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 0xf77708c4bef9c137dd0a3110469d197b3f065dd323cd47fecd201976d5a1c221. 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/995e4d9c-2608-4cbb-9215-89c4b9ac29b1.json and https://artists.proofprofile.net/proofs/artist/995e4d9c-2608-4cbb-9215-89c4b9ac29b1.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 0x43daab406f68a536ce1fb45a20698f67a1b46c52d0f1d8b3abe323e5c6a261c1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USA2P1444411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfd63cb7afc6c20783563a3951ac41bf6562f9f2c3091a8fed057a333d711d1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ATR981163066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86886fefee925b040e0140a794b91ac8d2aa9481603ca00ade88050d47d60c5. 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/CH6541726842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79576e1808289e9033af9455c3853827d8e5daa09f6737c2cbb35717ac1fbc2a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/CH6541726848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4509062005894995d767629c1c3ee10376521eb74a3666c8199c075bbe0a7510. 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/FRIDO1910091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2b014446d5a3f9057ff157fe8f7552e14a744885314a7f8e2ff8a2f5425dbe. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FRIDO1910097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c202eabf0be06141a0058ae67fd1cb74986177ad0b90f54f29b013074054b7. 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/ATR981210577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3792fca5dc2a49ba4bb21a9adfef2a26d101ae94c4afbebee4617a5e833eff8. 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/ATR981210578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbd407fa9070462f9910c5cec09334deb210f66593b2126ccb2b83084e20d24. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ATR981233058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634fe06eaac241b68a5e6457a223c98eb2a87654b62f5d83d47aec39ab532f0c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ATR981233059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7ae6a21d49084cdabe815dc52f46e26698a7cb6291f8cedf8b8899fd359c74. 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/DEQ022111144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2d4e14920750b8a9665ea64e5790a10b521551652797aeee205b1e43b9a600. 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/DEQ022111150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cab32e8649f42b47b9b8343ab4aef975cc69e33c3c8def5c693452cb6c9a9dc. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/DEQ022111151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc3108316e859a2f2d9f082dad2fdd0ee1b06d9ae47cd422a4a6bab78fe5875. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEQ022111152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c08f0058dc7fe350b006566cc1a1c1022c519797215ef3576e146dcf226b97. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/DEQ022111153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7192fc464559bf14889f22b50137f55b6a20522a4945ea45a31ba1ac0d5f3868. 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/DEQ022290140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cb0c1cdb89fb3756a822d28b3188abcf11b5256e4d1f374f815e272485c167. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEQ022290141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba68ffcee5942406b4ed6948846e7ee33f4fde4a24603667ed1f6780bdb5529. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEQ022290142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26192bab9471cd1a1ed342616edca684268f1b0341abb9af59873a714966a01f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEQ022290144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cb0c1cdb89fb3756a822d28b3188abcf11b5256e4d1f374f815e272485c167. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEQ022290141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26192bab9471cd1a1ed342616edca684268f1b0341abb9af59873a714966a01f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEQ022290144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81c89d03112f986a6a8bada4328a2c7173ee964bb733ca7e5f24c547b9000ae. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEQ022291256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7e68b8355fbc7fa0c0dd15d8693f98fb3b2d8bc3e7a639acf5c5ab8dc5433d. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/ATR981290641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf298c6f94b13bc64756adac9ea760dd0a04342724abfe9142a25b02636ac4d86. 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/ATR981290643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce3445275d6a5d0cfb15064308ba0c50ef0579913880ec7da8fb86745365033. 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/ATR981290646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dadc45721ab9c6e2fe67d7166dff7ff9155e7b52a234464b35ddf5d678ec78. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/FR10S2565514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8721ffed02265a0121c074b2e6ea6f71a4adc246827be1b7956a7adece5c135. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/FR10S2565508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dadc45721ab9c6e2fe67d7166dff7ff9155e7b52a234464b35ddf5d678ec78. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/FR10S2565514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab86885275e40df61fa6f03c7136f6ae9bee960089d6e9aab23a76242aae7e08. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ATR981341229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261c0de00d6b5601760bb7983c121dd958e24cd22feed4b0dc3ab41b2f95d24e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ATR981341230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383e2c945b0ac1f75769d83e0d7bac1314784b5cb12fe1c2376dc55cf010b190. 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/ATR981341231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf54404c4e467b73665ed2b663cad623a4b3870371ec88b63da1ab70d8829d4. 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/ATR981341233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba6a89795ce7ab7c3619fab019c8d8df8bc7a51743e66a2e2988fbfb318704a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ATR981341234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab788e054fcb831c3af1b395545e4b8dfc5e32aaac1c8e835b72158071d29432. 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/ATR981341235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ba77247d13e0efe571e60c6aa093edf32ce6af4d92282d6a4b0721159cd40a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ATR981341236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b22ec5da7f26156a6f7204f9b10bd8b9b49d852f6247f54f7245c967adfc331. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/ATR981341237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d809cb4bef34ca5d586dc5af2af4647d403b316fc282db5f75a402718ff4a8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ATR981341238.
Mellow Dreams 4 - Chill Beats Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a519dfaa8c677a07d1bc5497909021f9ea005044ecaa0985345f6a44f970d7. 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/NL4YD2200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184603d7e450a22397ae2842c21ff2a9db84163179cf9cd06560e6eac6d321a5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA0M2493069.