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 0x11111df5a8569381d7159f4d4dbb00cf7328c8b6fb83b6510cc98ed7feb3458f. 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/28a15286-f61b-49b6-ae28-f825902c6a83.json and https://artists.proofprofile.net/proofs/artist/28a15286-f61b-49b6-ae28-f825902c6a83.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 0x302b5a45b29d335c53703be8bcfdb44052539513bff27f9c98ac9ef2dddd3fb6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX3Q92124634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb8837aba76669b9a70cbfed45547d6d69567f8a50dc32f4e89c94d3f2a500b. 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/GX3Q92124635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4b547284e623de826d5093606ae2fce0665b35c44e1b282e3f7bddf5d95b10. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QM24S2305019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeafe43c111160b6b924361e1fc80ce152cd8828d7c802d450422780756951b7. 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/QM24S2402107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a11f783b33d8c00f2a5315713b9011ec24f24b8f2f1ebeac875777847dc742a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM24S2402106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bff03bf91e81c8fc9df706500f93fc310b3c1394569d693a836a3e9776caab. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM24S2402105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff607ae3d4b104fef7b40d0294966694312982b707b598b19dfd387d3cc081f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM24S2307574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9377858bb132d1c7b8156c0bf0078169db96454c64cd5860c57a9ca847bcbab4. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM24S2402104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1453f846f530bc5e1004b12771f6579199fb919d9f3a4f16405f63889ce1c77e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM24S2306590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1061e46c6c0af8417c79b84f26f1ae52a1dd817d611fba1f0935e7eacdc3460b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM24S2402103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4e86ea600be78a420b797bc73741efe60e45ac15ffd0fa5f8812634c9d7c71. 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/QM24S2402102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7932ada225300c5505b0833e9b1b3914ab558b79f2655bf0e4fac76ae1d1c0c9. 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/QM24S2402101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038ea4f1a6c0c21d457f9678f4cd0b35ce7f489737da7904f3c9325b16f4c9c2. 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/USQX92102140.
CALL ME IF YOU GET LOST: The Estate Sale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe7b0510fabea0c446eee0d9d5db3fafbe80ff3669800bceaa702e0d0f8daa8. 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/GBWWP1904863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827c71b04749ac8aeb6c5429bf1b4733c0fa9462d0f182178f71f83a4ef40769. 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/USUYG1193011.
SMILE (feat. Xavier Omär, DAISY WORLD & ROMderful)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d2f6233587044278827e8fb244d8631bcefd310d58447e8bd813b64c8abd97. 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/AUFF02300375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d2f6233587044278827e8fb244d8631bcefd310d58447e8bd813b64c8abd97. 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/AUFF02300375.