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 0x026b8f047bec9270ceca489085f063027e1c9fb072dbb988d3325bb7c4a986da. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e59aeb8-0bbf-4bdc-8512-531dfd489f44.json and https://artists.proofprofile.net/proofs/artist/5e59aeb8-0bbf-4bdc-8512-531dfd489f44.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 0x1697a0b86f546d72d4436138a3d95ca9ad63ccd5012e80468a970a64842c54ed. 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/RUA1H2322238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd540b3e9efa9d1cb9f0c825c7cfc0b631aea6240f52d40fd6652f510c10a84ce. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:02:57Z), 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/RUA1H2322239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffca3262f0b2ee2660d6c6ce0835030dcccdccd74314a304459f34a43b4ea04. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/RUA1H2322240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9ce2df6b0b08a1d426c1672c2fd4a63c6f5b980c9c46ec196a6d718672e8cf. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:37:18Z), 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/RUA1H2322241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eded5c0447bb27c184b0a420dad82877b885d5990babff2f021be8fa02c0941. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/RUA1H2322242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4db20534707d09eade18a45e6c32994190a7e1eb4eb50bc01bace6622a0f1c. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/RUA1H2322243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528a8443c0fa8024543d8e35b250f94da737935e0644c584ec7d92664e48065e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/RUA1H2322244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434f7a0869fd3fdde862a2995368dbe26bee5d9be975274cdce7842705506c2e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/RUA1H2322245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862a3f1525f6b9ebd176e0b753c60e87cd31e21507c57dfe1767ecd8c74a99c9. 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/RUA1H2322246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03be86e8ee2e3cdb6cbf98b9ca6ac2c8fb01a4371671ce4c4a95abfdc274e64f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA1H2322247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347460398edaeb9334b7a4659ab8eb54449d339e840657d5925d9e6f54881b65. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:03:18Z), 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/RUA1H2322249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a92e5b8f76da4a474813bb810819b385fe2fa6e370d1f61dec119c05e7bfc9c. 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/AEA2M2356706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecfbf6cecc4efbed8ed698874d6f306acf19ecb5b02c2bd1028355c3d45207c. 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/AEA2M2356709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacf2f53bb566514398300091a6bbb4bd2ec3aa90506b32aa58cd34e224e32f1. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/AEA2M2356710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00aa3e0aec7ad41ba4d934eb3efe654b5894eee63dcff353aee05d19687724b1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:04:25Z), 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/AEA2M2356712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f568e23a218dd2c546a18fceeb15c18d80a220424f9cdfe0362c72f587f8c9. 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/AEA2M2356714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dae410bb3dc4672eea9c84387d15249ae94eaedf0618fdddb8d24197f49002. 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/AEA2M2356715.