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 0x3ae8ec3b8390d2401ec906db1afc2aad5dd2b488a09e146f3c1a7dc3be03db8d. 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/2467ff6d-061d-4c6c-874e-65dc229926a8.json and https://artists.proofprofile.net/proofs/artist/2467ff6d-061d-4c6c-874e-65dc229926a8.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 0x042bcee9fb53ba19592ed3a718f8197b6c61a0ce7a8abc9598ed02ca41c8ea51. 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/DEU671601345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dcb725d9c708f1f167667d5ae53d5cc09b80d095f7ab7f73f46765f9fc6751. 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/DEU671601347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53998291c1addde4794636028cce8fb3c5d27bd4cd9da6362657fc78346bd8c3. 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/DEU671601348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972bbf4bbdae07278cce4e46d13971d598bb9d4cb96eb1edf2b12d997222ec09. 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/DEU672100867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475af93bdb941ffb3b9021b4ac0cc429be15a97a6d143058952cf038d49b3ed9. 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/GBKQU2067333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcedc744ea7d7adc8155bc85f3c813798021d4ed72784329974e42021f6ff1d. 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/DEU671902428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a5743db4c78ca296828f8f593f00513bd18e43b7ddfac80e19ea187e945b1f. 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/DEU671902433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf4df921a898a3422b6f882da2a9144e7abee9822e228ca4dd2d06fcef8fdb5. 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/US83Z1911930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd85bb6b844443a60ee493d30227a8842e71c41001610c5451c3d3f9cab430e. 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/US83Z1911928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c10df26634586673d8af7ac6e764c8200dffcb367fdd2462fb36d97f62e80e. 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/US83Z1808303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e56a190079201974b804b1471673774f0e2e45eb0e8c181faec3841138c39c7. 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/US83Z1800411.
Don't Fight the Snake - Breger & Timboletti Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c12668a27d7fbdfc3bfe76a3d105252c0fac009ee1de03a380c83393e476f1. 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/US83Z1783898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591688fd4cd401b9a0054e9ee024ac7c4fdeec3761b6b167f0d49111a0ae8a25. 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/US83Z1781539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd55c0a3ce25cf48ee2c5cb23bfeca3b4e57efaff03584255bd0fe2e7b329d70. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US83Z1781540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdea97b429ca4030f1f448339d41630304823dd42f507a1077608284d9c91425. 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/DEPQ61700567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01a34beb84382dfca2b6831d0047dfc2d0f5763b28cb3e72ed9c5f733224453. 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/DEPQ61700569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aaff2ea4b200e76bbe45cea33b2d11bf38b5026a75294c7ddff3389cfaa703e. 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/US83Z1663008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957d25f74ec3f43b06cc470d281a4b3fd42ac2d54cb9a801be0fe8040400b9a0. 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/US83Z1657564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4656f0403d0734878ec8532dd38931d2386a9db976e7140e70fadc618f4e6789. 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/DECH61400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7d7e7580600355e9625e710fc82a09e43f98a89a18f8211fa723432a3af3c8. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:49:21Z), 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/DECH61400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cadfa6b343a3766ffd3ccbeb3a8f144788e62a035fb06c1ce70dbb4ca8e1fac. 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/DECH61400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a28422660d4b031418a14a9490e9e21eee6b39e649179468ecc475162b96bf. 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/DECH61400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365bf8e5934a5f730310615f14dca623585bd1f39b00c607f7c542300ed10b0c. 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/US83Z2007400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ee6abb1b8cf67e56e72fc6fe8e3495342a7a504b8dc24cce5addb9e03e1151. 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/PLU211800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0626ad2d568d780c805bc5f71cf4adbb686dc945a4e76d8f74ed368938741386. 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/DEU671702642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fb17e6f59677ed31912389249c703149f6c14d1e5bc018f44bf61f7aa6fc96. 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/DEU671900914.