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 0x9e71a00c82bba03b6afe199a69bdcebd787fbdba3672e65b527518dbc07ba8d7. 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/8b058281-ba3a-4c64-aa9a-768be1dca7bd.json and https://artists.proofprofile.net/proofs/artist/8b058281-ba3a-4c64-aa9a-768be1dca7bd.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 0x717549f70d52f51592e2f106a96be5f77dc947234de0261c5a326b69e4dac644. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/NLM971500018.
Hunch Music (Mick Wills & Fett Burger Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bc4c310ea1ec78ae8f921754576e0cb1a7f94fa87aab13223f68311478d294. 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/NLM971700139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3c449c19b84db1de5ff60c67c73fa1d52d3145e79967b8332a7b22f778b1df. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/NLM971700140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b06956721f69473b42551946e13d4df6a7c2fe2c1f1d959ff64441e71018ff. 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/NLM971700141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f4801700363e57f45b9e6fffc405de2b91263ca28156192a76ceed069a76da. 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/NLM971700142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe98c00947dfc6831461bb3802ff7c6fa5af2d8c289f35b32c61037f3c124cf2. 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/NLM971700143.
Ritual Of Love - Ron's Vocal Beat Down Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23252b6619242d00d213589cf0b17929d5de5fc7ada2f365ebaf2bb98d47b6b7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/NLM971700144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5087a89d5ad46b1244c9fb7f937115409dbe8c67096b89adc32c3492d96347b. 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/NLM971700145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d19f99e4bd8f4dd8ac27b252c8423e871a65499888fa69a0cd1be41c925221. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLM971700146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ef30efffe97821f295233b964754eb56cd9a83ab319ee0ec5be7f5e0f37e2a. 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/NLM971700147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac3ddff83270829354c4aaee59a039066222511c0131d651bbbf7cfcc64debc. 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/NLM971700148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b360a60d00c5f528c2328653056f5b7e1f7a8e2e9ad7941c233c610a5546937. 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/NLM971700149.
Without A Sound - Long ''White Label'' Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8a5d1a5c495a213eb0173d9af40fcf5c5afc0234b7f76d2354885e3b5b52fd. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/NLM971700150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f34034648ff0756c71fbca7d251ac29092724418a90c261f3cfe019a0d4ae8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/NLM971200028.