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 0x71061e441b9be9c188c44bf7311c60762dddc81bdf626faee940a2342e6bd27e. 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/e1584188-f2fd-4b35-a9d5-ff018721153d.json and https://artists.proofprofile.net/proofs/artist/e1584188-f2fd-4b35-a9d5-ff018721153d.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 0x107ed3529b1b9cf1d75929bdec4007da6344787e5580ec5c14a55c227cac62fc. 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/GBSMU5570358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d889e4d80439cc2b68fbe196bac51c970c0a6c7a77054b18f854a8e2082349. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GBSMU5570360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1829d6e41f982dbb8e55ce3789268a258ebb9cb0dbe9cfa13d0e4c8d010c83e4. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:04:26Z), 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/GBSMU5570361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42b0b9c8ca71bc6ff06600d45fa4187c733f7c46fb3ddb8962f6acfd953634a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:33:17Z), 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/GBSMU0053494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b1e82d24049ed1d7f0cf4d6605febf817856cf058239ab4f61740bf96c0ded. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:20Z), 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/GBSMU0053553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a1472603d8a02b8926d4f53798f927aa45e9dcb9fd3c45d28438a114700649. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:29:16Z), 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/GBSMU0053554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd26ffc928ee7bd50700220bebed582533dd54080cd6e6c2e57df5d3fbca374. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:45:30Z), 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/GBSMU0053634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ed12b86f04820308a9a48b47fdbaaa6bf0162e4f95d5b75b54772b597f3179. 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/GBSMU0053635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a9a02d4ac04f63d20b09f6ac008ca12e84001f72b1c08cadec7f11c0ac3753. 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/GBSMU0053636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8091dfd430272b50ec47c416a1a9a8a57b9ead6e474f56510f6879a0213ed18. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBSMU0053637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc4ca8d38ae9ca6f66f1d41bbe33cb8b1a36be381f0a1e743dcb8bf91a7e9b8. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GBSMU0053643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59b0b7453b6096f4bd6bfd71a668fdf794c7795ccd2096e7b94c96e7a7d535e. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:59:22Z), 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/GX8LE2396328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417d79562f7005c8d6de21226919477b294e6dcbf1d3000371fb4d303ae0cffc. 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/GX8LE2379091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a4038a960137eec5efd615e43add7a16d6a9b2a73b6d09bc1de0f232a12681. 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/GX8LE2357851.
Triptych of the Temptation of St. Anthony
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce004c297d574703ca07e7c6adc293c304314028c006224c32d0bced867c7af4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX89G2586608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1696299816058d3911934d9e46a60b103dd711c90fbe3923092312aa65dcd7d5. 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/GX89G2508356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0708ba1528b3004762ef7e87d258b32697c94c6693dff715e43eb4b83fc8d7ee. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX38U2507287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7994ad115664884173d77dddda6d469643967ed99c9d6106ee77a541f5bdb017. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:10Z), 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/GX38U2599705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f60f49de460be430860a23bd0b4620194e185c2f26632d80b3f9200884485f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/GX38U2519479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d897a34743aff3a6daf7b30597a8887abab2a9aa6554e58192e88aae5b9398. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GX5MX2501785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056d6ef85d1f01c5cd437f3229ae1801435d651194ccfc61967574c2f384acff. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX5MX2590240.