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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1591040301f32d40eb491ae7a17cbf751a4b9b6f3eb2c2a68994f41ffb46b4a7. Chain 2 (Bitcoin): anchored in block 954063 (2026-06-17T07:49:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47b2e8d5-cf49-4005-b180-b93c8286a9c3.json and https://artists.proofprofile.net/proofs/artist/47b2e8d5-cf49-4005-b180-b93c8286a9c3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfabe8e06e4a11334a885c283bdcbf58b2064b5367e24d244a83240099224b07. 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/USHM92196349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299cb1f48bd8f2afa6ef775db3056464d9b420057c245ba69bddefa44896874d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SGA831282001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c60f20f7960ae3162aae21220c0ed50e036ab6a02d53cef8b9786a864d0c6e9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SGA831282002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c1f017bc97c7b037ad15e2a5c40236cf1afe4bcbcddd5542ffb768d3fb9a44. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SGA831282003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f8cd304d439f68e1a105e3ad8ee4bd22c8e0bf1cc0558015ee16bca9be039e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SGA831282004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa681595f3fb86cce82c909b03545c2d6f037f6c6e29ccd4f98df1b80f4b204. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SGA831282005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7a4952e4494463f05a802adc97f93b512c91506b9ab9ded40a8c88007a600f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SGA831282010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9df569c818c2647c6553b71bc34b26e3ada54ba83b93bc4e89b99b378d4e4d. 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/SGA831282011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4177b55c0aa06a81d4154633d512dae2223d926ab716bb280211b9d41d0b30. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/SGA831282006.
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 0x16ad5d235595900c51d95f12718c3a2dcd32efa1a7245a8165fdc7a78bb85eb7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/SGA831282008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a955a7c3c0a937a042ac50242c1d78d4ffb505ac50eb11092801746f1b375d3. 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/SGA830782003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8aff5e19572043f2a9df8b73c37875b574096ed021935e2fc4024c8cd4eb05d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SGA830782004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4910a9df251dc21c706431cbda866ba6680926f2f2df78950dd8ee243d336ad6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SGA830782006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9470a200dfaba534e3b41294197b670be279113f8ca9ff2a32580ec2ae2ca76. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SGA830782009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4255b07a3714b3dc66ef595d5a1b51509fd01ebbbe4828a073651b25e688eedf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SGA830782011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1ab34bd262deb651b4ccb22282fcf5da492050edc0f689c2f01b38fc7d4382. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/SGA830782001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc61ba8d8389490860b88aab37c086201066af3d648fba41f71445d321df4eb6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SGA830782002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b4ae1da50ca582232b0412161a4bbe4ee0c03f7cfe6ca15627c7614a97faf0. 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/SGA830782005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b951fbe65ae9372db6639afd715d637551954d98629a1f574554e100b0a708d. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/SGA830782007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4362e59a952e303912bb407cc7c3168efaed65b456977c15b146b9ca134e36ef. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/SGA830782008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0c3aea6ac9d865bc42c52b7fd030f0eeb5dfdf4982f1dce868e25736f9ff28. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/SGA830782010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c4bcd8a3eb9ff208f263c841e1e184eb90c33583cc5a863329dea6f480af09. 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/USL4Q2356616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acf063d51787d08dab58b2404410c97480b0cc96dc583fd0482f0ea31a611b1. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USL4Q2356617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f503a4f115bce04e05ef63e54905beabc032c445b2a0f35f7ae8ac1bce6e66. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SGA831982001.
Captain Funkycurls / Class A Love Affair