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 0xf0205e982cdf83f1a7b5bb53c420f27be2aee2ac941d363efb35f823e02f473e. 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/e35f09ed-a40c-470f-8dc6-c6a6bb14d52d.json and https://artists.proofprofile.net/proofs/artist/e35f09ed-a40c-470f-8dc6-c6a6bb14d52d.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 0x27ec7150617835046cbc24c0ca65ab9ffa2b82eada83dae5b7472f0a900f4a31. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ESA011205974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f40659b221e708f089ff0d543f69651398b5c464fff7f7501be1b0823282539. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/ESA011206315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55bb5b38ddece46d8761e4c46b0a1a6ed0f8f7b88a2934f8e4db0efb792aa32. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/ES22G1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967b9321f712ff17fa9b5882472ad67e22375549de0ef79ae9e6ded372b7f35e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES22G1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc76ad4b7f252d977e35296bf32431282f932d6076e4858666020e92d98e71c. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/ES22G1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5dc5a89235ee274caf5f628e30c3553c0962e5d84064f32d13b9e3390c5553. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/ES22G1200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa6c221070ae823352920f3a59e6e8d0eda4c29fa78a1865fc34a6762c9a076. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ESA011307323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41680a6beaffa47f2f0f788d1187b1d53694a800891fa8f8f9900525e5ee0ad5. 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/ESA011307324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c746b8305854643130f0846e84a3eb4d9d24ebaa1c23bf9fbcd719a7b076098. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ES71G1511531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bfa46954c1cce86c90dccd20b29e2485bb8ecd85cf2ed07e0b72f589d0e76d. 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/ES71G1807326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dde34b5ed993a767fe36ff0a09231daf8013ff603a8494dd378aa9e47e8bd5. 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/ES71G1807327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424758904ac6de358317ae7664d4f50ebacf59ad2c355a60b0f01ff38609c2f0. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ES71G1807328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a58197eecdd024fd3b9c0d3d3dfbb4e368fe149ead255ffef883424a690fc1. 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/ES71G1807329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0faab62ed5d73d92d33e6bb9475a231a5f0fab92d9572e18f8da5b44b0d60517. 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/ES71G1770956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54687fcdcd56bc9e84028d52b04d75e88b4ff8b3b8f8b940ac505321f44ddaf4. 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/ES71G1807330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67a5b92ab34b3dd35f727499290aad0d268694f499c12f9f5278e42f4c6e320. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ES71G1807331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da5f9c22a6bef12937d9b5baca415a101666ae718a87ff371c190266f9223ca. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ES71G1807332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dc49c6bcaa58ad2e444d8f1aa3b431eb69cf0498036b07e37e1ef2222bf7de. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ES71G1807333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e90c9110c12e4be64497385cf62ebf688bf0e6c305649cdc7ffd345b5a347e4. 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/ES71G1807334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5a2babec157989b1ae8f76d165e3fd4a109943f97a9e475a7836a44dfea713. 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/ES71G1807335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c913bb7e1752500b7ce690f1a562bef0d59d6a3c8fce4e54166d215a22d7d99. 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/ES71G1807336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a58197eecdd024fd3b9c0d3d3dfbb4e368fe149ead255ffef883424a690fc1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES71G1807329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54687fcdcd56bc9e84028d52b04d75e88b4ff8b3b8f8b940ac505321f44ddaf4. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/ES71G1807330.
Cantant Rebel (Mon DJ & Albert Kick Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c706dcaab8ba784f7ecc982705d30f4e020cf2396510101454d883d40d1579. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/ES71G2054565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae9caaae96c2f2d765716e68d301b98313648e5d5d43081ea6029a54002bc5a. 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/ES71G2211514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74eaceac8a57a597b1c1325a8775a9f52394af79f9262054ca7c1e90c3f7dc72. 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/ES71G2211516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5a4162b894aef0ec409bd61146846c8ec93b48c26769680c1392db860424ac. 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/ES71G2060078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5857b3cdd61dc36a77ba9b2bdca14825890907acf44cdd25dd78ca2601ce374. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES86D2400415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac175958b12b6e0d246081805c5389605f05caa12cae736d6b2f7bdd2e76d872. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ES86D2400456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d55d3d1447a369b4dd64735a893b403e6ffba6fc9cfbfc147c3e5eeca42baf1. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ES62D2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd585af7cd55f68657fb27dd5f8b87bba1b9412d0c6ffe3cff581df0a6fcc6bdc. 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/ES17D1800461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47b04e325a0a488529c21c0a5a90cbb7814ab959c730624ac3deb41caed956d. 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/ES5951304626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a52cedc6e86c0bd6dc8b6904a4d9bd6ac09471343c6ae107efb8d3a1be56722. 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/ES8022100159.