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 0x2266879b579b74897fd7daf951a32044ab3e1566a861278b78aaa9222194b72a. 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/2b8dd419-8383-4534-b4b4-9af8db74221f.json and https://artists.proofprofile.net/proofs/artist/2b8dd419-8383-4534-b4b4-9af8db74221f.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 0x5d0648541555a0bbc2ec6f98916f6b878f18d0b9b139d723285aa59910fc2201. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:49:05Z), 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/USL4R1823544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315486626ec9d34e4efd8d2d2cfd09657afdf3f65b4cb8cce0f17d41e864bb62. 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/USL4R1823545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0648541555a0bbc2ec6f98916f6b878f18d0b9b139d723285aa59910fc2201. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USL4R1823544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315486626ec9d34e4efd8d2d2cfd09657afdf3f65b4cb8cce0f17d41e864bb62. 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/USL4R1823545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6040515f1638aae1f13e90c65634119e0d3be3363a6bc64b41ce57e42d6beea5. 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/USL4R1823548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe1708fda8d72cf56c818b8775d2b953966b38612dbb71d79fa10f775672258. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USHM22093856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a14adc02875a849914ff7d8bdf9d600cbba16f66e7bef5b3ca32a0a3c9d5e8. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USHM92109576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4467d944b4773374f5705c60459955a2fc6737de8ad6d6bbf7a15d43536a0601. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:28:34Z), 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/USL4Q2136515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe1708fda8d72cf56c818b8775d2b953966b38612dbb71d79fa10f775672258. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:46:12Z), 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/USHM22093856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4467d944b4773374f5705c60459955a2fc6737de8ad6d6bbf7a15d43536a0601. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:44:33Z), 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/USL4Q2136515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a14adc02875a849914ff7d8bdf9d600cbba16f66e7bef5b3ca32a0a3c9d5e8. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USHM92109576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c007ed3872391b0fa6615a57fad9c0d0dfc42f216afcab0ab8acb6035c6fb0. 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/USCGJ2321936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50707d556c164807e1509259ae82ba96d28cfcc0958ffeed74f8dd4b0d6a791d. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:09:47Z), 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/USCGH2428338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c007ed3872391b0fa6615a57fad9c0d0dfc42f216afcab0ab8acb6035c6fb0. 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/USCGJ2321936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50713ee784b6409807bbe9540e552729e6060d6d5a8495a2efa9f803eea2ced1. 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/USCGH2428339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1793c7bb8eb31f0d00dfac45023b25b4ef6d3cfce563a10259ae800afd58da. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:23Z), 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/USHM22394560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9e8575af0345c5c1690becbe3c54d22c75b2eee9f1d6d90cff9393b2a3f86c. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/USL4R2311784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4bd0db70550121956fce96702d60024e06e397882f4d04d3218724c191930e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:41:19Z), 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/USCGH2428343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f991cc84d8dd30ac2bd0a76684bbc5e9b0e0554fae39ab0a5fcbe17512cc64. 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/USX9P2491793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e3c322492d923cc03c13300ef625073a619632595c25003d68be09099afd68. 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/USDY42599583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0aec7d98b007ab90c3cb86bc510e4aca32f66d496e2ee3598dc816b0522ff1. 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/GXHAF2559776.