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 0x260990402363142b290e8aaeb952241a46df61f13d55329bf75cca23d456e1d3. 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/d1bdf815-f19b-49f5-8f22-875d3c5d8842.json and https://artists.proofprofile.net/proofs/artist/d1bdf815-f19b-49f5-8f22-875d3c5d8842.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 0xd1cc308b7f3c248b49a6132abe772bde00839df8ad043ca2f2a8ebb04edd1f23. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SE5Q51800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf16853f033b432ad02a0eeb53361c8486bd8ccb8782af024780517a4301f1ce. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/SE5Q51800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8519e63c47844e1c15dbddb36b6d395481ca5b74237406b1ed28a577cf6e50a3. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:48:48Z), 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/SE5Q51800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af994d463e1e213753f32b0a71789412e264939932145ac49577990f9a7c34e. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/SE5Q51800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b76c5c94ca1ebc118a8526f6ea03cd4c4f82fbfb278de3822deff4b995b264. 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/SE5Q51800495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e755a3b9dfb1bc5d2b87936fbd09df387f4a8994504c82d54468fb727f0bb05. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE5Q51800837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5862d592df52febdb6971bb7fd4b3de716e16cb56a66b32ebee0fb698b6742. 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/SE5Q51800838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc755272207a62e12be8f683d4f42bb609da526d3f04534c92ce599322fa930aa. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:58:57Z), 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/SE5Q51801003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5b844c873609e538f61e9b94e4cb3460b5949ef7f9931e6ec44f6b3a34b9ce. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/SE5Q51828640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc269e09594c049b6a20cb31cd25ffca7526b3604b94b8de16134c4e2623ae5b8. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SE5Q51823363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9f12aa3af46249a79d81c862d19054179d010a9302bd9a82a1a0dfa7ba4a63. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:35:25Z), 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/SE5Q51814036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55899e265c6fba73cf87e87fe96e3b263453c43a5af2ed42fd24fab569ff8f2. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:32:48Z), 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/SE5Q51806743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba153be891e8539c1a0f7bc7ae31315e4ea2afad6116ff47ff9c0e9fafdbd17. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:16:55Z), 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/SE5Q51807338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6869433e3ce952c2530de1623301a03a8970c6a80bbc9fadcb1da2da9f0a6bfa. 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/SE5Q51828519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0bd38cf32863ca1c76a21ce8fb0f845a16bafe7d955e9488c180670e540953. 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/SE5Q51820908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc2852e1d2242f7cdb3f5f051b157cd13668ff40259f60d0dcc4a621ee928fe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE5Q51900081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad046af12fe16bec310eaedebd570e9aa2c51284ca67c95169feacf07891397b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5Q51810423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3d93651178a9fc5e39de10d48c10d3cfc53e9691bf92bca51827f9212520a9. 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/SE5Q51827292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6b0bbb94ceb6fe24d168bbaaa76603a1433041e6823db4f4a6b7edf79d8159. 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/SE5Q51827581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebbf4ea5869f1e721677a325824c10a414ba3b8bcb0128a46632c742bec2508. 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/SE5Q51900435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d3bcd0f7e475ef66821f460f2965a3d6382e0fe9b618d64b1a3d63579dd4e3. 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/SE5Q51900489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8043b81904bcb2ef0636839815bb5ae5e10461ed0e918a46482d9d8c9e6043b. 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/SE5Q51808741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a744a552027a0d86ca10614f3d9478069c3b6fa71e902432fe50fb0c0bcbbbd. 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/SE5Q51827638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3a2cb196da3af23800e2209492daa656e09b821dfed53e26dcf939ef8fb9ea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5Q51828577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076c1eb64670ff03b4d83ca35d985d8bd3362d4659b797daa1323d80f5485ada. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5Q51900217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcad3982a1aac0a382f7e8c5a5270717f25b98b9cd6018d054aee9c7de0145ce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5Q51825577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84c74b828a53504071b6399b63840c7a6f2b42be0854871b9458c68653226f3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5Q51900512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f92631d9bcf316825978750383909c72b6d79cacdb1c6876ff006203af3c632. 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/SE5Q51900591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8764023b0f4965917e62a91c637054f39b438ebce197b8f33a1740996d1e8f. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/SE5Q51900791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8f508f2b28d92040dcc3585eebde968db014735b290c0585259b0ff3c33105. 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/SE5Q51901157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185908c7201b23415b45b49bc05b99f1a54fc5b303e97b6201376a848591e08c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:25:32Z), 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/SE5Q51821428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdfbe1a8ad54ab26c124ba322280d321a1e632ea7270a4bbd1d0ba6f92abc01. 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/SE5Q51902169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4475b300d963815ff7f5dd15e9243eb9fff1a1d80ca23a19ebf894d8b62f7a3. 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/SE5Q51902544.
Next To Me (Acoustic Version) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a2a9ccba2401164a66ce912047fb33e6cc9b8c7ba755a229b34df48296aa9c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/SE5Q51903518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2975411692b280c3c40df2549736c36961d6ccf9a793583e110e568cba7be0d0. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/SE5Q51903464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce21b58d4d4bb3741306971ad3dc70406011e59418131a70db5766c855f4fab. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/SE5Q51903406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b16ee0ac53cf2d5cf76c2086ec629e9629aee436b37364ea24d07959a3acbd. 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/SE5Q51904063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae01ab4103a94171ca69ea0b86473514c8407e68a935036bf9fdbbb06a1fea88. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/SE5Q52000358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfd2911b9e17224bc82fea2cb860a89b50c4b19235ba490d7b022f055898cc7. 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/SE5Q52102559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d924f9922184aa056ab7730db54efd628dc7058a9614a8f398d6ab8b7942f5d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5Q52300589.
Mom's Old Hatchback (In Too Deep) - Instrumental Version
Epidemic Presents: Crates (Gouken Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d73916f84cd82d5002648f848d81d06285e93f0c660ead7b42be33f8eca226. 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/SE5Q51902012.
Dance (Sped Up Version) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2e91961329fce7a220bf5b41b425770e5a1c634f1bb9eee77977b385b2f1d1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/SE5Q52300590.
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
Sorry (Come Back) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0da5999cfc046de3b849e85dd893ee58c188421a4d182f10df0d58fdebb237. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/SE5Q51902166.