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 0x22eb9f82d67016f5f5dcb1d7750b0bb33421e5f56321c719defe6b16d4224f63. 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/785b59ae-e4d3-4601-956d-2b3fd5edd695.json and https://artists.proofprofile.net/proofs/artist/785b59ae-e4d3-4601-956d-2b3fd5edd695.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 0xc49788ef3c7166ceff473ab5636388e1390ad7d52d9ecf2c440c012e8060f789. 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/GX3Q92464341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64256abd97e66df8996c708bcc4de489f453071ab1c41cd4677edef92c1f2d22. 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/FR6V81416436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad978fdeb4302666491eb105a6ab860252788fcd1ad9e24a67ed8f9c3e0d04d. 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/FR6V81416437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3078442761cf8f487c58644a037eb85fb0c6490c6757e8108061cb84c2d2ec61. 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/FR6V81416439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fff93bd7424659b872f780c5a4b35d3d8a66c6a4980830a31ca5711680ea1a2. 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/FR6V81416440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d04941cf96dd3ea5a138e7310f820f359f11feb57260d3c7765b8bef8c2357. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:50:39Z), 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/GX3Q92461958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaced89d18a04a27845d090d7871e37a96eac06a7afa56a301b22afd02f16fd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GX3Q92468371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c03511e1eb2d4f44f69b96cc46b383591d152a8ab166fd299ce1e5b2e8b3144. 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/GX3Q92468372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba489f51ee99f049372acf004d575de384a5f782a53966cd1c6ef3923fe75eaf. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GX3Q92468374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a3a9aa18ae70b46ee7efc991239f5b58e2a18a966178f89f20ad02b35d13ea. 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/GX3Q92479243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1042f3d0d5bbe31410cf6c009484b8b9702791deab38615803346e49f375ce3. 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/GX3Q92488406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177ec40354e39f58d5ee59df30cf34f882b9cad9a861d672578302948c00e1b5. 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/GX3Q92488409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f134579cd49b491a5d13261d14a57416b6d4c163c56155a5786c7044733061d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX3Q92488410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c06e92fcd0b5d052360726588784e20d01f294e04ca4d09b6521cbd5888b76. 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/GX3Q92497267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c14054f20a7b41db00822704b828803689bb341dc4968e7f1f6143c5c5fd64. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GX3Q92497268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599ffbb37f89c299e7f98587e03a72f21b38fc417429bb6c822ddc08683048f0. 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/GX3Q92497269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88f747d0b598be2295b81791256f3d540e1bf7664c2fd5f206e80346849113c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USUYG1729477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90968c3fa74c28b7cc69d279fab4142055481ff951b9c9b9989a7b10e9922b9a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USUYG1731090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3fad28e16a06beb6cb29061193c84206e510b0124f81af3666d06e5c1e18c8. 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/USUYG1731091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa29b54a3571ab29600f15a3aac80ceaaaf35416dc6ffc41083716979a15ef5. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:36:32Z), 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/USUYG1731093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8539b323ddbf36a195ab5a4a839c9eafc7b9e58a70a682f129e83457fcbc29a4. 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/USUYG1731095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af4f83aeb80f9ab7f6c929dbef6472c5208f14334cf6409963b0eddea7d27e7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USUYG1736820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac02cb63406e7952ef0d25ca767a394dc1a22e1366a77413c39fc50b44da6d5. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/USUYG1736821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb39aac1b68c1a6c33048213d09fc36304837c62ea094da7bb29d28e38d1f933. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USUYG1736826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79119373646d9b56de4f3844dc60174aaf08de4c096437f9a67d63857c7605e. 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/USUYG1744268.