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 0x71fbfb8ca96ec29377515c724fb1b8d5b1f584daf974b400451428bb121875c9. 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/d2c463cc-dde0-41b6-b215-642ea6f5a3d7.json and https://artists.proofprofile.net/proofs/artist/d2c463cc-dde0-41b6-b215-642ea6f5a3d7.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 0x975bc31fc9493170a9fa20fd70a7acef88417f5eed8d2ddadceb7e13e3e1ded3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6F2103175.
from the shallow outside rivers in the valley of blood, we seek our prey in the midst of the night, for our fervor is unmatched
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6941fca08028ff5b6ac1ee44b0e0aa385e4431108753fe81440a54da65359d80. 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/QZMEQ2113555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6de24ee7781c7809431d5923580e59c13932c2976a59bdffb1bcac15d6854b9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:58:07Z), 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/QZMEQ2113559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8002ca207e6009c460966b4ed18f9289b5f5c09c86e64073845fe5d0ab38b8. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:55Z), 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/QZMEQ2113560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4803bbb46f781563b963034963cbe8cce7728eefda302e123a0d57df82172f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZMEQ2113562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e6ce272df1d45dac026d1fc3c62a87b7a30f014fac366b2b6cb040c410448a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZMEQ2113563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe929d7effd2fdc86c4423e8c7a8b736fee104ce621cb2dd5368d40f958b13130. 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/QZMEQ2113564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfd3d82a1a456b11298efcb032a7a36f23374738e2178e7149d82faf5199b10. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZK6H2151839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab02272e06435d17cfc6b0b738672bc21ce91b0e2209b75951c7d0798c69a83. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZMEQ2113566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a802b78876245b1e8b45d4fbd600e148f955724935a1225defc2f68a3c97152. 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/QZTB22267686.
watching the northern lights on my phone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9db07e057e3ffbada27d89037578c1dd276fb83f340210b33192ba3d83b3e19. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZRP42335421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd46c32ee16295fce6eabda7a853eabc52b720348574c3d01b522c64dbcd1d6. 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/QZTAS2348555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4420166b655f3bee76539dd075730e5daea5c7a38626c8a6323017bcf466e7d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTAS2348556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305fed04de8c48a2e2639e6f03f58d9a4ee2488c3ec563009a52ab57ecbaf173. 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/QZPEW2476319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356cb91f79c963c1bb069e57d0ae32a990d0af9cee56c7c5a59503ed888eba8a. 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/QZNWW2421979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f928c76078e663c38194e9c5847cbd888fcab4473fa291bb90a69cd105cfa52. 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/QZNWW2421980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fecac9b2ac5b903d6fceea79d3775d5bed6cbeb0fcf28eecd810bb56bac133e. 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/QZNWW2421981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2037fd5e6da9598ed7a04070e56cb945185f461f6cc4aacc62f2b996593da7. 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/QZNWW2421982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb7f336c9fd338ee5bf61ce2ac6a358483ac7130d3bb34f21aefe445ec181dd. 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/QZNWW2421983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e46b3be83abaa568ebb2a54ecc0881eb2b6ee158eaaead6b8710db8aa15b882. 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/QZNWW2421985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc69906fc89d7dee8e413fc476a8bedf3433fc4fe454345626292578cffcf317. 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/QZNWW2421986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e9618b633243d06d17d306656083a02282b49565b0d66365dc4fbcd8447802. 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/QZNWW2421987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb16abb62fdb54521886844496de87e47b0f7c9b9933fa3167466ed8b9d8f284. 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/QZNWW2421988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4db9f1b71831a196a59517c12d6f4aef05de3ba0cc8f2d0f88af69c841d0733. 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/QZNWW2421989.
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