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 0x4f02af145794416066ecef9f7d30cb307d58417dc3fd52c186d50636c44f7175. 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/a5abc138-d46e-4fc6-aaad-e2f6ea7032b3.json and https://artists.proofprofile.net/proofs/artist/a5abc138-d46e-4fc6-aaad-e2f6ea7032b3.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 0x169ceee2d965a80291ba0d9787c1346948fad7b6801e4a1ecb10910e9bd93d33. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHNA2389906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf88a835fa8ffe8903cd7dbea13f59a523b87b4c50085305f9e1aa12a96ffe72. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:07:54Z), 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/QZK6L2355659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c8bd9297a0480b25687f715cb480f24b73e698f58d0abd944192ba150f238f. 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/QZK6L2357314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7e1282fa48f5ca73f6268f95a4ce9b0ed2e4f5406687fde610e154ea170235. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/QZK6L2357316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e530949f99c7ccecb3146a8f5cafcc3fc68e581280b02b467753dd2645eb3d. 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/QZNWZ2323372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335db20391e818595f4d6d6cd01c23eebaed7061f1ed42d77b7fbd7d85e67460. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/QZNWZ2327392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc723a8c030182ee3c1066ba91c9399e0867aa7255accf7fca2087bd5a1e0377e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZNWZ2329056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421ce2a76beb177229d87b0577bb5838d198f28c099a2edd006a6a3c2beb5f3b. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:09:52Z), 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/QZNWZ2322303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975cc834bc4b61503614d436aa59d1b08861c2012c2d6e43a2a124cc881263c0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:42:14Z), 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/QZNWZ2329047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e52f49b9172bb7f2a711ff2b2370ced5c02e606430eb30f3ec2071c373b6780. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWZ2313726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a84e9035f306708e65b3b1673557bf7bc150b3fd632e8d1fc7e33b86f1cd6d. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:22:20Z), 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/QZTAW2348571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bd9e5fd7017914c38da5919728cd746c55627e7759182a2974a7c852de577d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTAW2345557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2942fdc170a0d1b154059e664157cd0f4a16887be50541d9a477b7d79476e2ae. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZTAW2348580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6610a01540c88600c2d3c875f8beb30bd088dbcb8f6ca0a19dfe86133b6270a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZTBC2395063.
Amigos No Por favor (Cover al estilo Tumbado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c52d27064f243cbe8b688e72adfdd06e1a5069adaf47e413fb49f4331ae2f7. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFG2472287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30caa1187b210a9354b3101ac0028145c7262e7d5261064595b24e563570ba85. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZK6J2556786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa935117b667cab54ca23acb000c16f249cd07401c3bce6d2e636d82804e2a395. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6J2556787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd912b61efe1d9096fe542a3d6953b2cab0e9c9e2aec114afc51aad848a3f4364. 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/QZK6M2560788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c22f1da6815921ae12a5ae702f5d70fb2214309f3095eef81f6423c141a181. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:24:42Z), 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/QT3EX2570214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2431f209059b18eb6abcdcd568d60d84c3fa2e44068823826eb813e4c093fc. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QT6EC2588663.