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 0xcb07440585899ceec56534e6f8d675e3db47273ea0caf1a1b5ce159353af0411. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aba4a321-2f85-4058-bfd2-c76cacb27c17.json and https://artists.proofprofile.net/proofs/artist/aba4a321-2f85-4058-bfd2-c76cacb27c17.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 0xe7d5f0c5ec79c1be53b0c0785270ecffc35394a0d5606e53e59a775360f77533. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZFZ62423856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2bc57b19820204a860ac880e24d6b007ae754f4133af110aba86d27e90e075. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZHN52336337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd1d12e8b59fb1d6bbe1ecdfe1c32298f4056fcbf9d9ed87c1d036b302ee0d4. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZHN52336342.
Order Of The Day: Return Of The Cherry Tree
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619f82aba7c9378b8be4828504a870649e462e83cc904c46dacb7d75abed2ac5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZES82164092.
Chinese Waterr Torture: The Waterr Dungeon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99d2a541c7d590d573681b976315b42c57faf023a2c0f6c4f0ea897eaac4f15. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZHNB2598249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e094c13f93e55a3168d44aeb92835ad798917f43c5947c269cc94b1f65f277. 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/QZHNB2598250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5ce4ed9b3e49b677c7e8630c54974fd60d79d6e3ab79f78623874255ee91dd. 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/QZHNB2598251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce0557c54956c71edc0e6b05828f08880b3607aa41c91b6b0a5164271c2b566. 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/QZHNA2566311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92b63cc019c689ad934a1fb9cd0548b3fff16f82bf7d8f559efc57c819b401b. 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/QZHN72588809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802572a0d6473789631cec42629fa5f6337e8f85199a16d5791473a383a2cd5f. 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/QZHNB2598252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf54f8ba7d8bd6ae08dc3447b0612bb18fe698b85bbe3eab54780b59c8ad2e40. 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/QZHNB2598253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0852a7423e45cb25f15f049a816d6d53dc428af05a91952a75868057b9acace6. 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/QZHNB2598254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b2206a1b0b292652ae7165553451070c5749d14b323220f24ddd7346e5c4be. 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/QZHNB2598255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5798ae5cad8f9051bcc4d3be4e0bec2e70248b983ffd7edc8248c34d42a1de3b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZHNB2598256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7a52f97f2b544fe030ecc9a79cb0ffa08010160628ebb69a9e7fcda6fdb3bb. 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/QZHNB2598257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb287aa348eb5c958d3b3c621088b28746e489f4295765f3ce82197cf957f173. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZHNB2598258.
Order Of The Day: Family Business (Side B)
Order Of The Day: Family Business (Side A)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce0557c54956c71edc0e6b05828f08880b3607aa41c91b6b0a5164271c2b566. 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/QZHNA2566311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92b63cc019c689ad934a1fb9cd0548b3fff16f82bf7d8f559efc57c819b401b. 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/QZHN72588809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7ada1b4543e7611a81ab9ce29ad9cdf43c1be838aa7b67bcbbed4adef74785. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZTBE2481190.