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 0xf1ee768f9551ce55567e16cea39291fc637ca4bc469173c537633a19e26af50f. 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/82db3389-468d-4f11-8916-1752b02e943e.json and https://artists.proofprofile.net/proofs/artist/82db3389-468d-4f11-8916-1752b02e943e.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 0x9240cd0e53e85bf3eef99afd50c782ef32f5c9963fb275d933f89c8f01382bb0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USLD90809386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607426b331fba7052e3e42d2059c7df5f7b3a634dfd6d24c73961bb6ad78dcfc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USLD90809391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44432a3988901f4b1993855275a8cbf17ade2f6aa6f868fe1de4a1de52c8f15d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:43:47Z), 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/USLD90810481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a44ffef02a5410a95f9641b50b7b4c84acd51a4a9cf2d6c75601ebbd3b3bcd. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:16:00Z), 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/USLD90814233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9496b407b8cdf1c13eddc117f331f2a1fe3462d9231060e018471a9b80932f5. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USLD91711373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b89daf0ddc91b9f240637bd3f502341968a1558796769d9e6128257f7a9a76. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USLD91717269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2034f644eebe799d1fa70dd6915bd145eac0bdf0b800808fe91d3fe92e031c0e. 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/USLD91729077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d4eb38b134ce046e1426b9352b5eab0abfa56c05b6f5050100774b4a1f5a91. 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/USLD91729078.
Choices, Chances & Changes (Deluxe Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33dc3eb14aaf910fa3a8f0b263975feeffb5e2d2f0574e91aa1beb6358e94a1. 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/USLD91730685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd01756878c7e90a3abbaf9ef094e7c714b54a0e47983fb32102633f54c4dc41. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USLD91735965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0992d744ad4f55820517692c739921c359157772d569ae76ff22d5d08d97fc. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:18:54Z), 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/USLD91735966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6780ea7a6ce877cf133a78fb24e3ec0ba7ab388a2933e6abd04b2143c6a1aee. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USLD91735970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2e438cf6a460276ad2687aaed7a68e342e28c71f3be2e2a1d03428d8555951. 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/USLD91738454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902347706514b7cd58033dcd1b495eee443f40806e0beb40ed8446ff3d3ef824. 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/USLD91740830.