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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcac6df43c8b3b7d6d60ad41e111e4a4844ff145b70688e48990ce4a027c1a1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea780c0a-e31b-4909-b5e4-469f557bf1eb.json and https://artists.proofprofile.net/proofs/artist/ea780c0a-e31b-4909-b5e4-469f557bf1eb.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981cc04e55060b70ea68905ac1a4b743943a14da0e3d4faf810e8b2405049e6d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLG661801102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3499517c3553e99395405e1119a2810467d2fa0b343ac04cf966266afa061b09. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/NLG661900414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc76f1453c3fc8875736ef7524295480ddf849e50763985b474c41ccafbb0cf. 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/NLG661900836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedaeea65243d06628a7b154e739e2888f560ab8a8a91be47938f131c7dfd18a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/NLG661900964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92ea91951c8b68c8b503e7e889a3f2e12a2eefe5c9813c6f6b83b1fec64e5b8. 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/NLG661900965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8b4df2fdafa61e5b5e27c5cd549e94eaf8ecc75dd844008825ea1c50325fae. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NLG661900966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15927ef2d75de1c1da2d5582df4e839ddb16ba1575cda679282e9b5b4cc44a4b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLG661900968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac2ea8baf5fb2d59134174013147ae28ed8883288e83c8681162e64651402d6. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:00:26Z), 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/NLG662000385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a07221a02c7e232bc4f75f40436fc0c1e857bcd73d04990b410b16e4a58a431. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:12:11Z), 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/NLG662100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6147f26863ac8fb0e3432764bb868b6708e59963e4178a22c21c34d0ace5f828. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLG662100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fbdf5c6a2da16445f63586444cefd0e64e45fadb0e2b09ee6095673607a222. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLG662100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec3f2236039d4a558cf71a35d5ec1a18bc8d7260e9b6b9aa15ef3e80efcd9ed. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:35Z), 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/NLB8R2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92964985e13679e68eb7803cbd16c6dea0107a776fa7fa5754ac1dd2d2db5906. 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/NLG662300803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fe5d706871611c6f8d8153e54cd8a1004cb85a5575ed5e0beccb6af40ad093. 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/NLG662300659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f610293a9e48511ceb1e6732b2c4e45c9f30e63873213fafb18c5880d2d3102. 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/NL5HJ2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0539f6a3833c01651a46303f35579cbe6eb2170f8c9a81e9f1b28c3f9d66b1f2. 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/NL3GQ2100562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6546054b5ce70936be494b8bdfd54cb798ba8ec291a8094fbc22dd6b290dc8c3. 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/NL5HJ2300334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58435b79978025ba91bf1ab367e3227cada67c48471e272c41f0f132fc2aeade. 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/QZFYX2181804.
Richard Mille (feat. Jordymone9 & Bokke8)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d2995fa8a2b31c76f2138fc0033231359f90338f948120277e8fb24478a0a3. 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/QZHN72137115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118f3e43c0f4435d006f789988455d6a37109c1b52d36e5a3042353e7eac0085. 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/NLCK42233014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1e03e7dc3b6b4bfb1f58464cca74ed1d77ee86ba2817186b65f6297ce63455. 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/NL3BN2100034.
Oldschool - Mixed by Deejay Abstract / Hosted by 4Shobangers
Top Notch Extravaganza: Summer '19 (Mixed by Deejay Abstract / Hosted by 4Shobangers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf775cf00a278393bfd367feb86a2f1abb833f703cc7cd10ffe2d9f0193c8034. 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/NLG661900659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863ecd9c1ce734a696a8b305966b614bd860163c58bb82b711226b41c708809e. 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/NL3BN2000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378a979f98be5d5ea3e38d648371cd8690fd4fedd6417daeef2e75a5241c7f68. 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/NLCK42416687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d6f7a4e803e8b4e6bfcc05f18f4a9304a5ac3640bba50285f1a8ef7408bcae. 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/NL5HJ2400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0206b3bf661afe56677c9a73d82301c62bdce1b23f4096ed59cdc1f3692da8d. 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/NL5HJ2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d6f7a4e803e8b4e6bfcc05f18f4a9304a5ac3640bba50285f1a8ef7408bcae. 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/NL5HJ2400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0206b3bf661afe56677c9a73d82301c62bdce1b23f4096ed59cdc1f3692da8d. 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/NL5HJ2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fe5d706871611c6f8d8153e54cd8a1004cb85a5575ed5e0beccb6af40ad093. 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/NLG662300659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3d0184f59a3d3d4fd1bc890456efc47f82e60fe8070a3231b9bbc13af47411. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLG662000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b233f9b1e3fed6fc596df19f173c9e2b2ecd419bbcdadb95895cae441d53bd. 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/NLG662200292.
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