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 0x4a786a4fd68bc98ce112a7e9637605c37e592ba9917ce14a3cddd3619a704882. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/732a4708-cc22-4d48-b482-d238e80ca614.json and https://artists.proofprofile.net/proofs/artist/732a4708-cc22-4d48-b482-d238e80ca614.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 0xd837d367ac6a75d7570edaadf7c0d96a646752d84ced9b39d8c7d0b85fbf51cb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBLFP2565849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b043660007286a8f3f24447e675b52c8a5f2c53879f0f53ac1e075b1465796d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBLFP2565637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1237cac25df6a36cd7410f4116590989901d1d23bab88aa575023ed416dc51b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBLFP2566017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597bc2fd394b52a395a894db92f9890624310e60b4be44d4c34c8535c8bb1483. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBLFP2565620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7d71d0d05bf010cc43b0f3b132d52a3045e05b77aa4c120214fc40763c361b. 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/GBLFP2566000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ab96e7ed9fc5847ef2e889d4eba1bfa3300c019ae1d62ded62d828060f6ad4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBLFP2566176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f07f2f8757e5b34515c5cb6942a4fe3eb32f1e78179a5ef854e5dfca96affc. 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/GBLFP2566174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e263866677b68a680f5dffc2f4fe6846af7b796918a148d7696f1e79df589c7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBLFP2566021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449e4e68fd05d55e2ae50a54987a122f1a4f99e1152856d76b24a67bc3822531. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GBLFP2565846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e5497ab4b6e9632cdd9d08be7a9af0c77845ed5fdf30ada5c85f6afb92efc2. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:48:31Z), 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/GBLFP2565643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0497181c365e880590d6b1cac3761f692c31c0849fd0823cddb8a8987498614c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GX53U2572790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd0e5c0cb41bac2d0c43cb2b7a387004eaeca2810b6728ca3c8bb7776cb14e9. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:38:25Z), 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/GX53U2572782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f400c2b3b6cb238bd15417af0d7650b0a9dda9357c57bcac5d14fbc753f77d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:59:56Z), 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/GX53U2572796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f36c2237b5f01a65661f93821017f6a309d16b87cc47e3893bbe8736f47861. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:25:06Z), 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/GXHAF2544099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a3ade2a8c8b6a9de88ccc4fd50b291ce2f740ef4cdba3df90d4b6d7a29788a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:29:17Z), 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/GXHAF2544090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24be2eb5b6a8483c9594554384bfb13f1a5518a16ffb13cf0319d6b2ea2ce82d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GXHAF2544067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274a9ed7b451f573d00efd044ab61707ab97b9616e83495a230a7274f136c8da. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T07:51:00Z), 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/GXHAF2544105.