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 0xacc83291609443ab4b84642ea3efaf36541a01990ba096112ec3fa2caacbd165. 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/b5e1c69d-3679-4fc4-b376-5008db355d5d.json and https://artists.proofprofile.net/proofs/artist/b5e1c69d-3679-4fc4-b376-5008db355d5d.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 0x0582813b93a9ce385e4ede1a0828abe7f3831dace675996b4a7bf49751b3bfac. 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/QZHN32188629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b7a9fbfa4418f7350dd80805c18d3baf4cb130f89120c6f34c022ae2876640. 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/QZTB52341096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfda822718684979eb97478671f6af1208c05ce779e82df012e0688fa38cd2b0. 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/QZTB82246956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5424a08a0d4f86cef75a44c68443ee33a1080f72f70df9887c476fd93931964. 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/QZFZ42319257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884ac57d8f1858be71c89bc840fda2d0e4b053e76fa7238970333718fb81d0eb. 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/QZTB42258631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30372391289b8308f9e9b8cf781c66e2a48199c90f52b65a228fdb2a76df3be7. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZTB42258633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa746d9ec3f152bcff7ff26a9eaa57159d8c2da2fd33b76fa2bc16b69fd4e24a8. 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/QZTB42258635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d9be45a45f776cd8ac8db318b386d861246297ff9183375e1df5e15c2d436e. 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/QZTB42258636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5a886989203fc5c50531011d322859db3af20ceb14de2c020995d03d00071c. 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/QZRP52152524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc0bb5dc0751cbba85c8506906d97e9fa3c9b06ec69f3e1d3cfeb63bafd8b35. 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/QZFYY2261766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d2603cfb88318cce1b5122cfc466a15263dc34ea18cd92b99f01b95ae1bb89. 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/QZDA62237565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1251bab6b47417b2505d517bbe4b4546cb9fa95b2de9c4759167fe83ba0973. 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/QZNWX2003076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11e2c07a91876d2aa147492114766d3d86710a3273276a4c315eabe37dcceba. 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/QZFZ31967614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbda27ed2b8f75ee5765eccdbe96188a71356dc23f5f1a8c190e383f49d3edec. 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/QZNWX2003079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264bac753dc8da7d987ac6c4b1e7a5809b3d2ef7eb95c586b375db9ea09e4c66. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNWX2003080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b95851b88c229826ef3a0e71d6c473e360208147068f73b03e115e7c5248170. 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/QZTAX2411679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd7a04bc442be807e430f7f858953e244b80462c636a5a8021fac39603f27b0. 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/QZNWQ2460713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82d84f9ba26940fce00c779a4fcef60f4b85f50973374acc6bebc2d130ca21d. 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/QZK6Q2463309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d6e1afd23f2951616b58da02b1858c59d4a0af15b99d84a55ca5f192ac844e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTAS2377198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651dc2c33bb3cafdb1367e4e640a8bea3aa995f429d193a31daefc247a23e8f0. 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/QZK6H2345340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccf6c0df298c83148eae7f665d8cb5276e6196f54b53b5aba8fb458b05bcebf. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:31:16Z), 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/QZES62364002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da97244d162ba957fe467559fe6ba58c43f95701c81bbed89d1aab9240d7152. 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/QZFZ62393265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d1a4cac69e41fcca561aa3af8bfa8f6c011b89c2bd10370da91dc85dca4b30. 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/QZMEQ2208192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6608673796f96c92d373b11322a82d04af9c2ba0ed21b15f587ce227de2ff04a. 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/QZK6J2226229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27459034c11691ede2beaed96a8dfc9cf9594b793537a6c139c583d6920168f5. 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/QZK6Q2291370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc0bb5dc0751cbba85c8506906d97e9fa3c9b06ec69f3e1d3cfeb63bafd8b35. 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/QZFYY2261766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5a886989203fc5c50531011d322859db3af20ceb14de2c020995d03d00071c. 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/QZRP52152524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc8a1a29b3f5d51ed83aa693cc685c8cb0e664c0be5df1771255c551e7c8201. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZMER2137468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3e58d39b0da6c4a4f1d3147241e34570acbf961203c2f5cc9fc0fb54acf65d. 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/QZFZ22164623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd3654f31f8fac2587dc8f17d2e9961bbc3f2fcf115aea11110fc9d689f0361. 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/QZNWS2193788.