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 0x7cb02766b90ae309731ff9f06f4d2457265fb989e7326b7bb26c9effa644d728. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/923c7bf0-b2b7-4136-9084-77b3ddb72d46.json and https://artists.proofprofile.net/proofs/artist/923c7bf0-b2b7-4136-9084-77b3ddb72d46.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 0xdeb19b756c7eac9c26fbf5f5ad61e5994a3ec13b07a45576ff100aab5224e8a1. 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/USDHM1423624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c8eefaf8e79b4cde10fc121c042df0160640fcd4f7ac418d89048f9e4fd111. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USDHM1423626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33110c02ce1f70d9b02db12fa2bbc1178005d37dbc74658ce42a8e3090268edb. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USDHM1423628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd229443a99736ce19afdca548f3c6d9c89c96a5d3aad8c5ed111973ebce95d25. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USDHM1423629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1929c5d9f85b2abfadfab663ce5bcac1631477460c3efd0a293747c9f2b40e3. 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/USDHM1423631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16768c06d515a741f9c47651d7f5c9f389ec540c9600dc8fffa52e374ab11bc. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USDHM1423633.
Keep on Singing and Dancing with Dr. Jean
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853c74790874402652b878d3b2b9edf2e06c9ff867e8fdec9d2119f771eb16f7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USDHM1426559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad9fe8c11a0051f5ed03d9c10375eb9df38acd810a7aefca7668d00114a6dba. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USDHM1426566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044e56182af41b9d8031cd8f29a0c90091810e75f7ec4218f1bab226ddda3e28. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:43:34Z), 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/USDHM1426568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db19ff73fc8dedbcfd243056d79498f0c2dd64739eba2a4f4d97856ef938edc. 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/USDHM1426632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1101213399482d0f1588e63c5fc260c8c812826c8bdb6ba446d685889b5df6e7. 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/USDHM1421492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28791d48164202e4445d37f08b8b66870d6f2b86c77aefae7e4acccd2bf94396. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USDHM1419608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4e9f8a6eb8f379e68a7f50a708de6f0e38695e0a4cac6d0a262b2f6d816c62. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USDHM1419628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcd592248016d3478b13a9a17d6a4291b70708a8fabf43ef0163249c7df696f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:38:19Z), 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/USDHM1818569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3024b612a2d5dc8a9d930167db4901177e831d8797dc190cb2957c1af893839e. 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/USDHM1818571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1660ef5471e6ae05904c5914d0fdcc83dee31f4c57a904549c66cd42c5577975. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDHM1818599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974aa47be9891d610684bd96450b42dea1f1e269d23621f29f4882e757e8f2ff. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USDHM1426733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a5c9d9ac2296761e64255a5960e47856f509540ec67bf1866604f44577260c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USDHM1426735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0452ec9783cea7a69df1ee454e4ba6b9fca413bd6bd8c845c0680d4a877899. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:11:05Z), 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/USDHM1426743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843b9c429175b338ffc4058cec7038c343d66d0c5a77541c0fc92762297ffe82. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDHM1426744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bf84c1eb4cce033514e0ccf339818cc8b9cf697a9677149ebaa1b389ffa645. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USDHM1426747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b157d47c451753ffb5b3602f92d2b921b75f6c43af670dc02c5262051ce9781. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USDHM1426759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12428405b1be10159b6044be09d0ac54c0e61241a4e6ff2aac7c084e041b14e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDHM1813654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb90a4f0f4e3db16f940e486187cbee0215ca6398141d7934a95b9d7aa3250ac. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USDHM1423652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce22f365d0db50dfa42e1dbfaf353bbc112b0e097b6f52f2f541ad078b84da6. 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/USDHM1423653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fa981af2d398d7f34f9f9ab518a47ce004cb268c3c47b624ab2b25063d6984. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:16:36Z), 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/USDHM1425007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942b1ea31cda0964016dfc7922090859a9719678ec017042459b7a317aa035e6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USDHM1425013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a71b1669f91d75acba33af24bd3351020049b8d4cc7a307119817530e6d4761. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:02:52Z), 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/USDHM1425394.