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 0xdd0bd2c3d64bdb9a2542eff76cb5ca3f1cf23af3d968aaf39556fe919672c87e. 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/e0f2a8fe-6599-48a5-abcf-667ee2ff57bb.json and https://artists.proofprofile.net/proofs/artist/e0f2a8fe-6599-48a5-abcf-667ee2ff57bb.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 0x56fcbff9623a88eae5568a1ffecbd45b2e82e660943083c1701a4f60fb69d01d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/US83Z2109896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9dc2204635197cbf6d4aa9420bfdae7f11f8e62338a020be9f44f19b9803d87. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US83Z2109897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce4c32902dd4e42bf7f479842dfd1e9363bdce0e263ce3f484dacb5a27e8a8a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/US83Z2109898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d98236fe5c7aba389e704d2d7c1465c35c9676109edf27f3ef8cd127761f87. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/US83Z2109899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc82bab98570333dc5b65f4e01ccd19ccf736ef43403a001d55fae4f5494d32. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/UKACT2131916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752d174e841d5b1a439b8007320b3a0122703bec11e2ebc766a387c72826dd7f. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/UKACT2131917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a06d1ada4868b5898620c5e66b578d64f459f5f7fb3a23e769b37bbdc8c006. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/GBKQU2275463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bb0cbdb9fcb4ea40b522a2c517525014a3b67d6562571af66a0b5faa5498ff. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/US83Z2241640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9c88f53924d88a2917ec8810fd1c19eab702c04a2ae288c8145c7190546c52. 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/US83Z2304022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5876faaa8de377c608028120988c0331a1bc71a8be28b1d533315e0eb5d54dd6. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/US83Z2458746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c166a299b7bf7f238226cc083e1a734979e67da89774434d2528b8ec79b672. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/US83Z2458749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f733ddae5330b961ef6799c4cacb9636e1996d6ed211af0e12b355ee447e2f9. 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/US83Z2458752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316a7742667c6a0cb814b7ed100e9e17a2c3c6529fe03b4f1cf5d2d1e5ca6524. 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/US83Z2458748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f0b13db2b9c26bb3bae1a89be64c36ea70ef26b6dcdb24b991a3945643215b. 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/DEXN82430582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd003f3e9bad804f50df1806e381c7761d33613c988f12fe07d4b59065e522265. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/US83Z2420530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23c14fcfa82982110b9659c556a97973b028e9143ae7c020960ca932e510e89. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GXBNP2402787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4210b29fb5fb4f89006c97f0f672823c95dd7fe5dca818f3a50a56333162308. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GBKQU2503334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96aff92677e146e206f0c0bf8a3fd943c01bf04bb5c5e5cbab05aae3978da66. 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/GXBNP2501311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f72a32b76f2ce0847aac4fd035ec8bb8db19f22ebf0e7137e47b64770162ab. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GXBNP2501974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c8a94333b941c2f70b7a8e810689bd344c164576e62e0f25b17edce4e5eacd. 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/GXBNP2503787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10743fab4b8656a6881d26306657b05bb713fe3ccbb5a950ca173afbb4ded0ab. 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/NLF711600770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9368ebf2c7ad6cc05c5d86f2eb8a582405528542fbe3fd99546b41b2cdeb98d5. 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/TCACR1664881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10743fab4b8656a6881d26306657b05bb713fe3ccbb5a950ca173afbb4ded0ab. 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/NLF711600770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a12be2bad66dc4e45a8c87f043d54f5395fb5c2766bb85195a1051e0e8e7d43. 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/US83Z2458750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2358c8ff632eed9645a8717df5e008cefec15c4e313630d8f37a3573bd49b0. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/US83Z2458745.
FYH419 - Find Your Harmony Radio Episode #419
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5160afcbc64807ded3e5558dc406670b184dcab09f1b841fbb3a7b3a928e2c5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBKQU2493440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adb7d77540ff13d6d33b316fe0946b5e9845f68000cfce756c028064c5ff3bd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLF711704239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf218d981daef3f01500d2979e9c5fc90af1a3b3645da4b2b09be1a22a0f1679a. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NLF711704240.
FSOE 911 - Future Sound Of Egypt Episode 911
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7378f809e6e080bb337fadb0ad08c941b8c27d486458049d0b5f6637fdd6dc30. 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/UKRMQ2500573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a911fd3084b2da64c63dc4f3375d833cff93243efdf05c7e96535ecc197ef69. 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/NLE712400494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8b799eee0fad5bd4f0ecde33483e43c34a161e661971aeb0105213745700ab. 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/NLE712500350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e713f87eee5521df5d7e4cc6596b90d428c6b86d7614307b994048d31b55298. 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/NLE712500348.