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 0xf9e59b330c60f97e60524cec14b0ed93419ff00ebc75ad0e2754e87a414275bf. 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/76cd1eea-8923-4e68-8215-0ce350c91675.json and https://artists.proofprofile.net/proofs/artist/76cd1eea-8923-4e68-8215-0ce350c91675.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 0xf5f2d29f23d4e39d35580a1bcfa3ef76e1f7e4235dc22c17df2ed53dcef2f8d6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAEH1926797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21bb4a26eea8111d122656a3fb700d7aa87ab952b74de3efd794075db592dde. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAFQ2134595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2392ef2b98e8edb93915793d913744e6c4585346cf7b2de4978c970e4782e1. 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/TCAFS2163776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc352729d6ce6850c77d91c50f4c8a71e5bb875e308113fc420264e427ed3c7c6. 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/TCAFS2163783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e154a96035597878059d4ed298f7490045802ced14182a1c21cdcbf8059a4b. 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/TCAFS2163793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c44c08a42ff1a22be6b45ee1e9f3b13f7cf140bf677645913809f01e21cbf4a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAFS2163818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a6d0f78243f64ebf53c33418bc7f39480c253ac4fd49ab477c9f56272db4f7. 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/TCAFS2163857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc4a428b76eb81867ad4e011a7683619c07d309d155bececdde6fc8382e5675. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZFZ42253537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9ef94de2727879789bbc706a62cada5d511bf2e02493a5957eb3d961e26648. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:52:40Z), 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/QZFZ42253539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d0e0f4d4e36b003010f81a49c86d94602cab8ed96b21e49a5b15b57498f143. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZFZ32381404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eb379e8118aa6eb35bcf45fe3c833da036ef43e4ab5b96164adcbb70bc10dd. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZFYY2300831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b37bda32a345a97d760e068c3dec07b0dfbd3ef5c961a0f9d1b2e82ddbde601. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZDA62394118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d70ae8f067f6dcfe161b4963b5fe4f482204bbedb70c02b7e2f20b1054ae28. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:16:50Z), 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/QZNWQ2324830.
Revival (The Introvert Chronicles, Pt. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7110b8b51fa755284e535aad8df8ae990b4bf7563d8e7b2f482da88c80bfdc3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZMEQ2450452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8de2946e49a2705df22fed24283eead564ab0a961159de2c300c086c904772. 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/QZTB32449062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7d8b8f7e136edbafec8b200d6ecc4c97f01083bd2911d38abc408ea320b02c. 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/QZES62512355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a511568fbe06deb3bd47a0ad2343d3b47485ce0ed8204ab4ec00b1956d601f. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZES62516707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e31239a2078beb99a45245aa0e683c6e6ea7830bd75484654e6a1a42e0c919d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZWFL2557376.