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 0xef8d785fe404597f652cec5f541799071a87dbda33e4585f534da30589e754b7. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82ef46f8-763b-4017-a412-6c0d4c3e4034.json and https://artists.proofprofile.net/proofs/artist/82ef46f8-763b-4017-a412-6c0d4c3e4034.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 0xad0bd3c71a8b947fc6ea9aeabf94fb379207bdddcd695cad8b5782aace6cd48d. 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/USLZJ1930537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a481d51bdb75afa6b08ea2b8c72e3ca8ac4590785ae657d3abbdbfff6e49f9. 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/USLZJ1930539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06c586589843cf9f7b433708d4dfabad4a5169ffd69f7fd92b1f475f4a22cb3. 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/USLZJ1930540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e44af8d19bb1ea68498cb201720ae521fbc140b48efb8fb8de3d221c699ce3. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USLZJ1930543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042c0d0fc438a077963a1fb5038dfce375ac2325e536a42c83b58087e89bf3a9. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USLZJ1930544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad9f30a8dfebc0961bc97db8ddeb6b96b119a197b88094ea68c31a93182b003. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USLZJ1930545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b7008952ea08be50c85d59bf3bab8be3bfa49b0c6cef9edb2d779bf7f263cd. 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/USLZJ1930551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f49af767c9dabb265fc9895ac0800c872959e99e100ba93541c69215d40671c. 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/USLZJ1930552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc954e22c637d6bd97d52e8b53eb637cb1c9342c53709124760894aeed11c1ab3. 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/USLZJ1930553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb0a6a0cef0b89ddc747c6890b5744f3ea0a350d51d4939ae0f6eb62ed09f42. 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/USLZJ1930556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1933d7625d33ddded28110a84f6fb52fad541a9e0f61d3fdf0565e4c0367b289. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USLZJ1930555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0f3a33875a3db6bc1ad1948cb2aaba56731557452ab094b4815c4b4e1a3c15. 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/USLZJ1930557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b3041b3a6daaa43f68ef937f732a64e873948513ac3155849017bf9302174a. 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/USLZJ1930559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f662dde420695aee18c1bb4b10d5ae2d83cfeed5724972cd004d99ff8ebe32. 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/USLZJ1930563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66e28ad07c1d61fa931cca9a39b5c674b4bf26f62fbb93ed6c4b85065e7b905. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USLZJ1930565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b4f979652560c5aa9710b52e9731754941186f625e65e7fed9417a265409af. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USLZJ1930567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e98a897103c35790870c871675f0c68b11af6a2de959a00b8f6c475ee6b16e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USHM81567014.
Never Goin' Bacc (feat. K-Loc & Big Dough)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4651992041049c0806ebd86ccc185a405180c000c547088832f5549670f94ed. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USHM81567020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582f423f4f6beb24e804e00db326295c7c51607db9b9a881fb8188c1177bea17. 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/USHM81567021.
Come Around (feat. Ampichino & Young Bossi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87beaca0e8d6a4ce61e95dc8fe80a1e1d7c6ac4fdc1cf3bcc9a96102882d894. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USCGH1965687.
The Bad Guys (Remix) [feat. Chey Dolla, Rondoe & Gap]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb45cd816fe8f69c9dfe2385808caffb28e1d779633d5e7db920b784a09a14c8. 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/USCGH1965688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc256cbddb8e2ab09246af1ddf49eb2b108e405f0882d577fbdaffc9ea433f52. 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/QZTB22280324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a703b652a899a96cca7998633fb1e1ba42f4e09ddb2e864bd151b4faa237a8a. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZNWS2094723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e813465247e7abdb37c89826146f057908357991785d589a2121e357ca4c31c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USUYG1245671.
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