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 0x16035e542107f66150e09f98f28438354d6b43c2a7e09101b069eb0546652beb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5064c91a-35a2-482d-abc9-d8ff55d5e31a.json and https://artists.proofprofile.net/proofs/artist/5064c91a-35a2-482d-abc9-d8ff55d5e31a.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 0x467ad2acab5632e0f2a3974e7061048f9a8a797c71030cd9436266df629f3bd6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEA609600655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b3b3aa65d3c7529394f5eefb237d1725d3b2f740e82dbc7b0930993c799695. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DEA609900757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8530164fd4305ea171ae52bcce24601cfdeca1476c1e9fed9c292b57ec70f3e6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEUM70601925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3064b5aca342e5cb8fc133b49343c5f108f2d620a1258125556383e4b46acf55. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:43Z), 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/DEUM70502037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb79f5502747e1fd1a4501ba6739b6b6a174af32d07bf0692f9c5ca6ef4186f7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEN120504654.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de68739ae32de78adefb6aebe2c579e95bf350b208a2a068420e90b08be34f0. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/ATW609121002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ded00b584c5559aec3dbcea503c60a73155b84da447243d8cb6c25acc84eb6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ATW601041904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1e297dea570d2b7afbf0f5d27b6963cb313b18cabc745f0eaef4da16eabae5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ATW604401101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e9b3882bb700162652ffa0230684416c84b5b7bf8961e1ee83080456231efd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATUM71300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d0ffae9ee229012e79359dfc6c15adab54d5cecc5a79c1929c6c45aea7898a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ATUM71500149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e364319d20b359613fd31b8349f6581df4413235c1e9cde6ef9b2f79c3a9901. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ATUM71500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b54e103b7916af1775db9e526ec91f9a483079b9846c527e3e901e84d60653. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ATUM71900197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18379f91dc308d349b6b5c6f602604104acc9cecb43e0fc068e69d82078c5fee. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:02:22Z), 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/ATUM71900191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec00658e00c4751b509c04512337c5f01a9c2378a6f580a8611f2732b11a37c. 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/ATUM72300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78745789f2e5f898f0b1e501f48e5af27b73fc7a266198cf94bed03034d1e1c0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ATUM72300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760b77b51bf4aeed60aa8e6cc49a627187d9a08fdd7297535b2b6afe6148c7d0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ATUM72300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595a6f71d77915bbca5c5c54002ed021316eb2097f8addea270d02a1b9c1955b. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:28:49Z), 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/ATUM72300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a0cf5ae38b923c3c8c7949945f7c8edf1826bdd96377ff87a4564a4cbd140f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ATUM72300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760b77b51bf4aeed60aa8e6cc49a627187d9a08fdd7297535b2b6afe6148c7d0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ATUM72300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505b90c7fa9b7a3dba88030c8404ea93169199f23f134d6873b65d3b11ac0a38. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/ATUM72300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78745789f2e5f898f0b1e501f48e5af27b73fc7a266198cf94bed03034d1e1c0. 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/ATUM72300072.