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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662b400c08cdb096fb0ab1aa4a90ac951df1f18d01ac054862ba7f3668561a95. 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/e34c1330-3788-49c3-b5cf-c639d2389256.json and https://artists.proofprofile.net/proofs/artist/e34c1330-3788-49c3-b5cf-c639d2389256.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958957dd9426ea19ca67de59433a1979dfe7b327c1f84b285c92ef4f9052c25f. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/USHM21290723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532abd4118d9e3b78ed967a33c4a0303db6137d8f86f2ae4b48ed74f19feb2ff. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USHM21290724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc27386391ef91d1240a3a9a1bad468b184e784127ee9efbe7a6bcb3181c56a. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USHM21290725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf44091899c3ca317631266822b0220899168dca7737cb27d9627bdd0b6f54c0. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USHM21290727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf8d9d76a861b62da91d676b5230ade526012693059761211c0ddde13f14876. 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/USHM21290728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcae0e0cc1eba644a260ab8ffd9a86b46179e676988776545d39aac1d98fa51. 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/USHM21290729.
Super Secret Service (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4223619fbde39ce97bc76c9fa55714f989f4486429e86e59f405e3bf7f3452. 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/USE831528861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad28ff9cf1a701ab8048258bccd4b0824b149b19975984973c06ce229e5994af. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/USE831528983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99d630cde4221375cb0df8ffcaf9a852a62f47e742de12e9530f93e04b5ec78. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/USE831528984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8babbf8b15ee400d8f8b52ef8726565e8d7681024442c3a36b5ee6b8ad5b28e7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USE831528988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1769bf5a5eae7f7af706c34575b3e12caad4864a9a8865ec90d5b33db01e4db0. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZGWX2075657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c14be9fd4219b07358b971ae48e111885aadacbe847f56086bb30ea5ba71a9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZGWX2075662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e1c3c04b848acac28f00c19b9574c9ca7ba8f8d1b92cf24cc5338f3f65e81f. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QZGWX2075663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe41c9c846a053f3e4b310ea1631933014f2086227dd65d35cff3fbd6a416286. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZGWX2075664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffae3de551825ea9b206ef4c8e759735db75fdbc920072edcab05c0da628e949. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZGWX2075667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b8bfe59c07f55edea6bae517c7699c08d754a9d207d5583607e67b4eca47d7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZGWX2075668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3be0715006335d06525a02874a0d30b9a30bef1f3ce23a02ee94b1fde191e1c. 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/QZGWX2075671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22fb33f21caaa20137d3571fa1b99cf4a74ed2f9c9e973d6f6bb6e9428b6c7a. 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/QZGWX2075672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dfd0b123027c255e827ac93aa2c31fc58d8fc8eb92b6ad772cab43c86812a2. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZGWX2075675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e32a44bc1e0e6566b2e25d41744ec8e3d2e2490da37063867cdc1e60a75af8. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/QZGWX2075676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4b7a99695c0d63f820fc557555521c168f5de80b8fd7935ab94c904736a9db. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZGWX2075679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d703603df346073a1faf6fd1b1008992826401c08922d1995d85bc3c0bfd7f3. 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/QZGWX2075680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7976a17ee58ac56d43c7de1e9362970b8c0a8394e5ecb4fd5544374c80462809. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZGWX2075684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706db64a4570fda216f6c4f565bff3ddfbfbab23cd67a981f9f346108a31ce13. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/QZGWX2075695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36c670a9f2d01a56670fee89d2ee420b4a270b595fd6e1719a94c88e553f74f. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZGWX2075697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa382616822a28f06a89d086509573fa20a8d2a3a00564d008196d4f07b597bb4. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZGWX2075698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9671910aa3b9f6bbc0f23c3795187fdf96923c03ed3eac89d7b17cac887ce94. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/QZPJ32380620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cff8face10cff871dd6a21d584dd19b5af6106f8cf496c501d7bf298c843aa. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZPJ32380621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca20a2485a62f0858b91318b4c864f0441740359c466b95df3ebfc1b1fa815c6. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZPJ32380622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10d5b58afb7ab53e2d3b974c287f3e7c3198fdb09b453f3d69069034a6dd1bf. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZPJ32380623.