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 0x50c19d7bee30f1163b62c66364771d5f93fd58413ebb218ac59dc1c17bb9cac5. 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/f5612597-57d5-444d-90b2-fa9387294406.json and https://artists.proofprofile.net/proofs/artist/f5612597-57d5-444d-90b2-fa9387294406.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 0xc2b985ef014087c363c13ebc2b11d627c5fa1ab2b9c3696ffddc311cd001ae19. 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/BC0YA2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976c430a531f34289c58a17b9e1531f41efdd2d7c99952dff236850bf3f8a436. 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/BC0YA2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cbbfc21c553bae75941b5b7ced7d7488e0ad4364dbbb556c3fa06a2bb068bf. 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/BC0YA2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe8dd9f124962ada07a3208cf83d2c18c32a5cd9142f0f713c15b079438ade9. 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/BRMHV1700009.
Moska Duetos Zoombido: MPB + Samba, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4d293ff25311f742c5e273a0527b8e6d85af8fc74079488ef742eff51df28a. 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/BRZ9C2000024.
A Tribute to the Beatles '69, Vol. 3: Abbey Road Revisited
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee51fe134e891e5c3daa32bdd8efbc201e3fe147b20e0587ff09a2aefdae9ca4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BR2RA0900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1bb63aa08c8365a5037743ff05be24485d4bfea0bbaa36fe2888d4363acced. 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/BREMI7800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130001781d3521840d9b0e9c9eb5217e4521004c666c32298ae25c875d1baeb4. 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/BRO8E1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe28f3ff4daf192e62d25fa317be04496b809d032a15f0652fc982670282d54. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:01:55Z), 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/BXNIB1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc100c874e7d3bca096c72f8c662059f929b4cea1b34ca1fbe603c06fea16e8b. 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/BXNIB1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1a7759c1c2f7a3e6e11f0898a25310db2fa50bd8d75f737a09379d8c578af6. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:31:47Z), 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/BXNIB1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8364ba8681df6832369ee3acb349083a046544e45209c0c1d3775f1a470bb5a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:50:45Z), 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/BXNIB1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d2ecdbdcc14f9d5ab7abc942fea3b36e2aacb511fb86f799f40bb7c0fe8c59. 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/BXNIB1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818348dd324c7e17187c78bc316bda685e29909557ab0625415b6a3d23a024c5. 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/BXNIB1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe90560b4a452de83cc2a2f516d60beaebd982d81988b93b2f2768841939216. 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/BXNIB1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60783d7169313f3702cb152f1a6320422611bef8a7edff81e8453a91cb594626. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BXNIB1900003.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a95682adfb5f633ed85b143b78d543a0bea75ba757c0f2e68ce2d7890f1ff2. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/BXNIB1900010.