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 0x1ddb5f8f8de85cb60913095145759fc78d5108b53bf84638df0e4c0518e77d6c. 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/8fcac1f7-2dc2-438b-b044-ebe2949f97b4.json and https://artists.proofprofile.net/proofs/artist/8fcac1f7-2dc2-438b-b044-ebe2949f97b4.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 0x70672081bea7f418d6ea0d36e7383ca1ecb30939b5d172b3ba889abe0ce0bf71. 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/QZNJV2035218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37001bbd89cea81b4ead60986c3db1386b9a571d9f65c92e8daa81f227aa8142. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNJV2035220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8171861c4ce4094de026fd404da592beae63bf303265d34ebcade27bf465ef. 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/QZNJV2035222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4006051d11bcdf4e7a323760a1d008f1269e53414fa91eed6ed8e7d49d47bff0. 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/QZNJV2035223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc22b7eec0a53811ba1bbe531586de6dd1410acf7eac5c5d2d7e81423a82708. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNJV2035225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b14a1d5d1bc5b8c6a113a128fabf3a79819d2fbb804ec7dfd8972fdac84a07f. 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/QZNJV2035226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94117ad31cf2935c601994158ee0f5d3508001cbc35c30ea968a45ec05f9fff. 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/QZNJV2035227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051af4f75ad2592d0e712f38cc3c0644c7da98736bae7762b5cc6e0933d477db. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJV2035228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffb74a845379cfa14cc58691674013b89e0b70a0bafdb0c535fe75292ee530b. 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/QZNJV2035230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d20338185612bdb4e7a562640a4184d8b9b0e878103bcf76ecc03a6d6965ca6. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T16:29:55Z), 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/QZNJV2035231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ca1ceab177de0e5ee65936316f50faa13a1599c7a02a77745b60de732fe8e9. 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/QZNJV2035232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13fed4dd022f2449b203830ec9153c238af8e28660df950cc946419efd7762d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJV2035233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fd02d05805f1ccdbf87e50beaafd920a75b7780bd79e89d792229afb5beeb2. 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/QZNJV2035234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0f4d360bd738bf8b126f34a89411d55c6d80d3db5e4bbb317ab7a478be408e. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZNJV2035215.
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 0x4589b5a8b18ea04bef0033f48310c16bce98c146f14c662d2187d3f1a206878d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNJV2035216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e23ba79187dce56799d8c9d123e8ff9262b6af0e7eafee04e2afa162dcc1c70. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZNJV2035217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ca717b174278a9443192482628201b7cee3de1e56f99b5f883f4054c605768. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNJV2035219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2879d68606e4b0af860d71c9d21ee83dd5e7b9cf1dce53c3264f46f0dbb887d7. 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/QZNJV2035221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc23fd9c15783107a5d1f82385cb02765fd6edd6e24ba962e93f67d8d0fbcddb. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/QZNJV2035224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9a3b67fdb06f0c0bc9ad84510b833024d1db019de696cc8a2e8a3f30f86056. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNJV2035229.
Mix Recuerdos: Todo Lo Aprendí de Ti / Amor Se Escribe Con Llanto / Ya Será Tarde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5c8472df61f617122f1da7dfb63495c6b6925715856739ab844ab5b73847ad. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHZ32149165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622447117079393fddff94ab43a04d380b1c9907b75b2c7d5538a99a5da4a09d. 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/QZHZ32120788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd8a776f925163ee0dab893ea45d41b025591ba35a043206c8d59bfca413527. 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/QZHZ42279454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5681530c254f6d771f54338cedddaec4e95940eb89f7329b074d5aba4dad7a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZMZ92370533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6621c0dedd8159bc17aee8be100a801d01d3b23b2bba8c9d0e28009f039b14. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTPX2368815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a72660c2bba7b685d7743332d606b43963ef2a41678fa7b5e392e6585ff9a9e. 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/QZ5AB2465468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270e04a111cdf2b7c441a63633409feb3f69ef799c9e68ce359e160f80e9c598. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNJZ2477309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17c01666e44a4f7940c24e2c9ec0684daadf83e5fec18f9f926ddd359183427. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZMZ92500177.
Siempre Te Amaré, Higuinio Capuñay por Siempre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaff940e011e0241576ae663108c6f41bf25506ed76e8193f33e7ed3c53f01c7. 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/QZGLM2333148.