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 0x3ba101d2ab44ad0b6bda5151a9bf88398f18b4ad445df85d32ac4bfd43b67e1d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cd1e62f-0649-449c-bb35-ac91e3b6f0c7.json and https://artists.proofprofile.net/proofs/artist/7cd1e62f-0649-449c-bb35-ac91e3b6f0c7.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 0xb3c8e6b6298635cff2f81bce97020d9c25a2548a429490e46339dcc152d1fe0a. 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/QMBZ91550198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f6393ccbf7fa2248f3da6e60be58d5267205a0795ab820f0eb39a1e59119f0. 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/QMBZ91550200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732be954792c67d57c53a9df2e1f5be25c5355fde429e8a440a893e8fc018686. 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/QMBZ91550202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958978951ffcbc35d7522150dbdf14d3bdfe6cf95e8a8ee87309650bc77626eb. 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/QMBZ91550203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e409e574b2bed251dace50ab69a8d1f3f6506332ac608b299e17044c8f867f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QMBZ91550205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe299ca80e583d82ad55f127f9f9bb8767158354624ad203e62e871f5467a6420. 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/QMFME1541435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753db516713f072941fd3d2ff6591af1dafd18b2d35b2b29603ebe00a027965b. 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/QMFME1541437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c245d537865bde1762b365432bad6be0c891d5faaeed7506d7f926a26e1ae45. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QM7282059780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e55970060b223dd3aa2ef3292952d0f5bd269dacfef2519892580d07612a6e2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QM7282059781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183d09036ee2bdd6217b81d6b143dc900be4c70ef8990bb82eeeca17c24fb9a2. 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/QM7282059784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a58f1a1e6f83229916662b565acebd743ffa208314faf3157a7b741581d93b. 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/QM7282059785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86b7a1088de026f9afe004150e6e74ebd21f3eeadd8658b178087ed3ba612fa. 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/QMBZ92035852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d52f3747e06268d979e64e8eeaeadc55c6e348dc508a69bd2df42af1fb597a. 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/QM7282059791.
El divo de Juárez vive: Tributo al Más Grande
He Venido a Pedirte Perdón (Adiós Mi Amor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6761e834ca0bffef3264241150cb25f2d3941080588d324170c743fa0bd0a5. 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/QMBZ91633096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5351ad9dd5395d7d5d4d1f6be26d611de593bfe2d61176c10f50f50efff64359. 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/QMBZ91633098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472db0a21c98cc347088c3d7b231b5cc537149cf11ed1a0c77b29ee9516124bd. 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/QMBZ91633099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368d77ebca51975fd9d015f5645911b5b1dcc029542449be678517ee0dc3f3e3. 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/QMBZ91633100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec646b6844909cff98d7037d852edf35fc8c80f79b0374d1bd70e2689605cb7. 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/QMBZ91633101.
La Diferencia (En Tu Lugar Si Te Amaría)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190a59f78add9282faf6e227c69d3bc9b98b17c95549b1398df099249b93f02. 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/QMBZ91633102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e87f86e0765e5442ca8aae793a7613bffb97d7b475906e7bd8a7bf1b7bf731. 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/QMBZ91633103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646a5f7be2d870a9d0bde48076f47abbd232829cabbf05ae5c31cb8a4a7121dd. 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/QMBZ91633105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ff748d63394caa6af60c3ead243a61ffaaf6fa360cd73d0adbd9e2213e0e9b. 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/QMBZ91633106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63892e1ab9fdcdf238510f1477e92603346e0d23d19282360453f15072267b7b. 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/TCACA1402460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bd969bdb9d99adc68ead0fff4249d19a07684b29a19f684038d3d3fa6f8528. 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/TCACA1402462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cca9a56651065bb7128844ee6aa5eeb4ba751208ee7107485737eae9025338e. 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/TCACA1402463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8271b6ef29462de963cea94e389d71c00901c4075c76f4d691faa8c2ec56eee. 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/TCACA1402467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaf0f71081c5c220ad030e4fe933265b021c7721ba94730e783bc2bfff72e65. 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/TCACA1402468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cec988494bbe3d437035f18f28656f7ecc956d2a8311a585e0f6b3d8880ec5. 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/TCACA1402473.
Navidad A Toda Mach: Navidad Navidad/Santa Claus llegó A La Ciudad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d23c2f604b3b7a9b627359a4cc3ce825d645d4ab67e5402fc96ecf563eead1. 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/QM7282493145.
Mach Mix: Al Gato Y Al Ratón / La Culebra / La Pachanga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf148ef59c919bde6b43a40e7e74212dd5bf7ea3bdb7204b9b67f3b90be4975. 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/QM6N22499329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af7d45d0a71b34b093ef33cc729bb854216005682d53e169452cccc4b5e6813. 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/QMFME2117613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff37cba17640712494580a6b221d7590f6f646704d1b225f23652ba6a8d0be0. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QMFME2117611.