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 0x2304958be9a4b7753d6df423bb31888b2e20c963e63422ad7a4cb8ccacec7136. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6514dce-3f28-43fa-a0c6-e2a86c86bd01.json and https://artists.proofprofile.net/proofs/artist/a6514dce-3f28-43fa-a0c6-e2a86c86bd01.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 0x2e4be17b6ba26976dfb71d72ac65567f4d9a773f428c4a8f069bc1f3d053e02e. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/ITBVO2401016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68162918a4fee9be609ad128959611f36685ff8de93101803a689628bb5e7c73. 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/FR96X2472714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bac62db71365c9a7ef0c85b6c2496305c4050d628a99ec456d928b514e884db. 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/QMDA72335877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0110ee4a2ed74b4200507b9a57dd36a70cc6604da5681fa3c06682a844306e. 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/FRX202355557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcab55fd0e97295cf1f068e8580c7b8c1d2e06c363c3e56a07735a08e0c90921. 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/US83Z2135915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbf182b31617fef66b0a03580d0e6ee7118f4e0522e052f782141ff9f0a67ba. 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/US83Z2135916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673af0fd0ffcf3a3a187ea2443bc505ad7636fba1421a060fd926a84e9df88a3. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US83Z2135917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf692dd6f448e2ed36d15dffbf0e1b980ae1cfe5d1b9afd7306ac4b3343f15ae2. 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/US83Z2135922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52efde4b42f020c6aea171ee9fb6aa5ca501d386d05a759a6f020df1ffd37ef. 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/US83Z2146401.
The Valley of Samsara (Den Macklin Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5e4ffa58873d14805e0d90c21fd8be2f717c2ea70c69df22196c40f851a217. 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/US83Z2498893.
The Valley of Samsara - Den Macklin Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245f99851ffd53749c2f2c7f0a691a3ffbf25b310de1886197a2076d1e2cf570. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/US83Z2498894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768ac52996e86beafe8c5fd2ff9c94b87cdb8f697869ac2bdaecaf64fbababbc. 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/US83Z2493517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4624e7e6863ecb2bf6ba13f717d00bb6555fc81b778694472b2b1bda49735144. 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/US83Z2493520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace0893d12adb2b3f99b2b79952de2fe7baa9b2c7b0549c7f5736c3fb3a12280. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/US83Z2493522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8e21c4ab9406eda8b070a83d180248b7a1ea9a255eefc278a10fce337499d1. 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/US83Z2493524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4acc91a7fa16cc9dabec30ef5f8dbd475f1c4b96aab7044ca892ca5f0dd5088. 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/US83Z2493526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bcdec60e30ff989d58a8ad6ee0d46868b0bce6f0584af306d45594e272b9d3. 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/US83Z2493528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4416d59497ae591e7f7cf469cd26d7e9b2c666e216ea9f299c69d5bbe4f669. 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/US83Z2493530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae52bf5a2252064220a4011d0dd7f85a44c82e01024fc60b251f5863bff631c. 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/US83Z2493535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b448ae5792dc662a4141b8e2bb52d2482d51fd315e49dd48eb8d788a102d77. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US83Z2493531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe7646cd74c05fb275529bb6b77275a10226ee8ae702624bd2de7ad4887f2d7. 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/US83Z2493533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c86e32d4ff32f14f84a591d1bbea4467ecfed7aaa1d922838758f98479f759. 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/US83Z2493537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bec636fc955e9fcad4f6086a7360701943a26da3acc6005787ed89f67209544. 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/US83Z2493542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9eede9e08066bc86f7954c5a46e3e7465d346ca5ad02443f9c7e9143b54367. 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/US83Z2493541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39acf2b924a03d7297ab923c8f9268f801d0a9d447351842c76d47d6868f5a01. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US83Z2493544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1377c6814c82438093035ab6e868a04b724dae0c8c973d55fc2bbebcfb26b6f7. 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/US83Z2493546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60673839a234bf2efc0c813dc9c1b1031b1cc0a40d5458a182a7c19b7f3cc427. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEVU52383191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a48645a8dfcd8b696be140615a757dcbff92274e768d5328d139072dafddde. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/CARE92101385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d45b39d4f1a2d1582dae15c09daa4e4f4ab63f2621e486bd91bd322c29b7db. 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/US83Z2045981.
Seasons - Winter Mixed by Mass Digital, Vol. 1 (DJ Mix)