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 0xa0c96b93750f29ad3d4e3a0d7694f14edd29c50a2f9658fe4bc8abdcdcc9f1cc. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/401e0a6d-4cfd-4a6d-b8e0-ae1487b8ff20.json and https://artists.proofprofile.net/proofs/artist/401e0a6d-4cfd-4a6d-b8e0-ae1487b8ff20.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 0x0252f066aa0a4700c7461b3e491d62f8fc117bfc3b00ff6341bd2cb46c2f863a. 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/QM6P41818269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a519c9cc58816ecd71fc9d4fcad34f2267154f156b2b6c7652050bcbfa09877. 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/QM6P41817016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b18997e061bb9731df48003a9eb67b158fc42bf1ddee6c7adeaafd6dae8df19. 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/PT1AS1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d936be5dcab3034584316ed63b3147bbfaef5fa6b836da8c70c43290c8d608d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PT2HF1800014.
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 0x626da62db0198b8b9fb3a285cb6848ba340928be7ef02542ad1448e0d7314f03. 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/BRDSL1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa055202fec81c6f641955b7d0b85f2e7d5b8daf069c114d9f7105c290f35ad13. 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/BRDSL1900003.
Gênesis - Abraão (Trilha Sonora Original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9149508856e14e3166ddc914dfd9348f2663bd5363e4bfc994a200630df96a. 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/BRPJ72102115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc0485cf9bbfbb65ad824b79002ace3a00d2fce597b36c41acb5e5db65c5b63. 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/BRPJ72102243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e4f2707779a12c255cd7946fd8170aab78952cae3260d4749e4683258d3fbb. 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/BRPJ72103514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2dfd03e36ab6baba53f74b548fc413d023d569788dbaa3ef329d736f99b6be. 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/BRPJ72101005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52b50d8c6e3f73fe231d00eab81d5f4acdadf7fc6d876a3b2079a6746fe184b. 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/BRPJ72103512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e44be403cbe5db11175127c2e5a7c3c7a23b9e7573246befc46762f24706aae. 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/BRPJ72103513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b1ee5ce6afb2ce7d64abc7fcddf5a1c1e270cc99f17fd4d8ea30f7945d6eae. 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/BRPJ72103018.
Reis - A Sucessão (Trilha Sonora Original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d41f319ea8f9b338285ddf5c62db520a60b3c85e3c7de3510cce9203eaa91f6. 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/BRPJ72303014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2002524ba1a81f34d3236ba58e835071ed217ea42846b5de71358453ce3259. 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/BRPJ72303015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1506010d8ae1be48e17802cf019a189ea3199e228df2595f8e972ed9807cb4e3. 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/BRPJ72301166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5934c7d674adc8588198480496e7647f8c0a668eb03f441ed211183bbc23adb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRPJ72301413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775d0f0af2d0d9a3c31240b9b86ebcfcc976204f8da313eee59fcc24dc94e082. 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/BXBCA1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d9e23de11bbf905727e79c68c8d48ba089a7fd9b342922831dbe0b1c842a45. 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/BXBCA1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfa75d4571bb8fce151e1f21ad50f0f90281465107bf6946690207cb5a5cd68. 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/BXBCA1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82579725ad34ab0be8a61be4b72f74aeda6e7103162a1202eb23897bb4da66a. 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/BXQWZ2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6c7ca1d0409ec5da155d61818ecb9a2636f3700d5ec6b2b57e3057e754d575. 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/BXQWZ2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1762e5cc8c34a3b3548288031b1c646a30aaf83485cbef4795c33619e36e26. 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/BXMR12300004.