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 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 0x74be4d503b277a9ed58fa28b9e89b4754669c76d8e756f30f3845696da3fa71f. 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/19aa48b6-7208-4f76-8fb7-a4bc0d719256.json and https://artists.proofprofile.net/proofs/artist/19aa48b6-7208-4f76-8fb7-a4bc0d719256.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 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 0x6a6273c9ee661b834abaea68945ee39934e15ab0dfbc9a23a7a7934a6326013b. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/NLS241103283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f7ac94d9f9e40d044dbb38b1728f909a24932090b96b129d474422c1149094. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLS241101200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08039ba31965c42b34fbc2dc0bc4e0200508fe03f4eae8028dca8969d230040c. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/NLS241103290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd6a9b3ce600a1f00724efa7c4e2cc3d9c9e6fecadd0d49703af6b98be21195. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLS241103286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd3e35a6f7a44a84d361abfc8a25712430d0cd9e14dc99afacd87972d90c2a4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLS241201202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad94d686c3dd96d2cd45eb0c57bac59474399eb88c9eb053310203cb6ce62087. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGH1780629.
I Am What I Am (Pride Amsterdam 2017 Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fa8fd4f31e2b2975f9fc421c948d04aadeda1bf038ab70cf3f04dec840e533. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/TCADZ1815748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa9e737b51afb1b391c35c1fd9fbdb2bb7762dc3241a58a437de99d39b2c4e3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCADZ1876217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22f6a829a69754434f55ddd952bbeab7ba53f23a5f205fc40a39b1286368d7e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLN9F2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201ac644139a3715967dcd1a0b1a77c4c3097bad031f540614b144af2e845bdb. 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/NLN9F2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbafd6144343103f0135c6b87b680d894560d800d1a4b27ee0cc36d2791b7c0. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/NLN9F2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f28c73a5c4ab100d30ea0cb5a461ee0baac9d700113e24893981608636da986. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/USDY42204627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d684865c12bcdde61bdb2f497763f9a9eed6b2fe2f5375131ce7ff366053ad. 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/NLX2L1900081.
Lounge Top 50 (The Ultimate Lounge Experience)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe275527b06625fa90074abed2171b44b17b2972f9c0799a7e00726fe97e5ec7d. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/NLS241103117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84b285534c70c846c554d2c71cf601fb2e495c8f010d36de9907a028dbb5e58. 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/NLAG61301013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad248b3a18a305821916161b196fbc4db568c0d9149defd9aeb1cfb236ecf6c. 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/NLAG61301014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677bc5df09a1ed61949fe818614f9ec3f54e21d88757664b4b7d65f480aca158. 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/NLS241201761.