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 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 0x062fff630b1ee1d22480013379d7219fc1e7c196aba7f42c042cb0447236e828. 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/0b0fd73e-1d46-4358-b5f0-c37b81c440db.json and https://artists.proofprofile.net/proofs/artist/0b0fd73e-1d46-4358-b5f0-c37b81c440db.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 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 0xffe0d7b7b3483473303e43e2be2ebe58390cbdc56be20cc8844332f705ca4069. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CH9181300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a3a7d8cf57f337c767ab309b688265c4b004493d55602e0eb805726f3d6123. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CANG71600022.
Cuba Esta de Moda (Remix) [feat. Srta. Dayana, Micha, Divan, Jay Maly & El Chacal]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc79d1fb63597ca20cf0732637b6eba1334a34ef9eb176142c72cf626e8c4f5. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USDXS1702546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83f8052aa0b6de6e9634da3e2edf5ae32f8589fd5da388c47908996d9de3e65. 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/USUM71709664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6de0a7656a4eb6a9e8b85a59c816c90e9239254a4964a63430d1c7ed7c49d9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USUM71802747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce19fdf6b2c64887926c67cd4514c91e1081c29469c2811756b4cc73008bfc5. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/USUM71821738.
Mama (Prod. by Ernesto Losa, Roberto Ferrante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1744cb697cb3e7dcf44f68ed79bfa4db972b1103e35fe1a857ae9c99508ebf. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZNJX2342567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598ab29bd346e653411bba4d06557f285f4997f0a8b435ea2fe34beeb0f8098a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZW9K2306446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0964017ce0345d19cda40871d52b4c03eac82503aa7f39c44591cacc0ddbd421. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZ5AB2465077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526de163b8e6382f33bb931209a7245305e7cdb9fa9644a9257268b5515fb466. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWDW2441069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae67c38fac411d49c78fb90192f66199a2d6e482ae24c8a6cb54b410d652931. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZWDW2454789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6816a168a3672e0367c945371dd70547d16da1adc6b3abd2abaf947819347b5d. 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/QZWDW2465281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e1cd452dec41235b2c48918e60be53affdfd1927e6a30d179909240077f113. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZYFZ2423441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526de163b8e6382f33bb931209a7245305e7cdb9fa9644a9257268b5515fb466. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWDW2441069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae67c38fac411d49c78fb90192f66199a2d6e482ae24c8a6cb54b410d652931. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T16:28:12Z), 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/QZWDW2454789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7118591604db0f9c88b0c7c009ebd392f5361fb9195c5334a3b04cc32d6d27f5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZN882402016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6816a168a3672e0367c945371dd70547d16da1adc6b3abd2abaf947819347b5d. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZWDW2465281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7971b9f8d7445770c73703e31be49c2a56fef70983936dd4465829677d54c0a0. 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/ITF250900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6de0a7656a4eb6a9e8b85a59c816c90e9239254a4964a63430d1c7ed7c49d9. Chain 2 (Bitcoin): anchored in block 956995 (2026-07-07T04:27:57Z), 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/USUM71802747.
Dime Lo Que Hay (A La Roca o Strike) [with Yulien Oviedo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a7ae90b0f17ab13374f3473adb3de44707e1e36bb86b1163b398b2048caf41. 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/ITF251200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59786a4f96c27b93113fd6d42769e14e7e905b1671f9b4609f6719fb0780c489. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/ITF250800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59786a4f96c27b93113fd6d42769e14e7e905b1671f9b4609f6719fb0780c489. 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/ITF250800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59786a4f96c27b93113fd6d42769e14e7e905b1671f9b4609f6719fb0780c489. 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/ITF250800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17780d7df0b2cf34fd832d59eaf1279ada0a12c0bc8adf6ddb60bc65675b6d2b. 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/QM6N21966369.
Latino 42 - Salsa Bachata Merengue Reggaeton
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe412d53586eb85032142ab88e9f4d93c4dc135919d2e4018ff480e94fcd06f4c. 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/ITF251100023.