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 0x90e81cceb1e8a5ab0fa5650df9958b8813870b0d22e9b11ff82261a30d754bb3. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdd339de-d499-499e-896e-f8b22b30819e.json and https://artists.proofprofile.net/proofs/artist/bdd339de-d499-499e-896e-f8b22b30819e.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 0xfe7f1a91965fde874f8f201bb61d6d7e4938b62013b036646aa3b9642478d4e8. 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/ARA822400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2fa1dcbed3e6e57e32b03c0f9eae380f291ed2631845b1429f5ec059e2722e. 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/ARA822400529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a842fbdc91faabc0b7d46dfd0c00e78926fad3aa64ea4239285e4b7407d621. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/ARA822400527.
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 0xc5275f55159633763363862a51aedbebfaea07e153a2daa91e34f6b3e996a5bd. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ARA822400530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861e1a91c8d48e844af120a905453ef112aa843ff05fa20799616a61d9bc582b. 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/ARA822400531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc8991bdb41ccb4c4e025aa00bcea711ee75de60e36d886dc7dcb475d749afc. 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/ARA822400532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc961bf186590460269fb2f046d833f22d90b138400fadc0fda479c2fc1664806. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/ARA822400533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d9529ed3714c9f666ed8e840acdf939cc65342a863f0b4402b1679c259b6fd. 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/ARA822400525.
Cerveza, Gaitas y Punk Rock: La Máxima Emocion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011fc8da4f06df6a03bfcfd105c890bd46b15f8358ef666f4e2365d29279c9d2. 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/ARA822400508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8d061e47c6214475e10f3f7b5137e57394cc72e06630d6a66a34d69426c71b. 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/ARA822400509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2a691648a48c92735c982cbb5409fe2b5c3c2a81b5840baa8c5c267d38dea5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARA822400510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29ba26f85cad71ab6a511adba019cbd6b31efb037f9ec952fd6e42d323ccf42. 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/ARA822400515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ebc15849c1320e42db664853309895844fb760a17f6fce0d26a58976baa705. 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/ARA822400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedb1224db41b2a9bbaf0ce6fb54c4c44dc681415217bf502a775b0fffe995f5. 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/ARA822400507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548011a257a7a594fe2609a3a437306e3a77813178e87c5b1f7bcaf4182c593b. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ARA822400511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048dc73669bbb8df0d3e03028084a780b726c836180fd6a0010c4220dbfc50ce. 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/ARA822400512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346cae0683067c9de9a74c7f1b828607d228824f2c360189e5c0ac750e6f15bd. 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/ARA822400514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66aaed85444da783628677c529eb535c58fade31a4edd7a5ab150ffc85ce49a0. 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/ARA822400478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db8bef44854b2ea7581f3bc8659368af74389c11b832bd3e919cd4c607e7b43. 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/ARA822400480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfa9d7a5e17cdc530eda537d8580f52f0bed1c4b151d425d63c05811a5a73c8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARA822400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb970772befddc9144b37af808e7ab266d5b83ee39e8530907af4f48939c9b1df. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ARA822400473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c99b69663da4bc8acb00d8d85fab394696e8987b41bdb6633459589d3fdec9c. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/ARA822400474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575fb4957b9db8d6a7e5a8aaefc99a2b8493606c6955e41fd521f66eefed9874. 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/ARA822400477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea5c71e5dff9ce11a4806971b9644cb75c83c93c19ba2e4ca767b7bb897a01f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ARA822400481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd04816085ea2973a305a7fbe2c997f2ef2698460c76ab388f1be913a55a6f3. 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/ARA822400485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69996c1acbbe991328f947ed856de4f708b332d8d4379979e112aec2cd7d321a. 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/ARA822400491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2c11c6de12520c97da2d60441c9ca0eaa199c60eea0bb1fbc69f4d32fa1139. 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/ARA822400492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590e120d449e84a3667e62a5ea074f8e50df2b7463e7f5b0c8cfe7903647a3ac. 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/ARA822400494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54cffeb1fd828681b20def66237f7142bc4e363e4fab50eaf6f26ceb849874b. 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/ARA822400496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ca38f630562515485200469821628ea2d28406e163f092df11f790957bbc5f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ARA822400499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c727c1649f393f2d75ea50a651523d6db4204196d9c0ff3b8561e524cbc39c. 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/ARA822400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0281dc179ba283685c0f9ad60ab6b69bb79d952ba25436f84f5f28b5855b0bcc. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ARA822400490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc5005063c2b33743942d575f5a08b7bfb5cb9a723aca8b65ee3dba8bd4fa7c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ARA822400493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad53a11658f5c0419279d3e3d6078291a11de1ca87bae81f8a7f043cc11dc06f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ARA822400495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bb03f8f0a1e512639274a758e60fcd8aca33c4cf550f491a5ed88c14145918. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ARA822400497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d7ea0d62d726cd3837f45eafca7bed105c7c050cd45f9cf266ac8435b5a570. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ARA822400498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb48e2064c52add3900819f1bf0900925c17934507d7d26076445af9405b5eec. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/ARA822400500.