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 0x5f12e5a9cd1a74d9c926222bb1cbe7744e58c9a0c5bc1d3d7d1bc7c82841e4fe. 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/694dbe4b-6fc3-43d6-8449-7dcd5bd8723c.json and https://artists.proofprofile.net/proofs/artist/694dbe4b-6fc3-43d6-8449-7dcd5bd8723c.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 0x87466448581b71d7b33ff738387c484b7512b5400b6904c4f3069474e1e64f34. 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/USEA20700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd52ae5998b5f24c0e5a35993dafe8b9c4668e8a90521acfa91c559a439b813c. 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/USEA20700291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf0d5dfb85da04df6f32c04ddcdca6b23ba44b6c4a9008bfa06aca72a031880. 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/USEA20700295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494447cab7c6b5edf7e1bb3a06d3e374678e936a02d68f8c50e418857838b73e. 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/USEA20700292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf132133ad1209b7a8c3488afd487ff4f8c13749efaa1be878ebfd987f80401. 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/USEA20700296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fdcf86dcd70aee9f673391ec934abb874da5a788c98fbbe0c4b85f5f91028b. 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/USEA20700297.
Materialistic B***h (feat. Soulja Boy, Lil Phat & Shell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26f89e0bdb9c23b9193a8b9233f729e0147f3acf07ebb5d5854487d4df06108. 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/USEA20700299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7714a22ba066d58355722fbb909f50f9a6afeccd32e5216fdc18c44b0e9c7ec. 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/USEA20700300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e604c090cba242ba203381cad8235553c3d978bcfa9881a966adbc5213ee3ab. 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/USEA20700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6583250ca83113a6a25afa6157a24fc3911614e890eec5615b839f64d1103f. 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/USEA20700302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fede5d5a0e15536f24b06f9486762b4480282427ddaeb10844e2e0f6edc647. 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/USEA20700304.
Leave the Tags On (feat. Big Head & Foxx)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c7b06ebe0b1fb0533041360e46da43f6288c7a53fbe5f1565746c9e5e8fb4f. 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/USEA20700305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4c6a8944804e837b5f430c262c507179de6128cabe6312995558686f0ef85b. 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/USEA20700306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6d97acc15b207a2a9e9e42e47ab26fd70dc4a8d9b07978df368eeb7cf667c4. 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/USEA20700307.
Wipe Me Down (feat. Foxx, Webbie & Boosie Badazz) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50571c113e976dc9dc344adb617ad6684419ffd7ca18eeb816464738416480fa. 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/USEA20700308.
Trill Entertainment Presents: Trill Fam - Respect Is A Must
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0944b0177bd550dad68ad8f0e5ce7a115e7d11ca1558b3f187b70c1b245e4adc. 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/USAT21601509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda173e5efeb3f4c1b1a50db4ea98a93f863b27fa7a85027efc65a32d0ce3ea56. 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/USAT21601510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fb36e7e994d3fc35f159a7627325b77b337acbc115a5b647e8a7e029112249. 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/USAT21601511.
Wanna See Her (feat. Mouse On Tha Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a600200c91efd1b9723ee9b08bba999a2999b418914625e2d700b6cedb9bc7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USAT21601512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45dcd103602aaa5295d27b1a4bc746f29860bcbf036f161746664e98c40fc32. 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/USAT21601513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf5a40c397a910473d0fbcf2a323df26be3870d649ef64dffaded63f676b232. 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/USAT21601514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05b349115d8fe8138eea0c1c28297b0b4254b448fd54a51c0fb83bce875fd85. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USAT21601515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc22949508a43e4563e9d0092081c81953207016e1bcd33107ba3e6013261aeb. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USAT21601516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2921a7b96ad5858f71f88876f8cdefe1512548bc969d4bd855bb5704658955. 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/USAT21601517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2f44b2388d4196089f82136830e23c7f1bb7fec23b6377efd1de4e0433a948. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USAT21601518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f98efa4f63a73097c2089bc3369cb380764cdb7b3fd582ca7a9148f1f073ba2. 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/USAT21601519.
Y'all Ain't Us (feat. Foxx, Shell, Lil Trill, Wankaego & Webbie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf095136868e5b93fc15baae4d851178932926f04a8c5d8f7e333e00d0b1a5b8a. 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/USAT21601520.
Wipe Me Down (feat. Foxx, Webbie & Boosie Badazz) [Remix] - Chopped & Screwed
Survival Of The Fittest (Chopped & Screwed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738ce90167d1b5c8ae796e91adab608e8733f5007b558cdcc3085a8b24adc571. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USLD91757133.
Wipe Me Down (feat. Foxx) - Chopped & Screwed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe373bb3810b5038f5bb8a3d888a7ecb5cf2581bee14178f054c6b9ff01469d61. 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/USLD91757134.
Do It Stick It (feat. 3 Deep) - Chopped & Screwed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb7e5fdf873dce53142d17d59ea372941bc2a8dc884ef378718c7f9ffc6c155. 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/USLD91757135.
Watch My Shoes (feat. 3 Deep) - Chopped & Screwed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e1a968227eeca3435af5da389abfb5eaa68457b0df98f4c86bb433cfb78588. 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/USLD91757136.
Adios (feat. Foxx & Big Head) - Chopped & Screwed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cdcbfc4cb00ede2c5f0a442fc64d8edeeba57d6c834b1f09934470d467aeef. 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/USLD91757137.
Materialistic B***h (feat. Soulja Boy, Lil Phat & Shell) - Chopped & Screwed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c303468cb9d78b10e5858696708583a12b45c3ea4d1cddc5778afb222104e84. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USLD91757138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78db5d133bae5b4dbe3b39b7bd26842224fc964ff06f0bbebe8cbbc571556a0f. 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/USLD91757139.