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 0x37565e8f34c8c828da721cab4a2d8ba66fefd56eb2191c1c4ed26639ddd1593f. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed94cb68-0c65-44cf-976f-ac2c1922d3bf.json and https://artists.proofprofile.net/proofs/artist/ed94cb68-0c65-44cf-976f-ac2c1922d3bf.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 0x0cbec06992323efc73836da59497ac0db2813482ac5a19583db552f694a534ce. 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/USSTT2000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc979d09dae2c287e23e850ac100c265369f3d13cb728c222434998c749309979. 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/USSTT2000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4a6535f2fb07867f4c0710fcee7f557a88f36d862e1f226d7a6d192fdfa361. 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/USSTT2000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63ef17112261e24b1d6cd7e29cb05113f2e4f549fe7bbcf6c865f140563e390. 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/USSTT2000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec5acf7dd91ebff39d7ee053d5b10032442ae57bce3bc6398d7559c08c09d31. 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/USSTT2000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd0e78ddf44f81692de145b4d3073afa8f8c918c365a0ef86f0c114d708e5b9. 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/USSTT2000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738365aae4b369f7a6940e76b18bc8819d0cd1de12abce090765d0a30b26f72b. 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/USSTT2300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8ef771a822d6bffd77c7fc9b0ca0dc8ccf30fbbc2f058cbb563095d5322f6f. 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/USSTT2300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513d0ad417cd34c688431d324ae038a28e9cf70eb3065f5a2e427e3bd6523583. 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/USSTT2300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe365187fb7f02580fb6f4169b18462d95b72240ea307229cfddb766443bb0442. 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/USSTT2300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8ef771a822d6bffd77c7fc9b0ca0dc8ccf30fbbc2f058cbb563095d5322f6f. 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/USSTT2300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de9b939df2c72631b410402170be027d94bf9fb23d235312d866dd654247877. 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/USSTT2200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dfaef1b31dcdbcce0cfc886c7fe9f5c8f1c2d31342275fe4ff35bbb7fd04ef. 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/USSTT2200213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4a6535f2fb07867f4c0710fcee7f557a88f36d862e1f226d7a6d192fdfa361. 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/USSTT2000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45053f5ffe92704efb65e82363ebe2ecf214775e4f08fc70f54804c8a1d6287d. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/USSTT2000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f900babd76e7c669aa69bcc238fe22519a3528e12f930b3732762902948237. 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/USSTT2000214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce93372b3c97e4f27271151e94fc6c9556ff7ba20a55a12a718585847f72f7d2. 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/USSTT1900148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0110e8eb0fadd1eb472459626bb03db39d43b98ed5b6ecb3ad3e79112ce44ed. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USSTT1900149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc647688d3e5968a8f371946c40623beed61b1497a4c36123a6f61eef289256f7. 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/USSTT1900151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2765f476b10b38d41187eed6685988528a18cb621db024c0fcf27144a0b8572. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES91804198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267c9d33368390c4d6659f5c1d35559bd2369d22fdeb42dd98e8fe20f00468d2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES91804202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525857ea4f58905e0afa9e6238338c6c1639dcbbb7527d9e824f341b244c8d96. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES91804203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0544d520b8567e514a819320924c6806b4c9e3e5fe991f6b935c3c6985286eef. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:41:37Z), 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/QZES91804200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6f265c748a713dddba22f707089b8e430a6e26628202444f7ada155a4ee8bd. 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/UST8K1780869.