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 0xadc21d4a77947209399f8b40c7525014e9be27a31e762437df0bb8fc9213e1bd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19052913-a16e-472f-9ce9-2f978ee1f416.json and https://artists.proofprofile.net/proofs/artist/19052913-a16e-472f-9ce9-2f978ee1f416.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 0x7f9697b8fb8686463be2aa5eec06791ce380b55d0597232ee7fd82f510e12af9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX452423988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62977a6221b6f9cbf59983d9e1b78012423a7c05b03ec7b99fd4cd67221b0513. 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/FRX452423992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05f9bd8dbde8a7252975d0c66770cdd54a0832638f9b1966d1c784ed39f71b2. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/FRX452423993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c88322e5b18533bb58c57e3ee55179b10368dcd2d8d925de38510b8f699a64. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:33Z), 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/FRX452423996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08d2ebc1c0da96f2f5446b8a83222def7acb53e17de848dfb15fa0973ca5e57. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:09:20Z), 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/FRX452423997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd503906d45bb1f42b97b5ba6de837a37074c80122f06d8c5f7ac186072bc5ec. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FRX452423998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0c977d6a74789cefc956c75b1ca9b2b1fe1ea72486c45be8dc9bcaf04f1133. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/FRX452424007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347dafefaba1f807b034fb0f24c9d2c510a3b0009e53a186ffe9c43768169e95. 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/EGA0S2407330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27e297777cebc89d4d43dcfe4aa6ca61a60e856f1881b50ef20ee17990edecf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/EGA0S2408407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45648a499ece00a83ac2dda5ab94fbc15598984d1f81495d35572f3e6305419d. 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/DGA0H2413463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab22ea35615a1759f8133005d35cee79aa7297a34a83686bbfb5d3be29b2f2f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DGA0H2413469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cbf885b39cc78116009fd6366749f41ae989da6b2998e1f21b327eeb84165c. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DGA0Q2427856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ea8e0c02638c8da78fc0ff343ab9be80a92d788d253e9fd1c9d7b1a32ddcdc. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:30:26Z), 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/DGA0S2420954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb51828b7056540010b6d15c993ca623f080a5d1609025d234891f0e90393ee0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR59R2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9f929b384a3930ea599b6464955a4c23d04db4cfe4fd8d9e05a37113526388. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX282558395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c31355218a3d0d2cc124e4ff6c93c400741e0fd54bfa5caa95b95bd4271760. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/DGA052571024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b125b4b9a2c21f6f7dcd596815dbfde462dc67861aa8c144be7b3003842ec6. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/DGA062564205.