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 0xfb3ca793532e2e8c5129daaf32e3515e906394a37280a2592aeb8f78cc05e865. 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/ecf4b97a-107b-4a42-ab72-d9b8cd0997d1.json and https://artists.proofprofile.net/proofs/artist/ecf4b97a-107b-4a42-ab72-d9b8cd0997d1.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 0x0f5c4c8f16e80c73596ea1bbdba1e369143318bb508b8d3edae632c48ed43f03. 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/QZWFS2400828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da069c5e8eb14a8a39ef7e97a3683e92ef09ce8c3b94e94df058e59f6bc7411. 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/QZWFS2400829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e291f6a67dbcbefd21c5591a61ca4e11cdbdc1d32fc9596b2fda62d294b8ea. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QZWFS2400830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947fb3af320f0c45b220fe778b3d8c3bdd879689d536515acce64583fcdf06bc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWFS2400831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190c734c23729db1ef4202cf726e2639d64acce69316aa5fadd097c8f5f1d92. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZWFS2400833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258e3c8f07e54c694c3146b28417a03b658bb4d4d54da94a717bfef6a0a8a07d. 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/QZWFU2423836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d9b7dd3fa2209a3c63743e62d9321c3426b84d0327bc4db98c893642f793e5. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZWFU2426529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb365bd8bde8fc60d3e76b7ceae03a280f6304c2b476c83f740799275240fffc1. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZWFU2478160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7360528adf0eb6849ca6cbffafc50e9541085da507e625e758f635ea93d8a1. 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/QZWFU2478161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba504b39ad7039e880033d3d7bf6410e047066ca617aec74c560f57ad9da7aac. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFU2478162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21215d8e52b07c2db4ea43066b989d308358cc634dac73a5d14a2e618b96d793. 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/QZWFU2478165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f575730ee6ba27ecf8475179547e293ed10b971e1a453928806dcf01243259. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZWFU2478166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4381aca1eb0967b2812a591e0dea43a2be4c052b8b14796aa6317fc8dd15f6c. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZHN82521384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea61ae3f2ca9c7281996053349876b2437c9bf8359022999b93d02e07bbf8a4c. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZHN82521385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc32b4848e49e7cef31156f78095b5d1a528e1043f8ef1f22fbe626abc01b4c6. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZHN82521386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943e01edaebdcfa42470bd8826fe1a01961ce35c249c99cda4650f23ac8ef3a1. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZZ772509541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c431e8b06dc7309103055053107de05c95647d64cfbde9fb523d4fc74daa91. 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/QZZ772562774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e62cbf05efb8dfd9ce379bac4db59873d779aa075ed9cb04c49ce5ab778ea7. 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/TCACW1762285.
Friday Night (feat. Panthurr & Jeff Kaale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4a22ade71a924881b4e44396011d938f1450e236edd4fdd301b0e78cd569e3. 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/TCACR1600311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab83b19e6775d94057ce31eccc899c4247b0e7de391a3e2b78899f6333be816. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCACT1655087.