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 0xef6088b0ca9cc4c1969f45e667a86cff84df96b4d13e127e03dea9df164d6e9f. 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/2fd7586d-a636-4ee5-a6f2-0dbd78a0c2bd.json and https://artists.proofprofile.net/proofs/artist/2fd7586d-a636-4ee5-a6f2-0dbd78a0c2bd.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 0xeddd89343e2c7e934ccd322c271ba7e3e44517ccb49127560d35a73d3cf1b7f0. 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/ITVKL1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609adbff3692fd0bb1e7488a0d5abc5e2ff45bcaf05d90a6ee3c7e49fa5ddb11. 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/ITVKL1800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf79e5092aae5fa0422f9c9d7ea5c1ddcbc6940fe6e1bca9111a4166bc474aa. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ITVKL1800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e9ab9870346f0547ecf46a6e7267f6b552afb1105c154aee4bf4e52de1989c. 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/ITVKL1900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885792f98cc6c81b7cd05e6ed1452756f6d6a3a948ca06a96c4634a0887ea12d. 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/ITVKL1900083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38533c8d5b3b2d47b080b823ea714527856f375f86f7464fd696745c01ebc6c. 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/ITVKL2000219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff8cd00db53c49cb154c2f5e4fba8694794e7c23953823fea57d1ca795aff07. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/ITB002201012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcc12e061d1b89ad5819bb879f80542f8108647345ad5bfb679ef367e7b58a2. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ITVKL2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37eb3fb2d175b422bd18fbaa92a67dcf31956f89db73734cd2670348f3212df. 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/ITVKL2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385fcd6a7c87601fb528523482f645aad22e88072150abf29186a5499b38d400. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:31:21Z), 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/ITVKL2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275f6231ba0427a54606a7234a88b8b4b77e774743bea149c508ab0480c80fb7. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ITVKL2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd1ad43f2f9a5b9c88ff9252660e536af5257c3e4c080f88457d97c3e9d5460. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:03:26Z), 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/ITVKL2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99394ec6881ff13458ecb7a99c9ceb7320496766187fc29076523188a75610bb. 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/ITVKL2300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408fc5468399f04e855d055e8ba38e121b2e996cb1e22b4af839b5c650a85789. 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/ITVKL2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd035f5f18971b2ff02698d8db80ecb076ca8ed9c87df92dc9e9b76d267c6c0. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/ITVKL2300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3974ca2326f76c274397f133915d6eacb204e7cdcaafffa00040b10f5e3c252d. 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/ITVKL2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1d8127e008f5b6609d5060e1b9a3e8740f2343670a01ff129fbab8c85ed51c. 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/ITVKL2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343ec031c50817a713471a9d3451bb42b30550c9698c027d0a6d0104cb4112dc. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/US38Y2431553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fb3d834b87f6fb35710d246e9d00bec42b4ac8d9b9a6f5e033e77dcfd46002. 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/ITQQK1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1799fc4f939bc3d03de2dc26be4d46122b85bda3d7ae597c4af1f867efe3c5. 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/FR2X41687272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790904e122c1764af7bb22427390a1889cc8deb62096af88d1b127e07722432d. 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/FR2X41687273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e62045af2046868bf8ac750318a2b91d7734eb089ec591184e267b6ef952de. 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/FR2X41687274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf872d409af0a048ab2845cf7baa5960a531ecc1a6bf70342198b6f92f9c18f2a. 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/FR2X41687275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3593bdc75bc50d2e4e5e4d4a8d8733a4d8d0953810e416a615e09df1bfcc754. 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/FR2X41687276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a3f7662bc61848975e242df5d1cbef9b05a9c3c93fa919d9144573a775629b. 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/FR2X41687277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d521857cc23fef733a3905633061ead4451b88130daabdfcd1e00be8897d7e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2X41687278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4978d20b685e7d6546203e04fec8d5fc1a5b0db86f16e59bd8e5d2ad3ae6b7a0. 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/FR2X41687279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd7424e33a168cb78ffaf4b8d1fe2bfb999b4339a9229b27f0574abde459d47. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2X41687280.
Blah Blah Blah (with Capo Plaza, Peppe Soks & Christian Revo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6cb88a27893db1ad99a615bffddbdb9dfef4e5753e9e80ce33fa70ff9ce4f0. 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/ITF251700180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ad2005d9d4b42a800270d830f7126793b5add94795daed3f6b8ac7e67e4c43. 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/FR2X41565405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0694a7486733580351791e97bd1c42bf79ec2ea0a74db58bf344479246fc0065. 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/FR2X41565386.
NUN O SAJE (feat. Random, Peppe Soks, O'Tsunami)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04bb980f6736d6cca2370344712076f7423f7fece38fe7976b3959568db22cd. 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/ITVU12500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb3c548fdd7039b88a2dcc9c24618d2e69310b13e7ef1818800f33f00872fea. 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/ITVU12500030.
SUD MOST WANTED (feat. Peppe Soks, Lil Parta, SKT, Enzo Benz, Welo, Kid Lost, O'Tsunami)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b520af000daba3428b7c27898257047ead5954c2a7836f86aa02edaf7976d4c. 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/ITVU12500003.