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 0x10d3a2b8b748bdec2aa20a4dfc9837e20a0d3aff073cae8664fc0b94a65a56eb. 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/d29f7108-f68f-4916-b72a-904755c19c44.json and https://artists.proofprofile.net/proofs/artist/d29f7108-f68f-4916-b72a-904755c19c44.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 0x1452ff46402fbd4093fa1a52a4f0ff27dccc5f8d335caf81238e0d56ce4d148a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IDAA21700121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c05326694de94ad44b1c4d10d123c7c0e510cffa2df02775b5c10edffbd67a. 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/IDAA21700122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e240ff5195aa916b8bec8832a533467b86f550fad818e4e32f51b58d4950454. 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/IDC309800152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0f6bddd8cd6be3c4ea8f75ac5e95c701845c70dd1b207c863c04e0975f4ac0. 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/IDC309800153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96069961c0045d5684a7af60fb783891a6aad597de60e895796100bfa0bdc8d1. 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/IDC309800155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfcd5f4fa54634ea19a632b55d5d3e6fe62cb8c4f86c0c8bf26c9d4d2790cc2. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/IDC309900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9fa2c122d0d1bed37393245bbebb32cddd081af66d04fc2fcb929189ead71a. 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/IDC309900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91edfcb0acd0163d25c08e6f847c3f00b634f98c2943178703d7d2d2b46bed70. 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/IDC309900135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe887e219b6a662840ffe2a358c9139851fa050da005a1996a0744413afc5a1d8. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/IDC309900137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a236b4dca83f036ef5f8eefb3e0f310d1266a284b3338ebf46c8a5421825e27. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/IDC309900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cb45c5cc84dff8b9d4c08348d1253d55a33d77403627f489ff63f4d4dc5e8d. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:37:33Z), 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/IDC309900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77b68f1549c2d4253fceb8df9b9e8d5d4bafb727e6e00b9476d28d35bee8c76. 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/IDC309900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104f986f17f4a04cdb5b9294eb44202e1b587eb9b3c50554cdc730e7f9fd8734. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/IDC309800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86533b265093045f398b8c627e6b6a614138021c0a6f4ba097ccdbd6d69b371d. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/IDC309800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d24bbb102879924aa989c6853a170b1e0fc352c979d21e6e68e2c69eabd8c3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:05:17Z), 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/IDC309800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebd3d6e0a8d011741c7c899c1d378c01cf0be8ca6f0a4095d5df8fb28f38b7a. 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/IDC300500221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb86f504e19f63597d18dea2eb37db648b32b9c5315e208708a959f5c49268ff. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/IDC300500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f47971544cac034326d94629a2e0ed694b6034e444e651837f32e01c0ec597. 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/IDC300500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad7cdde3a25addb48c403869d8bce35ba574e0f70f321c30e14bb35297aeead. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/IDC300500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926e626b98c831db5366f1b88c62069e3f1298dc32fcbe2fb4ed531df423f4ff. 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/IDC300500215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fa83dd6524a0eb343994665879409ace0a83e92c5becec06f7f1366f70155b. 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/IDC300000195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f919ab83fb92d54256ae2242120bfbb99318ece0d57bb6588052496491ff2a1. 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/IDC300000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d4f20ae6cbb12ead6d640a7b359ef806ad557e137257d5c59233e73d5a6775. 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/IDC300900243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b353274ca9dc1db0ab3a589b017aec3857a27913d06cbbb2ffa4c39cac1e7be. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/IDC300900244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b047b4ffd167ce29d52efa947eaeb9212a769d9bdc827a31338c0a2ec973489. 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/IDC300900245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a90700d6824d88de7d1848bc6ad4b37213028af655f4c24a4c3932c989ebc46. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:36:30Z), 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/IDC300900246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a10ca68c4d4acc1782dafde3f803aca0d3722ed639630442fe765e37ea9404. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:53:27Z), 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/IDC300900249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18469af5569b2ef0430464a29b2bfd144d1ca575862663063109580421e370ef. 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/IDAA21400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5aa9a80f8587a7e6f4a0d765b9d387657f6ff893d0317d1d879c69f52a31e4. 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/IDAA21400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264b97e510761b9c191cb113aa01ee60fdd07adade99a53dbf62319f7634ff1b. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:15:40Z), 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/IDAA21400106.