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 0x7f866e316fd574deafefbdb16c86ec324954c6b143b45ac0f23a672d831ff91d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/406d0f8e-cc8c-438d-b175-79743d09449b.json and https://artists.proofprofile.net/proofs/artist/406d0f8e-cc8c-438d-b175-79743d09449b.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 0x62a93d7c8abc1246e1bf09f843c211299b03e60ed7c3ac2fbd7b547d5c07fcc1. 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/AUWA02201679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da01c7da3582ae1eac851314bd648cb66649f10562aa313a347b89974eab4ab. 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/AUWA02201248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1e7a5dc7302023fff46d66ed6d5d9cada8bfc393cfdc7553965c9b251ea515. 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/AUWA02200778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41555c5a012c031e6fc6ac22d4843d1b8c46a181a2af7600b920ef413f8bb630. 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/AUWA02200966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3faceecff6df09f49cc2b7ca0f894407a45b8b829a5075651e5db2810533ea8. 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/AUWA02200967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1e7a5dc7302023fff46d66ed6d5d9cada8bfc393cfdc7553965c9b251ea515. 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/AUWA02200778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1e7a5dc7302023fff46d66ed6d5d9cada8bfc393cfdc7553965c9b251ea515. 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/AUWA02200778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5750608357d876c7c4e686cfd49d6404bb8d4f01875ea309156caf476e227322. 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/AUWA01800314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416fb1d6084b0f886bf899e5b3779977c3cded40dda730f58568fadafead67f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DES232300470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fa86f3ab389adc48fbb125c88a348e65e1a4654d1839cb65be227a401ae9af. 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/DES232300471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe465470a93fe3417e372925c5907d9a13fb5fa6b5dc05025eb9bb80403cad064. 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/AUMSZ2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f03d203418ca735b7938813a30141a7731b7bbcc38d4112d3047c3df6c2b66. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/AUC1K2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ebcc34250476319af416a29df03827531a896a1768779ab06a41b159c42196. 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/AUNV02300168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2336f516dd2689da8676230a8c17e460fb300d8782b6e7b5fc2c98fd1219061. 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/AUC1K2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0117f91b500503a293d28b67b8a86e1549ca457d59a25ff7348f937f359f4de. 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/AUVC02035611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69be312d36ac1b31ac7ad3b4006f835be4bc77f92b4489e80695896c75f17fb8. 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/DEWO71700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfa43b522b6834cd1df07f8f5567aa1b38570003e20d5ae9c9c2522d8562702. 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/AUVAE1700071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fd47c9848ed954c2ca1d0071a15e58f8bf7d4920111f9804bc0d22660e8fe2. 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/AUOKE1700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f5aea5bdf618a61c33e7ec01dff7b83af6d478327b0838c969c3b925ff5195. 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/USDM31792901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c915362c3e4d089ee947d26b27fb2ec38e57767e22c63fd172649cca40443a1. 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/CA5KR2460634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a93d7c8abc1246e1bf09f843c211299b03e60ed7c3ac2fbd7b547d5c07fcc1. 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/AUWA02201679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b08749c29e60193c4a16db8466f84d55eac56238be42b66a331bfbe984c24b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/AUWA02300679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5750608357d876c7c4e686cfd49d6404bb8d4f01875ea309156caf476e227322. 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/AUWA01800314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ed19264f17dfc7755040a94d94f09d0d0f39ff7b30031412de10725f0476b7. 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/AUWA02400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfbdbdb0dfe20c769db0a0cfe91e3cae490bb63248b7d964ca2b8391663053d. 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/AUWA02400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a93d7c8abc1246e1bf09f843c211299b03e60ed7c3ac2fbd7b547d5c07fcc1. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/AUWA02201679.