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 0x528206c59bf832f35732e27de1c69f2931c86b18da38b715cab36c0a5b1f432c. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bed74b14-11bd-48f8-b6fa-42df45fd91ae.json and https://artists.proofprofile.net/proofs/artist/bed74b14-11bd-48f8-b6fa-42df45fd91ae.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 0x1cfc7b06b3b44781314306ea4220a76c1cc0436fcdfff3d4167b2f35bfd5faa1. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/KRD581800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba51f6bf9e468de837c26f71cfc80e11164001c467aaa87172296436f3126bbc. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/KRD581800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a1224ae8eb40677fe2a72e849923b32f66a71eea326e6c069125a90b19c099. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/KRD581800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39e9e4e9483014650ffdef35b715e5f5ab211435aa89df604f943b34c6273f4. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:49:20Z), 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/KRD581800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe645120ba83649969ce6e2811b0c3fa1fd5de35f18d712a85bda3d2313201509. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:59:02Z), 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/KRD581800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5796ef462cf7a481129b8c99c03970856df1060b48bcf74442baaae2fd9726. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/KRD581800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c46079fc5cae4a30f9d4ec805af1ff8b85ab13e0358aa36522f1bf03a6dbffb. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:48:26Z), 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/KRD581800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b520bc37ab3ea45275bf62912ae982840b18faac9096f475c8fec4e4b6e6e8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:28:55Z), 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/KRD581800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5e0944275fb5732527381cf330470f8eb07ff76673c9f032a7723b04bb4321. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:51:51Z), 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/KRD581800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264a297d872007f42a64272f631c51c3f797a3fed49117045a4aa0c14fa62579. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/KRD581800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649931037384a6aba099f60d7485afa4cf0eb8aed21e23c75eb4e0e8f39cbf1e. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/KRD581800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb8e56ffce4201af6469a22deb2b4282952824f41e939b71992557ca3a6012c. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:35:28Z), 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/KRD581800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049c22309630df8e9a7f53be80976f34ec9d258a9644b228d3b790c39894760a. 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/KRD581800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab75cef77f0ebaca4700ff10c3d26c5415efd53fd074e3aae9b00c5512ea5096. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:11:48Z), 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/KRD581800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f318b034c20e11574d5c8cdc56e103d50211815897fdc63191545fb396cd20. 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/KRD581800022.