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 0x20ce9b67c70eb46051f95b493cfdc9747b836a4f3b483aca2999e6f43884ba0a. 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/f71cc88e-9daa-49d9-aa29-e7dc0659b5e3.json and https://artists.proofprofile.net/proofs/artist/f71cc88e-9daa-49d9-aa29-e7dc0659b5e3.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 0x1a64a47b9e89cdb10fbec527edf2c6f09486037865cde6962f29e0d87d368493. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/CAR071600088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c65d65ed1c3d3e9b2c0acd9de9ce309189aec29e8ddeacbbbafe193ecbd6b20. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USUM71700971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20026f675494b664db3c4bba451f6f7a2f0117d136d760c0fbaefaa81f56fe94. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USUM71704488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68461b3e75c4a5702ed5d77daa2c40c7a4845cd571b670ab29575b3d334036f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USUM71616433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6f63785d952339b47ea36452eca6004d92165360be87fc586535af2210ae5c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USUM71704575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c81e06e89fd196aed4b6e5766bce6980e3bb7f13cfcde1e37a886dfe6823819. 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/USUM71708198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe725380851f7440702edab449a294a89095f65ddd0a8d17137cb4a2abcc94bb3. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/USDM31800901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a666bb04ce965630fb38399bca5c96cdf4677cb2e8d5bd4f82b35400c0469d. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:59:50Z), 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/USDM31801301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f788b3900309efb1fe33108871713fe75b31cb7f636d81e617de996560bb58. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USDM31806901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea4d5e57896b76804c8ee06c8484e3c6c46178b898a6e004d26cbc4883d2704. 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/USDM31918502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04a84dffcbee7d630168093e7e2cd2b4e84e0d5465a4e1c179dce8b8bce9049. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:20:59Z), 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/QZNWZ2024626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49ba019e8bbe05906f2c4700cfa0b458c6cf4f95d7e658162577fd848e69603. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBKPL2150918.
Cold Comfort (feat. Andrew Paley) [Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9f2ac4c05ca626470c41856201ce7a2fa0a7a3a47ba9fd58c1105baea3bffc. 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/USA2P1836877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca697bdccf91eb1a1e0e2d954366bcfc7d6e9ce4a4c9ce9b6aac817079061dc. 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/USA2P1842402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7afc3916e42200d8f9ca36cdd9b1aa37b2bdde5e160ef97d4df1c9bd96d999a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZGLS2298274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadab2564d2d970c1284f02c630551c631ffbd84f6b1b1308b6e23266f1a24de9. 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/QM24S1700526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a03886f5dca3d50d0fd44aff9ccf0d6a4d8678da3f20a4b0cc079d5bfdb4d6. 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/USDM31800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eeb731113c3c01f493268fc43fab768c797e19fa6a13db6bdbac98c644c7ee1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AUNV01500462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2293f17b81e4da5c246b2bfefe4aace4ceb8852d4c0d47a98483604c55b6127. 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/USUM71711043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2293f17b81e4da5c246b2bfefe4aace4ceb8852d4c0d47a98483604c55b6127. 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/USUM71711043.