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 0x0e55a4cb06ada43ab6ef93de24cb7c7515880102ec741c38dace39b87603d77d. 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/7dba1e93-beca-4d3f-a093-b6b1dfc7452d.json and https://artists.proofprofile.net/proofs/artist/7dba1e93-beca-4d3f-a093-b6b1dfc7452d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vox Populi - Capítulo I: De regreso al comienzo
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 0xac1b82c71728abd9d82f69d33410c8f9755438bdca5fc4fb2ddd3ff2308c57c3. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZGLS2220163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653a405cef3fb75b2d687db3e7a6a625148a8c9cd9835011041929aee209cb93. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZGLS2220165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109cb2d52fc3a67acd539f8938bba5384c82937d713bddda8d5b350c0343e136. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:01:11Z), 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/QZGLS2220168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68ec98b518ee48a5d51b30e6cccb1a546c721e703c74e3aa6e31bd4479a280b. 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/MX3741401016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ad2c812836a40a420867291385cb6863fc2996102c153037161ea2668fa41c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/MX3741401018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ba4ebc60d474131b033d4d7fd9eef621b95b8a88b1e6b8065fd6bf8ba6f09b. 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/MX3741401019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e73564782ee8a514b3d33ec689fa00b10f7c70ed1467a0ef6757ba24ed152ad. 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/MX3741401020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d609d90086a07c174c11de3523e8ac8d56cc7e62f70ae2749ba597a4cb367db. 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/MX3741401021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c7e5ec400f94c67c2fb39f55499addc9678f1e08dd14667a26524f179fa1ff. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/MX3741401022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921dcb9b992196c00d1ce93f0208f9e1d2dc7ce685048eb5ffa04294911f7d4e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/MX3741401023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e87f60bf4ae6a689e649f8dfd037bbb853205c91556790a264bb21d420ff6a. 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/MX3741401024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099e8f03b0270de0472fb36a4f90f4f1d07babc6980ef72167b91cc3abe861bb. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/MX3741401025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1f6e0be6e2fb62cf8f4025f51fe149c5fe69ddb1040f6d4cce1268e5465081. 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/MX3741401026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64aba7f69e1c18a4dc1d27d2b95b68c3d192fb45fb2037bc6dede0b3746bef3c. 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/MX3741401027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4ac326dbc1370f7cb91580fa9be7ceeb6d6e09d17539cbdb762f771fd93963. 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/MX3741401028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91da159f823ada4526ba61c8e805884a07e7125700f28c1e9dbf5b2bc5c782cc. 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/MX3741401029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7095f23012bf180bced6ca3d19133453f7e69dc39397430df13b154c568f533. 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/MX3741401030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9a69645fa234703663be2a06b788e7fd19096b71e7bd8d0207d7005517ca5a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/MX3741401031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23e360db676d5aaf5a3fd0a932fdc3fbb9e51badc5ccac00fb3ebaab8fd54b4. 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/MX3741401032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688c1ad8864c4c1303e46bb79a9aaf299252b04fa0a7eb039524ad8169c14f48. 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/MX3741401034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff269370f5a632655e77c251486c08fd25ff4917810b99e6800aa77713157683. 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/MX3741401036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7c58c1d2c26b5dc847c70379026afaab1c134d2961af7bf8e6182a523a79b3. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZMZ92292512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bd0615b696d8a78d078c47a50da58a47f173f43df905eea9d4b5df6771d58c. 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/QZ5AB1984111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2778909aece2bbb3f53965b0e520291afe8c798180ccde1dd0b974a3c3aa6995. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ5AB1984119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2519ea4cc75cbd415cbd0fa186e8ce73d200c7aafa2166f48f5fa87d4b5a2034. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US7VG1713842.
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 0x247317477eec3b31bc6555ddfc2a7e32c4148d226d70447cb9c4ac955c1c672a. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZ5AB1984113.