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 0x3d0cbe844e16e2c6371dd7ddbfd23085f2f0fbb85262d442480ff69e8f2973db. 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/0cc35f2d-abe1-4f86-a54e-1d02a2f640a8.json and https://artists.proofprofile.net/proofs/artist/0cc35f2d-abe1-4f86-a54e-1d02a2f640a8.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 0x68886596bddf4f26d7e03c7402a6a450e293643aac54178c79f8043a3acb2eb7. 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/JPPO01200350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2149e5909bd61b6b12ed4d80a99d3767e19ec473a72a98531be93f5cb264f025. 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/JPPO01329384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d67ce6d42af178a7199a16165416473d4ae407ddf4e2393ab085c4b06acba5. 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/JPPO01138329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1227e570d20d9fcc9224ef478d6ba2d0ef6865e74210c6a5a654366aab8248. 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/JPPO01403509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6419ac5f47b588fa54419a58a856cc9464343e54a55cc26d6c92b56349fdb16f. 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/JPPO01332931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7823a375ad13627e55850d148b111d179ee15e387dae2ab95376c53a5c5666de. 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/JPPO01336869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a4127b07032ad468cada3a180bf0a230af7789090209afa7877dcf1fa090af. 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/JPPO01221552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0dbef390fd66203f535fc548cd9e246e4808f1877fe604e2572473a4f869c1. 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/JPPO01221551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e548ea7eda7f67d092ce0546c3fed1c0c05aaeaed4d946cfbaa6fc4c6b4da86. 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/JPPO01346324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fb72ebe23779c364f9b03c36e26d47ef6e752fdd46eb140de5906bd110cfcf. 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/JPPO01411776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1df59323bc07b0f4173208517dbbc927581a658ca80fdd69eef4ed12d097392. 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/JPPO01507242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed30650fcdbae390da85ed8fed3cd64c39b1cefd7d7926527daecef51200fce2. 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/JPPO01100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142da98d6f2b444b26e06b3bc1a125e9d751c44829d6f9de1d6681d2dd330c08. 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/JPPO01613855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb451d590d28985a26fddddb67df5258dca4cbaf542e59a6a7b57d0c0830d76fe. 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/JPPO01202625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b59bd4b02585d67f0fa981922c3a707cf341991c81f85f7055e9b8a2697a5b3. 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/JPPO01503165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39fe4512b71fe25c9396d656d4c3855359d8cb7f2b9289cfa6c654722ed7912. 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/JPPO01613854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb2c2a6653bf35f6617aac0db85797fb1e71d626e449f70198652af1805f7b9. 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/JPPO01146419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a61819d8b3895e857d5cfbf45b2dfd87f4cbc7c02371fcd66e4bf209c95330b. 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/JPPO01409359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd97f1da66768c3af10e778ec9197498d2623a10efc467143f9bed8b3639115. 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/JPU901502678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ffe6717c5ad19fd44d369a1e1b5b9ad3b2ffbe8c4c72bdb841afde78328353. 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/JPPO01618949.