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 0x1ca70958334e172cb585d7fab98d081fa69501d550d26da0bfb37837eb4cf00c. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49d94eff-f913-4a1a-b911-7d786e935a83.json and https://artists.proofprofile.net/proofs/artist/49d94eff-f913-4a1a-b911-7d786e935a83.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 0x6fb49c755943c317a9bc81969df4aaff16a26a289261db2eb0436ea60c940d62. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKZGC2405113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593e426c5ec9e835e25239b9c46807e6fc491f5fd797ac83f63fea3b63c605a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKZGC2404566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6792ccd0bbcdeb443947776f0754a44b836a271fcc2abc45c7b350a9751a7c7. 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/UKZGC2402637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52110facb9d42305e8761ff3c5b167a394733418347ac1ff0c40d9401df00513. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKZGC2402640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f0818b41510c6995bd24d933544e18ab8392136e6c38e7dc8abc452d5264b6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKZGC2402630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae1b369ce5d99a307f81b5b027a710e233f87fdc58dd33b6fb67b3d9431d75a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKZGC2402631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1153e357b47537cf7cb44ef82441d0fc0a7c0b5a1ae8f068d40cce730f5f73a8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKZGC2401828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326dce0dc81226d714e3f463d4f60e2e3c482ff538f6e134fe8e1405aea707d7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKZGC2401831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd188b0c2ceebef1b462e2a84f0e9fa60672bab37e87a3cfd1e8c4c027087e602. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKZGC2401832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92442f26ac5017a2a6be2ff738153ca95812de4b5451a8fd498d8b9c542ce8a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKZGC2401834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650b372562415ab5b983c42c0f44bf6e4fcde7a555f8d5cc580c2a3a5c207a7a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKZGC2401835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024dad57bf7c9eb039bdcd3b48cf98140db96974af9e14c06e58491b38b6aa51. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKZGC2401814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aff240a6fbfc914a37353c88087b8877751aadbb6c3b675330a68f0004bfcef. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKZGC2401817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2744b266ad6148093e3d3be77450a7f22c60de84d11e3901f91e3366cf9e4267. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKZGC2400862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab03b9f657709d3ddcc14e97e6389ff3730e03f67e733e9d19fbc43f79b1e86. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKZGC2400866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818a500d271fb200a1c4b6a2c4a87c0bbacb5ed41d7a75edd508363e6a02a765. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T17:01:42Z), 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/UKZGC2400864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fce12cc10514a19c98a1b412a1ff79138d8c71ebc6930f87a7ff5ed638cf681. 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/UKZGC2400868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30f20025b98f0462d38ce4084e7d7bc7ddca52bb1b35119cb2e3fa1eba0c179. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKZGC2400869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08186bd9cc1121bf33762d8a0ec3ecb03e1357b3a83e80e0f42cde8afaa18b07. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/UKZGC2400871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d7c322348947ea3c38787cc05ad0f911c58204249e726b11aee8ad03a5154b. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/UKZGC2400874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9c38e8ffe4ede5b5deeb87fa0243debca106e89ba2b169738c6aefdeadba4a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZS7J2352753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd18f01bea6218163d12fbacf0c2f348072c18e3879fbcce3c89363f0f0f3d4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZS7J2301677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fa68555afcf19b61ea5a2a60e4b10dffc9996ee7beaab0df7936d7b3a8a216. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZSYP2367767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fa68555afcf19b61ea5a2a60e4b10dffc9996ee7beaab0df7936d7b3a8a216. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZSYP2367767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eed6a20ea6ec86426ca3546942caa65cc170f96f337260f3c9670d71f63bd58. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZS7J2302040.