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 0x807ae4dc9cf556f80ce5121650545a7609b265ab5644367113ef505f49bdb433. 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/e6406bec-80a0-430a-babe-bdd2eb261e32.json and https://artists.proofprofile.net/proofs/artist/e6406bec-80a0-430a-babe-bdd2eb261e32.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 0x32f0b7069ee966d157544a782aa69041336552ecc16da2a84f065c3fd71200b7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZHNC2005345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2429fb9562a24f568bd5af77be1bc530b6d98e9d4be509f980f0fe0819c33231. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZMEM2013898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36d547ca6412c852c6f7f80a83d1fc3e1e050fba47aba11ef7558219852de50. 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/QZFYY2172061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d9d9dc84fd8b3fcd1223571265a3c9b6ead336a15e76fb0fb609dc47c80436. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:53:11Z), 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/QZHN62160995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d1cefa8d92f704a40ac85a7e0ffee4bf9518f8ba420cd4b764675e071cae52. 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/QZHN82110923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bae32c01cf27f0d72f5ad1dd398b57a958968b84a1d089107f748b9b9aeae7. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:34:59Z), 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/QZES92287664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5a7524537b397de77170bc14dc592d6e7af02e8fcc4a3de4476417dc4854e3. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZHN32274060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d05fdee3559ed67c31c5d44698bff088de6cacf956449e6c22c8875bda6389f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTB72267947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad1e178d62497b9a7dbdd9b16957547c5af1eb6126ab16bb2bef2a73caac2b5. 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/TCAIJ2487600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b581f1404cf924fdc65b63a8decc3ebaa1e742db274c6a48b708f43f7d5940e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAIU2412519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50980aca62020d3f9e542e218c4493ea1bb30ad587322723e6304318763d635a. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:18:25Z), 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/TCAIV2443247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab80ae133634ee11a299ccfb879a3553e5257bb1660f96c2be954f34f72ae026. 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/TCAJA2491261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2465ac0abd177b06ba06c8491985619f877ce73bcfa4cdbf31bbcc46a8163b59. 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/TCAJE2536200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099b1bef8e7ca7e13ab5e3d1392058d3d9322aea0a4795229ef649375e68078c. 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/TCAJB2416994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cbd3601a9fa6dbe5a04502e6aa050b405b29be60f52137406029b302e4af47. 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/TCAJV2564466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec06d8a70aa1357d2618a8624cf9390871ae38ac71aca16d078facc2058ff1e. 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/QZZ8A2556845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ac3412b1c624ef41c8c0bbf0e88a844b9e5b04448f57ac05e54115e654d8f2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:53:24Z), 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/QZZ8A2529466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5854f6e0e57d84de49173bccdc1c835294d3dce77809cbb7d0e17c1aff77ed. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ8A2549212.