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 0xafb4ed86d8c564b3ea1e260a5d87bd98533da6b099dffcdf51a6229140f327bb. Chain 2 (Bitcoin): anchored in block 954062 (2026-06-17T07:39:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/479c07e5-83ca-4005-9601-487514a00fa8.json and https://artists.proofprofile.net/proofs/artist/479c07e5-83ca-4005-9601-487514a00fa8.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 0x632fef925af205394d088f5681f8270ea69b917f6fd9594fa898f075f683f256. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:14Z), 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/DEVL12500169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b55978db5225b2f644c4d9832f9bedd39ca464b3e2ad91938d6352f57a5e97. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEVL12500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7ac6010233f6a01e058a3d7238fdfd46fc24fbe939aeca5111660e0bf6663d. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEVL12500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce523af8f5fbcbcd1430247c667832ba15d24394ca69c096ba5ee199c6451719. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEVL12500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe613a1836c29721bc9261cecec9ba5a913fe274e6a80a002ee876b934c40f6ff. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEVL12500163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f6c864b973d2e651230bcbb800d1a4d52d29f7b37f5fe3e1e5203d61c44ba5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEVL12500164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe009f129381840b24a1b1ef3d1b50696b3fcad08f3e3cac4bdbe0e1f1cdb62f7. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEVL12500165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2390ef33c553917db1898ab656629346396726e690cf385da7091a8c781d4c09. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEVL12500166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f19e1b99b73b7c84f7499074f35952969bb205b988e38670aeae9e5bd1dbd24. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEVL12500167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e345fa9261dfdceb1a7d0afe90b779a56104e42342f0afa6ed2deec168fe01. 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/DEVL12500168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632fef925af205394d088f5681f8270ea69b917f6fd9594fa898f075f683f256. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DEVL12500169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7f8d6f22cb96d89fc1546dd0f4b38785b8552ec75e8d77065b7e1a4d1a35b5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEVL12500170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584ea6d3028417a59364e65a601a86f96e272cfc4f106b575ac08c5b87c860da. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DEVL12500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7cf9b23feaeb201e44298e43aaa8af75a860ab57845246f742dfcebcc2e706. 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/DEVL12500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00760e02d113fdf951e5ce354cd171ba82ed2049bd8c11751a9ae669fedecdc9. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:09:07Z), 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/DEVL12500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2067a6640d45557d9fc0c26b6c9c951238e3afdb417172340fd95f55d3c9f2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEVL12500174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf8e0b25957553d7f190c6305df20306314f2724eff8b67af5536d266341f5e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEVL12500175.