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 0x0b21ec7c7ad483cd4a140a9063048dbe1ffa017073296c9ef89bb0a5b3e778d3. 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/3dd54333-33e3-4ef6-8941-e060f252aa93.json and https://artists.proofprofile.net/proofs/artist/3dd54333-33e3-4ef6-8941-e060f252aa93.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 0xf833e9b8e508357adc28913057c98d6c8ea803140974bf31a1445f7eac0a1c6b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPV2350617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dec8499e7d7d0a850d13da37f74580473bfb38a0a07ec060b4988a24c15a72c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TCJPV2350680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21efe1d67c33d6594b2b983a115e5d2b7ef3939c97f4815d85de43c0f2983867. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/TCJPV2350676.
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 0x48197a57725af8e056f8e3a2a657eaee7918ea117d22c2c57434459fbee95b04. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPU2347365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a12c21c979436b87d388f9e828f817f82c63e73b92a4125d34af1668c81b32. 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/TCJPT2275567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed933ac20eac73b6ece6b791651ccab0b412539e95b6410ca5fec2c8ceeb6eb5. 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/TCJPU2347318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf2776d95663832bc44616cd5ef3097f11a414143327f97e24ae4949832f76a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCJPX2310453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc6f0b5aff91d6a30cafbc9ca74e21144da183664dcde481eecaf404b80343e. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/TCJPX2310467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df4d1e9c38179beccc4109805c3139651918d1fef4f16b4be2309343ae250ba. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCJPX2310450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bdd01c9a646f07bd10e3475736066547b715adfb8bf8fc62524d49aaebe323. 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/TCJPS2286326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6814ef0d14c5689cc70e27a747abbcaf24dd4a5b5e6fee521fdab1c255a2dcf9. 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/TCJPS2286328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a8ce5c998d93eda6b8bfbee12b70e36cc617219ef52185f0b5bbcd1a0a4531. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPS2286334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d9c7c505640e24f71d25ba746eba8e14080baf3aceaccde2eafca20e819561. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/TCJPS2286331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b0381502fcce9f2a9a59a084828e48edb1be98ebcbe06588e21146ac8d97e3. 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/JPP302400391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5d8d8106a8bb013a0debf14f6d486c475040d1c8a82af7e92f86144c4dc8f8. 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/TCJPZ2429785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a12bb19ccfcd755aa11a08d6cae45aeb8f556d5a7ed3afb2bd8bf34eaf8dc9. 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/TCJPX2398665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392d921d97fc44d7321961aa97669b3abe09edd6e33634d106d59d0b2d1a1f73. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/TCJPZ2446632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10bfbcea52ec7bea07c9e8c12c3dcb63316f286d3cc55c479c48178b97dde1d. 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/TCJPY2476832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe257ab27c19011fcf13cc9b256eda899280e75e5464fbcd57c20aa12445031. 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/TCJPZ2446931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cbcc146fc98756dfe516d246ac1f3ff8c447242bcad7feb4a52c5047f3eae4. 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/TCJPY2339406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb72a08a41732a88bfbe979e7a74abe4013200a8d2f3bec5baf8fec0eca6797. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCJPZ2446941.
nostalgia (feat. safmusic, lilbesh ramko, asstoro & lazydoll)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe408e43fee599d8d99dc6210ce7c6b1ff4cd9a4baff01ed598f290f76006e73c. 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/TCJPZ2446946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba71cdbdeacf33abfb634b501000c858d8abb110d05196900232744bb5368760. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCJPZ2446947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e5ceb84ef43dd4d55a80cfe802f6e3a15792d32ea12852370dbd374eab0847. 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/TCJPB2451020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcab1b3a148476f4d4342beb198a5a61789f0659eff16b9ef11901aad4bbdf25. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPA2421656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832a2fa4eebf51d8425a9ace979f2db0c85d9522d57b528a8921f440545ed6fc. 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/JPG102400097.