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 0xe62ddc64a18b301108c4f1e573ba7b909acd814b733fa260fe28bf99683fe19e. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdd6d568-38a2-4271-b534-94b5e5273505.json and https://artists.proofprofile.net/proofs/artist/fdd6d568-38a2-4271-b534-94b5e5273505.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 0x2805887c0672f8302058f0ba1ed4359675aa407067a6273c00aecb9ba6ea1a39. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CZA163386446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a782c724104213a844d8b8ee071ac99f2c6bb8b2dd82e50b933f078c5b2b36. 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/CZA163386447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e17ffb22e8248ecd6d7a604c8fcab4888c7112081d7300fd63030aca061d2dc. 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/CZA163386448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d379af5ebcdb2ebc8470635773b5b7d4e44adb164eb2d2c36376c956f408b8b. 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/CZA163386449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3a2d983cdb4a26fee96b8ffd01d677eb99c2a4ba0ec8ffdb05f924d5e7e256. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CZA163386450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20ad1a5000cf4645b2ee1d6f8691c5c4f099cef34ea5fbbf3f06950a97367e2. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:18:15Z), 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/CZA163386451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa8a4f7f6a12bf519fc04758833114c0821b549dc3988d0a1cc048c4eca4ef9. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:06:43Z), 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/CZA163386452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f37bd297c5c96d05583f8f91056cfe88b752a8a9683403a5d20664f0f355e4. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/CZA163386453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726ef4dd4d746738f30f176baab468b6b9ee386db354b63f7c6d5ceae7269312. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/CZA162451972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161972dabf14afe61f610dc79a98e270007bea8c3eb8ffcbaa81ddda9eab87fc. 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/CZA162451973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868843b68748c6df75315cde4109efb73cd872575ab3aa55531e4a37b92ba42f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CZA162451974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab62d6abf301df354cd98be21e439cad340117004a7f7733f6ca37a2f3800ebb. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/CZA162451975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd06e8b79f648414f8107cdcf28624477e89935fb7607c64dc97614762687cd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:28Z), 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/CZA162451976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48eab2c42cca75d70ccf058ea4396590b54a969b565081cc707e6d43713f8ded. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CZA162451977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2ec5aa6cc8da14eb85f6cbd43fda6579e3e139be33cdfd6713730fc09cb69b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:33:33Z), 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/CZA162451978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d697dffc13b9c47373f7391f7b8fbbba9787c957476862c3eb0972734844296. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/CZA162451980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444e99c24615bd1412124178475e8f0ef20e7ef0524844fdd37a9fb32d65ae9d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CZA162451982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b09e45908484ccf13b2433b98f4be0e2480d26043edc4479bfc234350bee3da. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/CZA162451983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeceab65cefa84b7f944f33289e6cb0ba106fb9084c82cf21d96585277d0b788e. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/CZA162451984.