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 0x70c13c19d9496445197656bf1b36e953a4591d3dd2968cc1c399ca8f66eb74c5. 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/e918cb57-7438-4eb0-afbc-361769db614b.json and https://artists.proofprofile.net/proofs/artist/e918cb57-7438-4eb0-afbc-361769db614b.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 0xef6844136af06870e4222236efdbfbe5306d675efbcb9e2b46df0890e0092a3a. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/MX2621281459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118c0d4add975c5d88b0b1f73aa1f9074258e54d3de9b647086530a29d86e93e. 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/MX2621281497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4751547836a7c91fc1f646ee665836b068841aec6e7e47351c9585d9727bbfe1. 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/MX2621281502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232ae86adc8f62090b661afe5f6761289eb9fc04c6a22bc90b310766419f9dae. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/MX2621273651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1b088609e430d892f6ec057e33918eb5a8105e6b4141f89c06095eadcc9ddb. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/MX2621273660.
Los Recuerdos Están Hechos de Esto Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6795047e237d31d2588b3c96b54cd02f2aa5b24c0ad2bb6ed8bfb5facfd4256a. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/MX2621376465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fe555ddb9da1c857b229ba515ac17f04214f2dabed7e7953e5d07815851f5c. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/MX2621376467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74f47cdf2273ccabf3a7e3e42324fac7e9e076b9f808a010c5235ff9d482ad9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/MX2621376468.
Los Recuerdos Están Hechos de Esto, Vol. 1
Los Recuerdos Están Hechos de Esto, Vol. 2
Los Recuerdos Están Hechos de Esto Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16628e50331d123c86e387e3f6365f0cf3cc8d694e72a1eeb43b679fe508ad6. 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/MX2621376477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4e10ab4d2ecdfd61d6d440b944e9e30a35f7536f71db8c7ce4efd0f43a30cc. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/MX2621376483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a18990021f195beb1d599da229dcdd2c3b1fd02fe7d119ff2be52ae19af7f1. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/MX2621376489.
I Love You (Say It With Music): Love Instrumental Vol. 3
I Love You (Say It With Music): Love Instrumental, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0c2e08e6f25e1428cebcad638504695f3a22776ebe85688e87ec5d1c4a0344. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MX2621376471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5d0ff9be8c15b5c74162195116a290cc93d43414a674ee8ed8dc9e37ecdd83. 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/MX2621274145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e1d9a70a134ed185637d8e9bead104ba4a41e99332931bf27f8691647ef4d0. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/MX2621274146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580fb7c1be393f79e21f693d142b4485cf28ce9513180b4eddee97182f067d90. 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/MX2621274152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a32481bd4e12da3b6171b0f391c8e5cdbd7af72e1de5b0a776f216d7e3ca0cb. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/MX2621274143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc62c4c864e18514b3ceba2b346aea8ea3ed89285693ebf045db436bd29a647. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/MX2621274150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77435581e8a05c9ac41b0a1a40cb0dc0beee39765984fdee1335939d178b1c93. 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/MX2621274153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2a4d54d2e23bbb33c0f321c2b73136099d3b26ce9850737a9083edf17b9863. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/MX2621274157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97957419d7f7da637942933b2a2e6fd1c2e9b96326d43838aa441889d2cc3b38. 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/MX2620776718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc642526bfb43bc67aad66e00c348c3a6ddc692865bbc37ad332fca24a0ddfb30. 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/MX2621281486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcd2a62db85aa4f408cfe36bb38654b55d858d4f7adf65777bd658d0c936123. 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/MX2620776742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8907dd8313e3d885ea65484b6839fddd484e4711f91100e1d69431e3c286f7ca. 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/MX2620776756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38609408bf566ef2ec35c2941fb1f0db4c7fb7c4652c35aace0697ab1e08fe24. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/MX2620776759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024e3e7c77db3404643335e5fcbd7cb01b18ceb6c0f6b1445a729eae8b59fd33. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MX2620776763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fff5ee405e5d401d4461cc69df2bcdf46f163f306aeb056a24382dab4653e3. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/MX2620776764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3945daf1d4c278226d86d2b132a4504968b075ebe1aeb9e6a4683d90690c542b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MX2620776765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875d5bf1a29d4b190e7e125c1ecdc83b684852b84dee3a1757613aa8e5471bd4. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/MX2620776770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b1873766d5cf367296ef99db97f46c93085339d09dfb94d0cef32993bc9083. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MX2620776737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659a67c1584baf91557a578cb159977992aaa06f479797f387e0a52dba86eaae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MX2620776739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fec36f1d648cae419c6028e673d5422191fad261cd196ad33b0ee7669600ed3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MX2620776725.