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 0x844f3b76cabd9e49cb49a2f73732207da4735e5b2fcb2f5974252ce801162441. 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/1ec10689-c940-4680-bd0c-a52db5361742.json and https://artists.proofprofile.net/proofs/artist/1ec10689-c940-4680-bd0c-a52db5361742.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 0x38ba92a58cae13de6f86877acc89d205aa148a9260a634dd0776a80a51242dab. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR0042899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa4eb0fa5b39f2ad681a8c304da30970b426784dca222a1f9a96e450edad340. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR0042900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21aca6ab6284dafc81952a4f0b88797d5301c37e4d82938cba5cb2f48c83ebd5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CA5KR0042901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073700820982c18dd80885ead7350f98db9aa2f78230ff73f3a635e615605f1f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CA5KR0042902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f09bbd8723155445fdb3e649f14464cb5e7b262e346bfb5cf47bcd579bc688d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA5KR2324025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07146d5fc683069b25f9e9ffdaeaf4cb2b7f8f4c9ac389bcb4ca68fbb020b608. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2324023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9114462e010448c5b77b245c79c0a601136d0e20c281dd9ffd127e0d7d90973. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR2324024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f09bbd8723155445fdb3e649f14464cb5e7b262e346bfb5cf47bcd579bc688d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CA5KR2324025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7857268907b8ebf92356ad91c4d5c19f25816a211fae2412671f69a0beeda3f9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2324026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c891b82680e491faf163f39b1b7cadc339cd59b567fb061eb4f0b0b676e744. 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/CA5KR2428331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd584ed2e14e72d3991042cb8c4f51a3cac6ea4cfed1f7cee2e664787489d1e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2429379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacc591ff39ad86706dc68c3b5cd61214fec779f6c5db9fec0924b5b6606550e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR2429380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c891b82680e491faf163f39b1b7cadc339cd59b567fb061eb4f0b0b676e744. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2428331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd584ed2e14e72d3991042cb8c4f51a3cac6ea4cfed1f7cee2e664787489d1e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2429379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d5e53feec6376a939d4da13e466537f702ccc1620f20567662944e2653a4d5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2429375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38670644cef0a589c213ce8c9e3100bb9756639efe35a6f9d128d6d083924cfe. 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/US38Y2408682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53945829b0eb4278ff63168e913c9fdc29178f9b73046e7b963e3afea36f4c0d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/NLRD52413786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bbaa0885b38588d803e588a742f091e5a2e87ea8904a134ffc6f44653cf22e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2506561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1010ecab39488a9e7429fbe9663f822b8d52ec299d44e6c22d9ccdf2954f6e7. 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/CA5KR2506535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae35fbe8d3969853c5e4a14b3c3841c34cbd89268201c70abaf36456105f6124. 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/CA5KR2510365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab261d23c569c64ffcfbc29c6abf042600c906d7783a765880e99da37778cbb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2510369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4133e7849791c366b3fdd40176a2cdb73f35314c66b559e2cc78badcfbe1fb20. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA0M2335203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38670644cef0a589c213ce8c9e3100bb9756639efe35a6f9d128d6d083924cfe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US38Y2408682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d99bee0c5a3601f52e8f8094f82531921cc9513c382cbff1c281de02bf29da. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR2506533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bbaa0885b38588d803e588a742f091e5a2e87ea8904a134ffc6f44653cf22e. 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/CA5KR2506561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d99bee0c5a3601f52e8f8094f82531921cc9513c382cbff1c281de02bf29da. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2506533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1010ecab39488a9e7429fbe9663f822b8d52ec299d44e6c22d9ccdf2954f6e7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2506535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4b18c41f7ceb1193f2a303f3be5dac22775e0c33784f064393688d4bfd711f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2485549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be2225235faab509cba4f2339b0775f4b29920734e5b7f7576384a4cbcfab03. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA5KR0028547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556a63c6da4dca2401d50da8454e58558c95a4d620aea8b9feb4c0a9cb4cd431. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR0028548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611002052941a4e59cbc0c8c019e429941b6c061dd7a1806c3753395e0a90b05. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA5KR0028550.