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 0x73600eea58ed9913728b147931620f6774f67b6b465597c6222971c42c1ef408. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/429b277b-8e4d-4143-be1b-8280a1a6be9a.json and https://artists.proofprofile.net/proofs/artist/429b277b-8e4d-4143-be1b-8280a1a6be9a.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 0x8e1b4f13393ae57025dd8d4e0edd18a9b4734a6ef3a8c6a1d8f0e7374ee04824. 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/BR33B2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69868980caf7b45138cac7a14ee2ab9e91b47d0ec57732a7cca988428e22e1d3. 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/BR33B2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd310eacdb23d820e44567b7054c58d1c61da50473e5b794f54efc0579c5d7f8e. 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/BR33B2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec820abb64828697315ae23289028713fb6afc74d2ad4b5c84b54d384281032. 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/BR33B2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f8a838c19e0b5b6b6c069485699a249164daf2537a7f2dec8412a5d29eff3c. 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/BR33B2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029ffe9b66bcec0e8aa9f25ede795b1747163d5e16a5782374654aac13b575f7. 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/BR33B2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06299930384bd7ce219c59dd7744ccc4f55d897e4da51399bffbe15138449f7b. 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/BR33B2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32721715c10e0806dc9f394a47955deae3e6d6ef70fae16feb331b99c2326263. 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/BR33B2200010.
Bonde Chave (Da Série Original Amazon Sentença)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40b0c79f8fa8f0c971617424ea074d6795d5ff5a2afdc70ee6b2108e1a713b1. 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/QZFZ32283444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d76ef335076ff21b94567774e291a7ebc3969c834a94834c630e683430ed2b8. 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/GBFFM1918412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8780f84c48c970115045584e55d39707a05959ec57055feee107136b4ccaaa. 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/GBFFM1918414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fa0a7224aea5203a24d9f949e95dd5982535e07d9263904ddab392c6ae1d30. 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/GBFFM1918413.
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 0xa8e609950a46d7df4e8a975d014a962bb56a3e7dbdce488857f84f687d696f43. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBFFM1918411.
Um Ano Inesquecível: Outono (Música Do Filme Original Amazon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa405aa7b040d7b394fd7fb60bb90b26359262943312a67d598d1fd357411175. 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/QZ57D2200351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e537e8fe64a9461d10949c9e5f6d7a5690720d363eced8b6864fa0a09b3eb33. 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/QZ57D2200352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ad9f32851a10f1bc80ce98a8acad06e8ea0cf1430350c56d3756443b5bedd8. 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/QZ57D2200355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cd39eab6dc1909457eb87ab407e4f1eba6dc1fe711fd69856e6e941b15d50a. 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/QZ57D2200360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97005a38431e692df6d0acb2e882553f14275af0331d5cd9e58f2ccba41b3f75. 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/QZ57D2200361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd388669d6a320d92ffbf7454985b0a3191dca6d3def8afc6ad608eb1bf925927. 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/BXTXP2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedae8c2eba8f534eb648f3e0d32b770913508c5e72347f89a944c5878e28ead6. 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/DEN061800559.