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 0xbd683be8752f1d23f33d75b417e403e63fd36ce00cb148f904c60d95fb67206f. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c70957c-b2c6-4aa5-acee-ff8a017cb605.json and https://artists.proofprofile.net/proofs/artist/9c70957c-b2c6-4aa5-acee-ff8a017cb605.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 0xabde085b47a75597ab46ddbfff2d0d42dae965bd9c9f943a48c746b454587cd4. 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/RUA3R2111906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0735d865e1cbbc67bbf04d80e7af72e43dfe60182e173cb6f5b288f7c0e396. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/RUA3R2113058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d8bd4b032529d75ec0f773a716504c50724955a2814854dea278304252fcc5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUA3R2115245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280db9bc4ce83e240f0c7feaa224236d87a49d80eb70d55ee0e9ef018e0b953d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:33:58Z), 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/TCAGE2251827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e08fcabef952180f78b0b51b7fdcb255eda9d1fc0482bd0af81acf3fca57179. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:20:02Z), 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/TCAGI2292297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e29688070b4efadb80ee1f06c1dfb084965ebe13bf1dada527f65825ad7f789. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAGJ2281649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e6c2910bc2e968a4fff706a85fe4c551c8efc2c22a66dbb9eda97232d46442. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:43:53Z), 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/TCAGK2295985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d225440739115948f5eed674f8d2f2c7ab7538e38c1a8a96647273e1afe43c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAGP2287120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32ea074001612678b3066ee700eecd165536ca729dc60520539ad13d9803997. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/TCAGR2291635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19df18ef8d5412c55743e02341c7c10a28c96a5ca9030074718c70c83bbda453. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAGU2342918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5825bb04b2fef4ca21d9c92b80bb166946739983dbe47edf4c94a2f3c22b87cd. 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/TCAHA2375981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3396d4699b1111a66af7272c4b9cf3c0bfd62822d6fd1caf41b5fbb0f7f11685. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:31:53Z), 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/TCAHC2310345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e780b3d476f058eec52ced1d8cb57e659b09156db63abfa13843503c86ba1d4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAHD2378074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb345b2815dce88ba2ee1a577bb9d98b4e690be28a1b86b36a01c0b42ad4b51. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAHX2471939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8514358c985ff2e1ede026076ebde8f43f47f84056850205ad903b6bb74ea8fb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:38:06Z), 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/TCAHY2495378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b3863d849fb6601c1ee5b11b31c6e7164dbbcb6e88d6625da9fe9d61904e3f. 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/TCAHP2385790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b9f4ac4cc8db40b7cf5d76c4d4bdd26c395960c2d22217c06de73e0bce9f93. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:41:37Z), 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/TCAII2495926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ea8fd8fe46a4dcba51adab04fc411b5244fa2814472a02546c83c67101d554. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAII2495928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6aa75793676f9f422f775acf90225835fb0099a3add6c3b8b3ea1254b80a23d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAIQ2454210.