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 0x575bd0c94a3ddf65ee025d2286b77d908869c32637d87712c09378bc290dca7f. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16b3255f-ffa3-495d-a503-c6e02975dc14.json and https://artists.proofprofile.net/proofs/artist/16b3255f-ffa3-495d-a503-c6e02975dc14.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 0x19675187478aaf6c8f52936c12dba592af6ab62d2b34f347674bd8a9ce3d6058. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:48:43Z), 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/QZMEM2298350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea43648cde45df1c1f9aa3e8974e0329a9bbc82636b92c81bb7151095e010ec5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMEM2298353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421b86d6323183387712d4c52d1f9bdd90f26b116b850f8883a6ce9805ec5604. 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/QZMEM2298354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4b16850c891b1b7bd1525082f996d417bc87e66f7c1de19df127a0e75f5e57. 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/QZMEM2298355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad8d1d5f85cd08896f68e03e50a86ca007d40ca9c9ffa0568efca7d7aa67eea. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA42383655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0709b05056e494a8eaf143b882871e8b82abb8f244a1c4a901fa3a72cbfab6. 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/QZDA42383656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f450b68dc7d9b3718c9ccdbe20e9b26be3e996399b07fdcc8698be72795b9e5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA42383657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c50f4ff66de559b47f5212092acf45cb1bd40eeacae6543d6d56b547273ef9f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZDA42383660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5c491e660bbda5286f60856dd18b8834553e461f9fbe4a1c0d17b17b6cef31. 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/QZWFN2351509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30157915e886ffcee273fedaa22447c2fbff5d13102e606b378dca65931f4d52. 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/QZWFN2351511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996e359c1a190b9e562de47f811ac498e1bdb925573d0f9a9131597c74362081. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:46:39Z), 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/QZWFN2351512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce268e2c71d84f3b4b1a86a6a8e4904d5fc629955e154493244fb1c40bbb75c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZWFN2351513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dff38e27d46cb2cdbb1488bbe99079363286c7bc735675ab47aafef86b1b0f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFN2351514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a3182106302ed465081f398c45e3b018cf3af0de68367049710014e1d67c4d. 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/QZFYY2548783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e20e2c354b239599e5ba4008a789b7c76e869d589b27ce985126748f4eb5de7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFYY2548784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe972028736128f1d4f107cbaa879b7b7e173210fb7a4106680313667d51751d3. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZFYY2548785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c35ad43dda3e368f03c18d31ca4791bd77ba42c15edad133da2d7e32e9e68b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:50:41Z), 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/QZFYY2548786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd053e6dd45eb7e24286a50277804ab5bdd308cce36ab0cbdf851c92a300592. 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/QZFYY2548787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09d1d3f36fa381a73d93cb84eb674ca87402b1c79ad644303caa2f0e6c72927. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZFYY2548788.