6564df8e038f76d6d056f3d064d84b920e75a6a300. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/844dcac5-e062-4f5b-a732-98e861c18a83.json and https://artists.proofprofile.net/proofs/artist/844dcac5-e062-4f5b-a732-98e861c18a83.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 0x0e062010b52b31642a9abca34841fd865ff74b55a382bcf5bb3f1fc19a511310. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/ATR980016826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ab7decf01dd38eabd6c542c6c52bdcd7c46a5245b9cf70609f98eed5c020e7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBQLP1300534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7552b3be487a486c92b845e01df25b14a2d0ca2ab39e938626e040167689e5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCACQ1658977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1667393681503c943ab074edbc5fca7ebf94d8bf94b16c998380c9c0e2b37230. 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/GBLFP1700867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6775e3e2e78ae19c4a73050dc2b6d621adfb39d1a4de3776922ec0d6754405da. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/TCADQ1847595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1166d7b006d31261adfab5db7a10f04303fb4a3d1eb5c7218300c7e585db2cfd. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCADY1808016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78727fc8c14ddb1c3a326b2f77d744fa470e2a7d0e24973fffc4563f98e3243. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/TCADY1808031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa621997597ad613dc0678eae8a29743e1c13bb025db9ebfffaf0b31a85ce93d8. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TCADY1808034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d601ea989c669dc87d645e1424b8db6ba120abe095f7ac3ab53892e99e096c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TCADY1808048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4b35249b640389ab7022e5d90ae357aaa36c0346f038e45ad709f41df506a8. 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/QZFZ41939259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33ba3d5fe2c74e7f43a6a231936e47ce7f84a667cf1e8949ca92ba5994b3d3f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCAHH2379098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b268be7e70cd6d86fd9a2f29bd2d803967acdbd305cc394a90e5d868919d04. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAHH2379167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba4baf018440250ead1783782d5d0444e0c88dab172b04f174acb67a5c33619. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/TCAHH2379274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ff4d44e8f5f203f1fbf3b881da1446d0e98ab617740ac57bbde4c5728d5a5b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAJI2579878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05af581f1b3a470c212d97cbefbd60e4bdbf6946adc4f348743346272a22f38. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QMFME2537130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636c60efcdb3c24cecc6d181875b15df32832198cd5b1c1ebc4cdeeab0671f09. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMFME2537134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d10ad3088f6428f0e1ea142fe098753b75612f5e5a1577bd220832e02ce4858. 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/GX72H2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedd5f4a03ca166953a4f880d6d74d9c0720e4935b7b59a43b32fc50b860ba5f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBNK71500027.