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 0x620d26247a039544bd25b9c54446e5704789145b1699159b046882d3bfd66a59. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/500e3b9d-59cd-411f-9f89-ca3d425ebbae.json and https://artists.proofprofile.net/proofs/artist/500e3b9d-59cd-411f-9f89-ca3d425ebbae.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 0x59edd69578140340718d46338d9e631cb1a23a219aefffd17ea8348c8de278f3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM4TX2339654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08469afccdec63caa71a2f8ac4bdfb6025c9956f2a4326c5b0393dff248c4e4b. 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/QMFMG1564838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb013d4cea7376f9275c166867cc2a98ff2667a8956dc72645f1871f36c95335f. 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/QMFMG1564839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529a97b5aea2c81314d842148dea055383b0523ef52bd1cd9b9d55baa87f534a. 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/QMFMG1564841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc11e81b114e25c82b96d9b5e8806374c8e1167915347c589da82f568c291f6. 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/QMFMG1564842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34caeadd490c242b8a74e3951afb46cbc397e4ae9d54ee82a1d8a4f66c1f5b5b. 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/QMFMG1564843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b607a79905790e3ad99f474bd190e491db1d2cf1ca9f2e72c05f8719cbacdb. 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/QMFMG1564845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2830c0d05594c8d912599b1013b5f22697f1e7f0df57b56f18b6af73f742c374. 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/QMFMG1564840.
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 0x5146de41fc4c5b4e8c8528c2378c913b4a28bb031b75498aa8afe89c22aed3b5. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/QMFMG1564844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843958ab1fec4d438df0d9da046fdc5d3862398ea902db1d5844c2e613528195. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QMFMG1564846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035a5ffbd0f900ce15ca2e379d7d9c71e5c302f6fbfb6e77813f1008f8d75676. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM4TW2263087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bb1bf92f35487ec02a5d675779af3ad0c4459cf4ae1eb36dba34da2302a706. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:35:20Z), 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/QM4TW2263088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f075ee446eb43fd2841af50291bcc68b99de1ac11d600e9732b7986dba8b52d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QM4TW2263089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf825c46fd0f4e1b87eb4e3d8ef808ef534061ca64e5ebfc63455bc365b0bda44. 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/QM4TW2263090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28348ace24732dad31dfcb5ca20356dd9d36d2dca3f194159434bb8f85e134c4. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QM6P42376723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ac41513f8b8a66445b382e9cc4593a8a8aca0c54db7d12eb7e085fa0e4f260. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QM6P42376726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4aa58305a17dfe6aa7ea22620ffe6256dc02861fcb0ccf31e64d5cd26992a00. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QM6P42376729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29a2c81fdec36ec779ff2d00a1ed3a96b0e98e0ea9cc640f303cfb130ae9464. 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/USDHM1317001.
La Inevitable Tentación de Ir a Contramano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a9c434db46f26bf9bb6914417517e580951e33e7d5038a425e2dbf62a92a62. 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/ARRDJ2400008.