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 0x431e782a3e0d215af8eaa0077ff9d260b974aecc8a0b84a98aa17cd3f03ca434. 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/a41afc75-20bf-4dfc-83f9-5570ab5679ad.json and https://artists.proofprofile.net/proofs/artist/a41afc75-20bf-4dfc-83f9-5570ab5679ad.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 0x358bf857cd2d3792a1309455e00792a5739302e91437adc3f4f6cab9a59b7e4a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCADK1727488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b085a2cc803f14c5323ec6b870d4d9cdb38655ae00626bd1147f8fa36e57bd9. 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/NLK2U1800166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a382bc6011a7f06be3591de5aa4ed7e385e143193109db057f8b50385c2ee83. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLK2U1800214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab1993b33744cc6d53034d9b5553e7b35eb9d107f95255ab0c36a28223affbe. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/NLK2U1800177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1bdd7a58b9cb85630ca4a00f9c02beb0fa0ea02d5114f1f53742bca9615332. 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/TCAIY2471292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf366c8a8d2dbcaabe5370f3534bdeafd00a69fdbd1d07c13e47c549b11058021. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAIK2400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28534f9b99afa2f3ab11c2ee5d40fd15311a9cd3c312d0e188eb8d124c924da. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAIY2471335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0e330a638c053d448448e11d36323ab955cbbc8fe977da61e99c3b6d508e4f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAIY2471356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedc76efb1760ff4c1eae957df5dd4f511841bcbbaa5847b2f52436fe42b9d02. 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/TCAIS2470096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312ab8f28e20a109d99f012fafad2202e7cd4e52cf325fce5d5787170ebac8f4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAIY2471423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1d85659e10151760434690bb959d8e5943689a3e3aafc1e30df24e6c4a373f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAIY2471466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821a3a70a6007070de18e71aea382d3623e4cf8bc88ca8d84a6d5549cfbc3c3c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAIY2471526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8534403c36df2381447cb6ebc252d267fdc17cd2d66d82c0d6316c24a0f52c6d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLG662300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8453e64f6a4a398bf9e9b1962c1e7d511078a678d74d35c828dead7a8fda74. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAIH2459612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e5946345a266c238c0b7e52c2354e5c62ebf1d72f8ae32aca39ea1bf8eef12. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLG661900632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4acf35c1b50a49a08eb972078d81a08380eb1568e51bce9edf59e268abdcd01. 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/NLG661800526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86dbeb57dfaf429689eedc49e45ccbcbcc5a66b3e290af587e6b0f9e5e69f8e. 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/NLG661900479.
SVP (feat. Young Ellens, JoeyAK & Sevn Alias)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2c31751c5247cae0f8b70491a836608b89f49f1fe2cf8a56d8a320061da3cc. 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/NLX1N1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6830da3a2e5b0595ff6794b7c91c2849a4ce7c8c989f0b6abc6c1fa19844036. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL5HJ2200356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4514375a5c536be1ed923b27aa65be8502cb78a9a00d123957510bbad5ed7729. 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/BEB472000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedc76efb1760ff4c1eae957df5dd4f511841bcbbaa5847b2f52436fe42b9d02. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAIS2470096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdbc89b61b7f00f194498bb2bad27c018efd08fe9bb7a66118c3aef1c2f3e6b. 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/NLG661900962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4071a5638ce3f8e2fb7f38eedf8cd63abdf24883f84d9029bdd72e4e062d44d9. 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/NLS241900088.