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 0xe0081035f33f15605fb168edbc1794d6a26e4dde6045b1f0fde92d16809b40dc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/657333cb-f357-4211-b42c-3db2e747cf44.json and https://artists.proofprofile.net/proofs/artist/657333cb-f357-4211-b42c-3db2e747cf44.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 0xe5feb6637735928db52c711f495c3049f22dfa8e939988d09ffee98a1edac3e1. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZGWX2210234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa2f7db2a16670c4a07f7df38e9df6ebfe6e8ee902e440a7669eed97d0e4cae. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZGWX2210236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43563b7594e78ca0130ab54406fc74de8af8a9e2dbd0ba6bc961fb56812f0a79. 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/QZGWX2210238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb332a994c7627636987ddc676da899dcc332becfc524b068bdca05ea3caacf92. 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/QZPJ32152696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bc5b9cb0ad394bb283373be9d6b9f5c45f594c0b4ae711f5113420204af33b. 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/QMBZ92285096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f9e0c3024ae621b30e4ae83dcd40952a0f161fef618fffdd64999476c05879. 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/QMDA62276813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ed9f53caaf36e86a85252b514d6a68194a6adc4545c57eaf8ce857ce21db64. 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/QM4TW2304486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfd436a31e8d21df0b02947b9df2307b903ba3714e5c96b54e522182439fbaf. 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/QM4TW2304506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d069f0ed948bfc65fd980f181cdecf79f031aa32ad7cc7c49524cd9efd2bac. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:13:57Z), 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/QM4TW2304523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743bdca1c54fa6f680b72e11f703acb4d5b5130e1baf5c50dbdaaa14141b8556. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QM4TW2304548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be7ee9fa50094fb4faf355c8dfee5d4511c567d0d7942608d410c5a07c4826a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/NL4WT2300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fd216886801d1ce12941bb38a196c55e047c0f88b465896902d7760f5447c7. 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/NL4WT2300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436c01125986bb99713897b8a6945eff4e2ddf3eaad134ab385291fa2aed5dd8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AUGBT2303883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1bef0176e6f2b9b89594f6ba7b15898336e76ff173178d6d7bf73d10826d1e. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/NL4WT2300276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c51a5d41cb68d3a4471e99f99dd570e4f3b4e7fb8da9a9b8b6d5a67b98d5b4d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/AUGBT2321719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e06527e6f79889a870ffa24f4a8487a1793e8b9537546b0a097dfa1c005de60. 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/AUGBT2335952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c84b0eb732b8208dd66a392d261841f29023629b7f3d7eb374c730f9d88aea. 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/AUGBT2335954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fdaa0319cfc514c543e4f6d3261e7e6c7a786a89a2c55d3a8beb05c06386f5. 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/AUGBT2335955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1a865253cea6fa94b0f2555ca08f0f5f401da8bf87ee663a9f7e7be9e45a93. 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/QM6N22408365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ccf5284efe7fb99cbc351e25cf1231dda038fa8f17dc2d32bc5579832e6e7d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:01:29Z), 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/SE69N2500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fd411806d95a85b00dc895da579793d4b0227e56786b431c870167d56eff59. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:01:40Z), 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/QM7282531113.