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 0xcd15700484d6f78898b5a16aad9a8d715c9b71bde02d0a87ea68d4f12b241597. 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/bf33a250-4c61-425e-ba1f-1a4f4849c9c2.json and https://artists.proofprofile.net/proofs/artist/bf33a250-4c61-425e-ba1f-1a4f4849c9c2.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 0x9016737c247a235855eeb95a987817e875ff58f8daca1af7bf3b47d94a1b77df. 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/USL4Q2051615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac264245ea34873c73ef5767e36bbba96028f065d2378b49e8cfd7ccd1b7e177. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:11:38Z), 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/USL4Q2051616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe131044f96f8abe2ba7304e50144a1c249abc11c0cae87463bc51f5000034e94. 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/USL4Q2051620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c916834b9f078774befc0cf7366b8af7b260ac9fe469b62fcf546bb71d9d94. 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/USL4Q2064750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3122d1d97054affb83f6d914ab438248a532793a8062b0c31208a358a86de78. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T04:54:57Z), 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/USL4Q2064751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dea80bd5a59ebfc8bea9cff50ea10dbd1588e8cf122a6bbe51fed7af0e35172. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:56:11Z), 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/USL4Q2064755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efb6780be5f7026efa0ba451fcb8f5b504cda9f86707f0070c109c4989ac6a2. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USL4Q2064756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2105b25e297b39e77d441c13b6cf7710be17ce492010dc230c2a4b09475c5e07. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:30:44Z), 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/USL4Q2064760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4809ef19bd1eaed5a7887a60bb4cbbac315a8bceb0b04ecf706d285424d03a60. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/USL4R2098448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3a5e160030a061f3cefaeeed4e3294be7bfd0a51cc2fc70693dc26cad8d54e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USL4R2098449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eac3e398a7bbc1fce48a2a9ab86dcad47822c66f535b2bacb021f979acf8040. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:39Z), 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/USL4R2098450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc996f4c3d67b9d74201dc245755b856b8c040fdbb6bfb3ce325a6a38be2f69. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:53:43Z), 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/USL4R2098452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09b473509f2dafeb4375dd27757c5bd93bfe452a587d9dc9f49cd8f19d8c52d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:59:56Z), 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/USL4R2098455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d4579813e2e09780dc5e39d8162470d64d5d1ea3be85fa83fefc4fb118c037. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USL4R2098459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1d1a2e0c909da3861376df0db72879a5ff885b8fa4463be3765dd505999e84. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/USDY42179823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd84c8c87d03a1a3f3e7ead2f37efa7eeefa9b987546c46aac70bcdf8ba84f55. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:25:49Z), 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/USDY42179827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc6145b45b05976c056ec953c0f385c89f3db2d1a949e3362a40e87c23bb296. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:31:05Z), 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/USDY42179828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdae6b1a66d94afe3bf3147a585b921c276313ec3b02bd34855748c92858c58c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:10:55Z), 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/USDY42165557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3794eb6fab5bcdef01dcc5ca498cb30d5e000b872b3b931efdb12e198d590277. 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/USDY42165559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa02c6543444092449b14de39ffd43c03818a55baf053c05bf6928a9018441bb. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USDY42165561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e32f3dd1800df26c56af4116715b30bf6dd003f4cf4fa95c56e3ca8d09ed941. 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/USDY42165566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e047317b063e99243935fd00814fb2b2f8964053649d6f8d3aad1b88dfd6e4. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/USDY42165567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d032da0c1dc0433455cc7827d6c16fe93f796aad8fe0a1a35e5c9998658d832. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/USHM82162324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51292d4e068b35d8ab58ea7a12f4646c6d84d34a57bf27017ee9a964c1b188a1. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USL4Q2140366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8289d8b3dcd6fb6e90042d412909adefec3099bac3a39af554bb16129a06636b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USDY42240589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a840aa41f68611528259f3e2f6cd89ade63f8fbb4acc684ca0fc82af576a8c. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USDY42240593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c5cf81b992526ccc1825ae4ae7939ccb47877671936abe0accc3114618d018. 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/USDY42240594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c61d1b37dacfbf1cb5772988c9febdae789ea71c8c6e81d32555328cc40b2b7. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USDY42240597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec7458da457454d1f967921c647e2dc419f0f4c5ca87c1b5475fa569acafe04. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USDY42240599.