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 0x533f807234e5d47237ea62206c0d12f2d75fb5c7611b57c575e8e8620262a69e. 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/4a77de83-47e4-4be7-8077-55e64edc4f80.json and https://artists.proofprofile.net/proofs/artist/4a77de83-47e4-4be7-8077-55e64edc4f80.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 0xb3933d72c23b8282655f4d2f18adeae54abce1e1150128586da9961cd7117a9f. 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/QZ5FN2298719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde10fa7774eb908bc3d5481e45ae72253c02b7effe4fc5f80a2e06f0c6ff202. 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/QZ5FN2298721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b85a648faab946bb7130ec3fd2702f78ff724554ba10e210c83c3f6e3f365e. 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/QZ5FN2298762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7371dca6a71794e3773d6db498226c5a2391984e15f24de6fcd2cbe7c4b434de. 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/QZ5FN2298789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c6db0fad085bb7e37e2f1db9715021ee920052069d0bdcd93ecd1f1b3afd16. 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/QZ5FN2298820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6450d8030259a5002a8305d303784382aeb6919fe19a5e6afb90b71d226a8239. 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/QZ5FN2298822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06610627aa329cb5dbf6a7b9ce2715ee7201cff7e6ea8269a76d71117006aca0. 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/QZ5FN2298866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8af9901b2935726734f5cb0b25ae9c6ad80fd9fff8d275af588db3b802857c. 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/QZ5FN2298870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fc6ffebb043e88675d0123e3157b08425cdc4bc3f781e3144982bd71c484c9. 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/QZ5FN2298873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdbf5fe2ed552677fe5cc373903391d4b94ab25db46485540a6feece40046fb. 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/QZ5FN2298875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d5ca71bf27698ff5c38d366cf721435c5dcbbaf530718b3ac83c009e2e8296. 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/QZ5FN2298877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3567e26b9b1492c48c3f2a2816a2b2f7f4821e4949a97befee3974cf9151d726. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ5FN2298878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b30656e9fd8b3a36fdba8138188d0e15dc91ac362b28114a050da5d62f69cc. 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/QZ5FN2298880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853d6f4701e36dc61ec5debccbb8bbe164a04297cd86badd16524d3ba443190f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USJ3V0739213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1294ba7d5480f3b7fff705f05a9aa4459d29e33d7472b60d148742fd6a043eb2. 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/USJ3V0739218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf32302ad12dd0ace4e1feac109d9d31b27f0f47903cf8dd010339badd7867c8. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/USJ3V0739220.
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 0x95bb6a7342f1ff7cd3b3a29a139193487b317f07d59e6bda675a0b1149beec23. 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/ITZB42461773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e2f4ef374eb15133c89733800b66f31695c6b9ec689c71a7a96b302e1fb75f. 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/ITZB42461150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81b9390bfdf058b3b5eca06bcf58d82f30d61ecb9b3504c76b8c43496fe3380. 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/ITZB42460440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7d14144bf65804bd5151f261631f34807ccf5e8d8dedfab21ea12174445a2b. 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/QZ5FN2417549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2aa292db3bbd365c87e4b89baee25d42564b500ab7d2d6bc280a5ed9fb6488. 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/ITZB42358926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c739a7e190b047da757d47813b210afca4b8beae9b829fb114c30846f9b78d4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZWDD2257663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59ceec2cb0cf7c8400134a0e11afbdb85689690efef13b10bbc42315a9a9d95. 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/QZWDD2257328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e28fe44c263b685bc462739177111e559c8ec5748de15bf95ca2100fff7a15d. 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/QZWDD2257207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e160627e791e9a7cd49b8d9a5aeb89cf6eb764679f65cee287ceebfb688fea. 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/QZWDD2257022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cdd84833682b32f2c792915e2400f349f7fe14f8ff0ae8c3beee249bd4d6fa. 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/QZWDD2257032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f573e93bcb1b80eed0f43d36b615531f609ea24cf93a8e15f3ac36d5932c1fd. 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/ITZB42255747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df657af484adeb3527f159075109f7bacd2f094b0a56d95ab67a03b0cd8bdaa. 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/USLZJ2246179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06a8d7ecdee316c2ccdccc8813b65b20a212120d88bf87ed7b4c40c0782ff8c. 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/USLZJ2246209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6870c3c1c1ff29682bb32f18aa4cf3a044f7611d7193801950f51b5e97b7c302. 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/USLZJ2246137.
Do Now - Missy Jay & Puro Beat Cut Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc7d1da08cec2445daa52ed70e351f48dabdcfceb6403d06afd8ca404d09e97. 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/ITZB42249423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3186975ed1579b6d4fcba1c1c1fb5df9830458cc79350a57ef7cf581bd9d2a7. 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/ITZB42248408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f0fe2ba26e80c290a3e3ba438c0529d8e6f3bcec368d8accaf3b949d62be98. 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/ITZB42248409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a233f310dba1d156dc081fa80e3dac3ca308fb128de9bfa948f983f1607297d. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ITZB42248410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72ed4b17a9814199bd139244678390f2df4c0055b57f567a4e4232c2ee36aba. 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/ITZB42248416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b20144c1133f4658994743c54018ffc83fca3bcd2d126734c413cb9b7ed3ebe. 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/ITZB42248402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e8ff33f4612823337e4dfbc52994e47359eddc612d48ff8d9d9cf7fff31cd1. 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/ITZB42248356.