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 0x8656e890632c4fbd8190f427c0e4caf369bf252a8124ff6368a485111a0b004f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb50bc4d-44f1-49d5-a871-b439fcb9061e.json and https://artists.proofprofile.net/proofs/artist/fb50bc4d-44f1-49d5-a871-b439fcb9061e.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 0x99d864ee32477de6a86dc0b38a26e5ef86d7e72099c80daef09e6ea73a2c58b5. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:21:46Z), 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/RUA1D2230626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118aa9216ff3364d87ca82d119d3f31b31bb668351ce7b102a80e44f20884d58. 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/RUA1D2344149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c124a9b3a28124e91e36c5829864aff7b9a3a00975f649ad09aae4f79b7920. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:20:36Z), 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/RUA1D2344150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8385763b6273f14a927ca2fa85e9eea147a9100ef3fe594fe72f0f34d024c83e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:24:16Z), 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/RUA1D2344151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dcc1161e722491dbf6fd5093b3da2fbb73ad902296484b624839d39ead5d03. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RUA1D2344153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3984cb9c66972d079a7b712799817bba6114df0b8ffba3bc6ea93f11c2125a9. 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/RUA1D2344154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2681ed7bf43aba5d9bcc1ad2039ab547a70ec6b70f973bcfa64f7bd5296e49. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUA1D2344155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5604462b35b13faacdac58ffcf29cb63efd71ca9d8b5a716133550fefa54d4. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RUA1D2344156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8013f1c03db0e5ad37090daf525515015fee97525e4243aef7a8b0268b057d57. 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/RUA1D2344157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841f023fa65c3950ab6d382475ff80a7d54ca29c3ddb57e3ef8f9a561080b149. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/RUA1D2344158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea988e553d4cd8a975010e6f9d80adeaa9e0b479258a7f7c21c84ca68c5b204f. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/RUA1D2357753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f13ccda63b316cbc2b0fa34c086c657ae2c7b5f9206e6251079cdee14d6fb4f. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/RUA1D2362514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751cad29ded7629efb69eb0df72c5ff54aaf2bf164941e44498d5895f66250c8. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/RUA1D2362729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacef2094870832c4ccb0f1d9753acc382d2ca8050bc7a01cd7b1385be19850ba. 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/RUA1D2433850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8d2706cacfa6a82287ca6f07c39f2445adc459c4dcacffaa6eb638cb71d6c1. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:35:06Z), 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/RUA1D2497004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189079ef592b7a7c4724a90a5797673bdbe0cd930b4a06a3a184fa33b211da1f. 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/RUAH62408246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9700bab50b4bcc4681bc3bb22ecc4a863f7683ecdb6d20e395d2786cbcda2e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/RUA1D2514973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa775a594a267241dfdc6a55f181c55d3f88ff6ef7d8bfdf293dff7ec113c2c22. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:46:57Z), 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/RUA1D2514976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a8e8585966f4fb7fd4f1c49e1392b913ecdf41026063793128b0391b1368fb. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/RUA1D2533554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa934cbc9e802189afd8e53e8ca8a80bb5a66cd1cd7a734ad174f79fb75984f5f. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/RUA1D2549148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2043db7022c564765ea5bd4223fe7ee5a0ba877dceb03e35b4d98e444cdaaa89. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/RUA1D2576056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1c0da8d65ab04e334857bf11aa99453737a59610e3eb7b941dc780108b4547. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/RUA1D2589910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c386f3a5109f1153d0f2b62dd1fce2a89667d8688dcdab38fb64a1f33266964. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/RUAGT2504225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5382d34157b78d56cf8dd44355b8234a4724b6cda91e9f1593d614e0b7e1c55a. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/RUA1D2591156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7789f9762f4e7ba6fbed732c1e40980598936cde06d458391543e63ec511d14c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:28Z), 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/RUAGT2506641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba3ea7c71301668c8fe68e0458f85c65a416242cdee9caa08d1edf99f061b33. 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/RUAGT2529425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107a05e767d9cb91e9978cccfb8dc38fa8d11788fe9643ab64f24812e81423d0. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/RUAGT2535681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ec74943bc3bdb44681b8a2294f98c35ba4494afabb0cd190f9bed94b6d1f25. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/RUAGT2541485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0d7b330baec95c8365c924fccc13bcd3e247d8e61e49045c2b3010ac2d4202. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:35:54Z), 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/RUAGT2541490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181d7c19748bad354fe1d30cdbce6d34591dfb03de8095d2b4ddf2f374911542. 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/RUAGT2548798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec1dff67e13e63514c3d28588ce65f198839e2b5b76704ee6e379580cd960c8. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:11:24Z), 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/RUAGT2541493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7965fdad7fe5513b6e449005435de51f92be565eaa80d1216a51ba0d66d9eb. 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/RUAGT2580652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985c491ec841c4173314a71a6a48cb242c2623952d6edf47a310748bf652d330. 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/RUAGT2581635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc38161234604d68f12c428c822f9d77dccd9c68b341b48ce3bc736996580377. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUAGT2588966.