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 0xf9d21bf4022ee2556755feaad789d15ca37a6013d2331858ae2b355e6244a107. 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/2c324a89-d48e-4a43-b2ba-75a1947ac39a.json and https://artists.proofprofile.net/proofs/artist/2c324a89-d48e-4a43-b2ba-75a1947ac39a.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 0x88174185043e2372245a2cf99d318b7b103919a5d07953118305c6e1f2fcb083. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZTAW2240440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abd7b88d554d92885362bc655db71475c035f9fd41f55825bf4de59fc55bb29. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTAW2240444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba0b29c2e77ab0c7651310e853988522c6e26de5c9b49f46ece90fc58ff5ee1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:39:48Z), 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/QZDA72426421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf53bef7b05b5e81d5539035c071b9a487540c7d8d64345041fefb89160c1f42. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZDA72426423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd223ae0fb583b7836724ce7bd8962d7cbac8f2ae96c7c4c2df3958216e1fc85. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:37:17Z), 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/QZDA72426426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00149b7db7be61b07ff2ac2f16f3deb3eff933755b7240855e07d6f9d202df38. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES62597670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f3b435b2b94d7db2ed720b64880c1d54b831feb52305d13e25b9f907edaca9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES62597672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759c534652c4c188739fb19fc760fd389c6c083a72b0527c52bbb125159be429. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:45:56Z), 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/QZES62597673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec100e0f4bb4b1c90f0e7b463e6376ad15dbc671200796930859801e1e31b98. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:45:35Z), 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/QZES62597677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bd1d66b97748e4296d72d34b3e7f23f058484971dfec9e30777e243b65c469. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHNA2587882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e32cc9d297953870e5eb391c8ae70c497131c03bec88135b9918c71ea8942c. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZHNA2587883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3c9daf49445a9a9372cf1aa9ef58c575db1be5c0f5673106c3c478b0be9867. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:52:56Z), 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/QZHNA2587884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47797e4c06bc070442618595aa73257aebb0bf1b8d4e0acb42b0adea32c15f09. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZHNA2587885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e236631f207d26813773ab21f9a44a33f58ccdbd262f1f2f65ecf17b686945. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHNA2587886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a41e04535e05a72823a95175ac68f9f0118b22fc1b997f2c360b53ed35c4ea. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:54:11Z), 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/QZK6Q2566710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0059caef44e4fee6860f58795103bac868f4307d72d31ec00c3d3199cafc8044. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:57Z), 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/QZK6Q2566711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1976bfb6766a7c6bede205d669ac991b041d5d53d3dfa1f0b66d531b5828524. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:07:03Z), 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/QZK6Q2566712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2625a4a89b920da5ec94e80e14aa7098545c50372204ac21e38da3bfd6dc4a9f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:23:28Z), 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/QZK6Q2566713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daa0fa65dc2c707764cb64b74f8ccbf5d61ab9bfdc129895293264fab16dea6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6Q2566714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa5b3ac3fa47f4235076ce38d496219c9121ba77ba5888668b3ec620abcc263. 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/QZK6Q2566715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4130c28bc64062eecce2a017c482ebc9b3e72a189f47fd6fed72b295d42bfc4. 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/QZK6Q2566716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42e7723e16caea5e85a945f2096a8346cd3ab7d3d1c718510ec1f6c9a3355ff. 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/QZK6Q2566717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93587fcd242681e0c3604a8ac69c47ea8c149b86da27de24f84f7d452b268cfd. 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/QZK6Q2566718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc6c9e59cff8e4ad22eb22656b70000a5e4dd9267ddf8e7cef3b3f852329050. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6Q2566719.