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 0xb946528663189d0588d0d82178fa30029ac201a93304b97484054633efeaa82b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b323c56-3b22-41ed-9239-db86bf6389b0.json and https://artists.proofprofile.net/proofs/artist/3b323c56-3b22-41ed-9239-db86bf6389b0.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 0x9100147a7bcdcb6a70a5cddda957313adeb1475b86771bc55cd72d1d8a61125a. 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/CH7811115070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4316c1baf7732d9459af5ed2bb45a112b1d538daa4ffcad2888af06fa4d32d68. 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/CH7811115055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd504030aa18e4984ae4bdd27eb38412d50830df18f850f71f2514c035a10b919. 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/CH7811115081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f98ce7a730b0a4c63030554429d6b878c3172d4c5e44c5e1a8089829947b34. 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/CH7811115074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1708248589f0843d69d95d67a4a9bd139dd1b31e10f8690de15917b0a25e8af. 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/CH7811115078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6354d3ec5d5717ad4eae27c30ce7e1b69cf5b5283bd8d48bb68734d1198cda91. 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/CH7811115086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1fedab7b2d70d102eb957ef28aa62c4aa1c8238ebb0ac2fa150cde94138fb5. 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/CH7811115093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123e6b0d83dc21f2cd9d656f544e717088d265e4ca12cb814893839d7fef93f3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/CH7811115076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7302178c7caab18eec0a805ded3d5f65a97697dd0d6f82d01cd6ced50ebf89cf. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/CH7811115077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1708248589f0843d69d95d67a4a9bd139dd1b31e10f8690de15917b0a25e8af. 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/CH7811115078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d07675b7e4ca265069082d81383533da0ea5537c77945e36abff45c67e038a0. 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/CH7811115079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6c67482a9dfe510d26e1d138ae51ebccd2898dcde958763e94d275b446be98. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/CH7811115082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ed3dce4662e1a17b0715e610d89ce69b1e0dbcae082cbf5e43fe76489d6aea. 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/CH7811115084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9100147a7bcdcb6a70a5cddda957313adeb1475b86771bc55cd72d1d8a61125a. 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/CH7811115070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62eea2a4d625a2194eebd7db917e86f76c8567b82e46b12b51482afb225428be. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/CH7811115090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f5ea46d83e68c3d1491fbe4d5d789dca15b908a36566632ac42480fd950d03. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/CH7811115091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6354d3ec5d5717ad4eae27c30ce7e1b69cf5b5283bd8d48bb68734d1198cda91. 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/CH7811115086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d07675b7e4ca265069082d81383533da0ea5537c77945e36abff45c67e038a0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CH7811115079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d382f39ac554e32a1dc4120b18242f800e02dcf422de72cd9206f2410109bd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:32:58Z), 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/CH7811115080.