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 0xf70d627c34a079de75a44d234210e44155e8fe2be3f217e3a818c2ef79c6e1a4. 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/69686116-938d-4980-b112-ff79156de9a0.json and https://artists.proofprofile.net/proofs/artist/69686116-938d-4980-b112-ff79156de9a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bangers from the Beatcave (An Instrumental Project)
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 0x41d93005d7c010c0afef03cf82ba11e50ef107d171e4dfc5f3d418f471bda284. 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/DK9X71700103.
Back to the Beatcave (An Instrumental Project)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035ea341370ddafb3f9668ce392cfe17347ede340ced10c48f401d1b74c095e5. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USDY42263576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1530b0afb47aaefa255eaf990df627b10e9b4a4685194264f57ebd2ab98124cf. 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/DELJ81622173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26396d99bed607e3f46d410b30919e7d7846a65e6586e37c71cb3bf09ffa501. 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/DELJ81622182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119f75f22450b2521d752f7db8e9a2e2090cfdfe387fb2ea4b2d2a0e84ab7516. 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/DELJ81622190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7397bc01d0b7cc2a2ae55aca7e0feb261b698f3e305473fa7e7a9911488243. 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/DEZC62146168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048c7330388b94934035a1954b0224b1b3f6385d8ed1b66021dfa276c09ab1e8. 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/DEZC62141390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bc950ea55649d750058f603312a45900d05d66fa5d4e919dd3001e3644ed83. 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/DEMN91500214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5df13d6d712ae7249fef8bebeb0bdf8eca179607b06018446cbec71bcf7973. 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/DEZC62497945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c787317f727dab0fd1364a8e58a0e1f60522de17da820125a9973e3eb5e49ae. 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/DELJ81913825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bb990cc82edf41dd4205762ffa6069773ed5cbb8775be41931e16785386732. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DELJ81913835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ce8b2c04a2ee8e5b6d878f1a110f84222d4cb297b198aab016f69258761604. 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/DELJ81350905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b32f5815f9e43d751fd2bfa7b056fd2c389bda09c44b2a85e62fc4d6c29d05. 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/DELJ81350911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9636dc7c4ef455440ec8e15e5c03d8746baaea5109d6eba116b57128df465c9. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/HUB161113102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855453fcf1f653b3021bdfcf4a9c3dc42e3307bcc19b570c5d16339a9e0272ca. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA2P1202757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100840a14ce88edd4f37fbd4772b0c18859659742cfac86fda7811c8947c2cff. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/USA2P1202768.