1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa39cc6eb2e49987b76a62a4104faa6cdc875453872abdb23f92cb22acfce4285. 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/e50dd7e3-f28d-40f7-a225-17a1ebf608de.json and https://artists.proofprofile.net/proofs/artist/e50dd7e3-f28d-40f7-a225-17a1ebf608de.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 → block OTSBitcoinBlock must exist at that height 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 0x1190d95b5d0fecd6be5514af628bcabd838157ea4142cdd0c91b97b5234d1892. 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/BAA052341842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18f4d3625ddfb96315383013b60e3b98adc5cb341052941961498c4335d494d. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/DEKB72428480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2916963ea1c329f9d72cc802b13a76f7a73516303d39ed5e6a1fe07fc2e819b1. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/DEKB72428915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e2162182ffbeb54af12d0999c12ec29c89d798446a012f67c1cbe39cd4f868. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/DEKB72442669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63428a6662a594e829e6cfe80c9257e11e859087cc242a776e93f464d11be601. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEKB72442675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25eb142f401390e8a4d6831e6c442b7635133b6e018abe04988854cfd5abcc60. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/DEKB72442716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbfec70ee8d48d1da03cdd095022bfab4944537fbbeedc5253bf57f6d68cc25. 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/DEKB72442719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09b87dec87099b54a0a20cc9a12d106a7244666cdd21819a3767201679eac5b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:32:25Z), 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/DEKB72442720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cd2fd63a07ae445778385eff8809bb10d430b0c9a29bc981eaa940721ef3bb. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:15Z), 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/DEKB72442722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87d5012ad79009f36f6e9a260b0ee57b0c1430daf165726368524c760cb4677. 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/DEKB72442723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e3e19f42fa1ab9840b67d64ddcc15265375d398133a48894a59b45cfd32ee1. 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/DEKB72442724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ac3ccfa73c0f99eae8b89780e1727089a486dffdec6cf7c18c96125828becd. 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/DEKB72442725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b188a5b5b510c49fd6135d855b060dc43b4dd2a1a098a5b8c854befdedb69c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/DEKB72442727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e382dbfae90cca09094e4adadaad22053e4cd95038676419e506702ac345854. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DEKB72442417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d4ef4c3af78ea865899921a5ee59f7df41a7f2a43f215b7054d5bc63276deb. 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/DEKB72442419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554cf473ba02c3f7db17a59324596da5d6e4d7e5f9d7af39485c6dc032e5b8d3. 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/DEKB72442423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1c1686e07e952260eb7b17b596b00a199a760589ea37f77b64d029e7579673. 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/DEKB72442424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901cf7047cf85cb3906ce2801c7d34745d93de1ffa8060faa24ec65125af278c. 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/DEKB72442425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fc6ad72a39b085c40282e89e1e2bda91d4a5b81d77e66d06edfa66bf595c57. 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/DEKB72442428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff8da2fba2aa90acad1aaec24ea2b5bc565e94ee78fa702c3b86729539a06f8. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:24:39Z), 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/DEKB72442430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddfe162dfd5fb1d12e371469c3546ee662ebde2c62cc93e4f958113be02845e. 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/DEKB72442432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85224801825e3e313f1c11924f803a44a0eb9528436bb0e1f846bbac5df3e90. 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/DEKB72442434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77325360bf78af3f1aa91ec2063fea9a7c7fef803b3ae194f05f3f9b2fead80d. 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/DEKB72516534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b48a535261f9c19042f5994453fed7060d4da9b4eeeeef0b05a6fcb7ec04fb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEKB72517168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da9b7685758c9611e8b6360be068d7914dc0cc921eb29d1176c39a79ba339b0. 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/DEKB72517172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67566df86c3c95fa1a95b22d82f9f86d23b217a9bfd7a9986088dcc4bbf081e. 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/DEKB72529164.