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 0x96576b60fbec06f6cb99db754c0aa794cbc6218e91d14c86b3224c5bf6e90561. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba2a4626-8a59-4482-9d4c-cae5d73851e2.json and https://artists.proofprofile.net/proofs/artist/ba2a4626-8a59-4482-9d4c-cae5d73851e2.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 0x95b4e5597d7b00b3754e8dc7fc7b2149c7bf14b8f01e1044ef3b7f3b7145bff8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTAZ2367457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a08be588321a7f9f28c12cbe1b2047cc6d27d9047b1890f79b41a92501f16c0. 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/QZTAZ2367459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63439238b86b5183387e70be793feb529385db781a68b769175ee3848c1ea237. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZTAZ2367462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdd325a2650b4873815d920b1c3751cda18da50c80d2018ed29f7fb54002cbc. 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/QZTAZ2367463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421322322b3d11b787e8bb9c30e89d721ff7e7ed3964fe88d823e3459213dba5. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZTAZ2367458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eddd3cd6cec8314187011efb24108c02a5957e249c0e5337a8e65c78f5a4dbd. 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/QZFZ72491747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffbb68081c66a3814e6a7463c3e1026a2dcca8dde772786bc98d7ea67bf1968. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:58:47Z), 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/QZFZ72491751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efc6cf55baa6c2583dd025558024a529b626657c852d15dd7d89e01ab2e32eb. 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/QZFZ72491753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41607d4d501eda3dee43d0cca366d6ec1ee29cafac8981ff6d073ecdad2a271f. 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/QZMEP2476230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23840e2cc93c0b8222f4e1b3f1bafabc55108253eee2d960c83ad8f03981405f. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZWFL2440787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3584057861ba874fde8e91de9adbaa67d5dc0feebcc2396e6cac9fc432f6553b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWFL2440789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eea041be42d5075e31ee44a5052e832baad2466ea52839811768b1be35dd06. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZHNB2532660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337a8f38cb613e7da3a0225dc8c0e92eb0b559a5b036f129f6d9264db4abe8dc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHNB2532661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecafdd47c23b740090f83754d7b4ff557ac078c3620ff9b2f1e893e05f1c6c7. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:41:29Z), 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/QZHNB2532662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7d6b3d78247e680cbc268b8ac4a8a99ec2c2d7c6dc5ba2b9c4f3b7c4dab7e5. 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/QZHNB2532663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71451574355e7a930e78e6dfea4fb1ad7ce9b6d7799babab83d29e987a6a6441. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/QZHNB2532664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3ff1daa560171783dcf478c8f9be6e7f9e5d8789f1507f7e41642163f69a06. 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/QZHNB2532665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a280c3b4c69bff1de7576f36027c2c192afc70974c2f04749bec4c70da8c30. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZTB22553340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ce81fe7a7563471dcfb909d5249dc8254cb43a817e606983ddf9c0575931c8. 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/QZTB22553341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b52a11b45e4d7770b5594480ddc02e3f73047a59cef1bae61b179bc0b700248. 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/QZTB22553342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddaa43ee2c059ebfbbcdbdc7a06a0b02a62cd2975b361b4ed81eb0d0cc8680e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB22553343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe287aabd03b680b40dafab28fee949a055d782d8ba9866c4796770778f444e8. 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/QZTB22553344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0267b78d74fec15f60a87e8fa1dad261e0ea1834253970d6491e10ca32582759. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTB22553345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704bd959fd81bf05eebd4fd3fe4bcf370fc275e3c869048b4b61f9779da47260. 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/QZTB22553346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eff0c0e9f0746723b85768174288ce7304227732984fba8fa82b0db26242a03. 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/QZTB22553347.