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 0x0b942a416da73457134e71ab75e00436bda19cc30de68d9319482bc15d4e68e9. 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/099f9bc9-2ca1-45e6-b40a-9210a7d83379.json and https://artists.proofprofile.net/proofs/artist/099f9bc9-2ca1-45e6-b40a-9210a7d83379.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 0xc6adc12f4fecd6831b6a8def48928b66f4f36a9eb1bf48cfc7f3cbffd910dc21. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXKG22302821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72701a9f0e773a5b52f735d84d799966e11316a5a0f2cab26309ebac6735d60a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXKG22302374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68719fd1b6ebcd97827bd0c8c6a59a2ca5438a00fddc015b4cf17ee70eec6fc9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXKG22302486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe082ff6381b26ba735541d76706e8327c8a486a97114659e6f3d441f53d471. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXKG22301475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9b6c76542512d078598e5cd2ef63072d55c93d96caf3721586e979c15e2c0c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXKG22201279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d88d3a670025c255052d9ce86341c4f4d8e5971d165ed35ed2ca07a4ac7c7d3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXKG22101252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4324a170f615abadb63c5227b6b2ab588c1aed4be51a9c74c0f0f7586ca51c00. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXKG22000286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a537957804d8950264fac868c858d8b1439eef9d5da802a95aa9bf5bd66dee. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRAPI2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cdfafd4178eae3ddaf25569dff7f4f88a1060bc761a41c4ce46998f32e92cf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCJBI2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcab3ae10a4bc735810cb569537c96a26f3b896bda7ab9d4da35229a03b250e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCBS22000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0062a2e38fcbfdf689eeda0e418f0e8c701eb4c6ecadaa0b58470bccd3a8d2a9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXKG22302793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02ebe2719dfeafdd1c2cfe3ad5c44130c843ddb52b74929da9a519c45ce582f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRWMB2400534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6370294885f8d068fbb6e17319699b3f6a4c1f8aa66a4683806451af0fd146. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXKG22302544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8904dd68430d326282d1633bc2c47f3462627f93aa16787d8e95dc320e511022. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXKG22401803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b17e821b917459f142b2b68388f4290c014147750a3e3bc48ace604e225812. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXKG22401616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e1eb7e46af670f5ee54817dc563519870df61167185845b13ac77f5271f941. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXKG22302119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa369a087410f9e310fb47cb28de8e6924c7bb7fd4fb569c90f98d55cca0f0d18. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRWMB2300635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e0eb0f63bd84b804c51cb436006258d7e7103fcd5d2beb15b523aa3389a81b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCSOR2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bc56b6410ae0526d44916c0473688f48270d6d48baee14be8a87d9b7a72556. 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/BXKG22402642.