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 0xa24e2a01d31172a812108edcb8f28f1c464a7cd2abdef8db77991ddbfbfcb21f. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ceb86d14-b88f-4909-a5d2-20d15f5f1623.json and https://artists.proofprofile.net/proofs/artist/ceb86d14-b88f-4909-a5d2-20d15f5f1623.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 0x7dd23dd3cd9ffdd96bdf65bc6b7c729b1828ab4a3f3e5aa0432f82d570f65951. 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/NOCJB2200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40512f6ce0851be4958d739237ecd65ee213149e03f366f1e509bd6840f5f495. 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/NOMPP0506040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632d00d58fbc0754e72975abc452b50e1680a773a1f4d67c4490005fc5edad79. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NOMPP0506060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705718f1a73fd7d82dbe5da37c2214595b079326960ee289ca0168e1388453fd. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NO30H1507025.
Sabor Caribeño - New Music for Concert Band (Demo Tracks 2022-2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d996868ca625fde4cb838624cbbaab1a1d7fbeb9082540754f5f843f773d640. 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/NODGN2207010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd562905dca00ea1f2d086d557af0dadd8b1f101d49eec62256340190bdc73c09. 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/NODGN2207150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d39fbab03d1551775acf55220a859f90406412492942250612197b6ab3d17a. 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/NODGN2207300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60344d93770259f4f452e55e540837b6854dd7337a5a98051690be3171d89133. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/NODGN2207160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa737c36115610f2c4e6c1eb71bf8b97e3e38ce8fe2923762c47a51483e0e9db6. 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/NODGN2207170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7488d2c0194e5374ff91ecb03db22a85436922141d16cd574aa6878db28be3. 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/NODGN2207080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fca04acbe3747f3a95accebf9c244bee87ffb8d5c38e6983fd5f73fe94a0db2. 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/NODGN2207090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d2fd9fca4629b3489b42be4eb20cbfc66f6b2f76d0e24e96344d7bc8a97328. 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/NODGN2207270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb0b98302aaac9c1d2032ffc885512e696a2e7cfd328316a5d4b512afcc8a9d. 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/NODGN2207140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf29f0fa42f39b48aa275cda31cec748ef6de5496708d53117dda1660ebc7e34. 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/NOCJB1900411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b5648e99b2afe3135a44509c67398205fb70ae6bb4dc65ae23ef43f01a7df3. 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/NOCJB1900413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea48af914ef60752ba3ce8c7fe39e39995cea52810bf816d92270a44dd4e4ac. 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/NOCJB1901015.
Nm Janitsjar 2022 - Elitedivisjon (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8283049c3c92b4461406181ec76b647eedc945930b59d286f501c3472818fb2c. 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/NOCJB2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ccbffb1ef1d0fe916dea40d801909f12f1d0d780fd92d423124828d2860a61. 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/NOCJB1800702.
Variazioni Sinfoniche su "Non Poto Resposare"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4215045c0bc2612a7f499bb43f5f6af6fd8f0f45e267a1dc2dc2f2f17545c87a. 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/NOCJB1800703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce648a219f514331f9c639f077bcf85952745e1c01a66b1a89fc1bffb5ecd3c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/NOCJB1800709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cde773e1ebdecdec92de100a05668aee61bb6ba14770775a374b72c8b7981c0. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NOCJB1800713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c07386b193426d2a04b62dd02b86e5bef4a7cf1c48728af48928da788cebc9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NOFMK2401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1649518ca967f5a636b861541b29ef8236dda61501e4bde6c12737d098e55d. 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/NOHMA1254010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189fb637ce5235484177e974e05ee06677c2a892256a6a90ad964b082b01ea90. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/NOHMA1254020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9e2c38cf229c2d7d22820754bf475241262020b0524f54dc7dbf51ddbbd494. 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/NOHMA1254030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f56d43bd6d3e9f181c4a6c4ece25154004d417f14a545fe93c23aa80a0a58de. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NOHMA1254040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe373a3afb6682bc95bfe3a2dfba600c93e72cdc6c4a7e012c254c4efcdabf4df. 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/NOHMA1254050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e661da76e03d1f83d67e8846510bb6d8888e687f5700611cbea6639e86d51b. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/NOHMA1254060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64aed192967dfa401577a5a256f402dfb079bdc42d15c911a5bda97fd8394ad9. 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/NOHMA1254070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafdfbbb3c2779cc3d58fa5a474ee2701349ce0cf1e985e1887e56f4f3db4402. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NOHMA1254080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8b9f1bd776469886ae0ac4ffb2e18405d6548701db3ef986a2881063c61343. 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/NOHMA1254090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97270e37317965f85f438f9c420d8705f722ba3dd5e1d271d38324e1cb2c858. 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/NOHMA1254100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5557ebe6a1d04838380d6fe63bba38a9c179e15a2463e80b5b8e73966c7e59f2. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/NOHMA1254110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e709a63efd3746d3e4fb93ae53c9a1522e8dab65c96885157ce731d4f7bc9e9. 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/NOHMA1254120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06be828aeefaeedbc8319ea9319186b568cbd2ab3387ad6b2b6b2e7299fa3fec. 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/NOHMA1254130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ba27ef377e6f7763fea0f619d2d365d3f32dda386ceb5bcbbbefde3e549430. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/NOHMA1254140.