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 0xef279bb65460b0d578e27c7d224e3befa63c28e91933a5e062c1b7564885aee2. 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/b277d5f4-7707-4497-9165-abcf3c87905f.json and https://artists.proofprofile.net/proofs/artist/b277d5f4-7707-4497-9165-abcf3c87905f.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 0x68a162b1d42046ef7526b22cda563b06777acc67a238d88ad8224af5ad57b22f. 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/GB8MX1500426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387b70334f232299197a99408111d0a8ec41e45d005c85fe3994fd42f7c7c318. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GB8MX1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbac88b4d61e27b0d5ec16180523839b175f2299701cd6fe38563863fbd857d9. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GB8MX1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dc07b92cac3a8fc165fc54c5c866cfde82eb35718b0d5c15b81633970ec434. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GB8MX1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f6e4f5497ccc990ac9d680f3546b65fe73eb30d566503af01864031f160f49. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GB8MX1800071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0afea6825646472ed337f0a05cd742cbd55ebd1249b364f9cdf14df213df60. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/UKRBV2000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30c596cdf043f1742719d3d851deebd2209b6a3a5a20a2f81371c1b93b8f9c0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:48:23Z), 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/QM4TX2418127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7eebe85934f63ce25715482f3d59d5eea9903e6851dc1703f976381df54c720. 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/QM6MZ2436003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae159fe8fbb6cf0da6f089fd070cf8554d8d150975b14304914ea5bfdad4c06. 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/QMDA62461109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ed71b51e59fba4bfbb3af3542bf7ebc66e9ac370c8622ca4c795961bafffd0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMFME2428614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7228bc28c73b98f0c22d9cca1feaa82663ad661025bc45b2ca16d9c3b1b28f8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:06:15Z), 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/QM7282475033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768e0b8a29776c6e256d92e955a9c8b39957e285ff1056a73c68771a32e63aa6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QMFME2428613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6faa8ff250e89165bc3e2d697444a949884009e929d326547f218eb365cc0d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFME2428612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c1fd962775e66525ff58cd8fd2d1f93b537674f3a61e07f4ed2424a0aa7410. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMFME2428610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352e21ca8d93199477f1ca3e9bdcbc33ba7bec1fa992531f225d8c54a4aa28f5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QMFME2428611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3139a809235e58b6030a15d10316ae45c70a7091e039fa975376c093c5ba51b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM4TX2588794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3139a809235e58b6030a15d10316ae45c70a7091e039fa975376c093c5ba51b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM4TX2588794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a605beae9ec31be4f2ff892f1bea7133ffcda7c8ab98d7f9c5d05b3bbcd97a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMFME2512149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962a5e478f8b8b8d7b69eb136d5b9489db8a59d201622193858ff0b397614836. 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/QMFME2512168.