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 0xd089c50fbc32e0e915245b54bd407998946b06f3a14116613227f220bd6fd238. 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/0581e08c-35c7-477c-a9ec-0cb6fe2e19f7.json and https://artists.proofprofile.net/proofs/artist/0581e08c-35c7-477c-a9ec-0cb6fe2e19f7.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 0x2a2c023a7c90a3bf6f5d656a75be7d686bb6a762173bbc3e94afbc4044551a2f. 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/QZMHP2463501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5a66683d73e764c3a40bc2e437cb73573b0e3b31534e528e53dd66214451e8. 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/FR2X42316879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3b4572f6137710b3bbe31738e6d6dc5263169058b545863e6a21b64da61657. 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/FR2X42316881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8326916b581ed193108576a0398899391daab3a5868c73e99735fce0ae5d29e9. 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/FR2X42316883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eacb5d136cf13ac85a754f8d1b5fe922c2ebc854b1bd530a32ced0d7ebc5334. 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/FR2X42316884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7eb70daab7979eb890f69b8376ad8b3d6d03ccfc89a59be07de6180b23b500. 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/FR2X42316885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd549a249b120c5e6e8eb479179d8963ecd099fedab2f8cafe7288784b442a612. 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/GX8LE2309518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7c5df1d002bcef54131f92e77cf46d0e8bcc558e3e52ca5bfc5b23a96135ed. 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/GX8KD2247693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5986b7d32c68ae701d8f8b841627f6cf59f59821b4e71803fa42d22975445676. 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/FRX762367367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b14c49b26142a3e38ca219b8047beb1cef5e7510a08a52a3ea2faea8c124293. 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/FRX762367368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca303e64abf0467e3d44c3ab929e4eeb038d56f7f3decfe1e1505774c1bfbee1. 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/FRX282395183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5735f73625112272ad39ef5a9db0e80c37d1dda736aa058e19e6fa82d959fe. 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/FRX282395184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf316285ecb82f11e1bb7bb9ff0e4b1afa663895aacbbe45905725e0e5c8e9d. 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/FRX282395185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d200b02d043d22a3ed1e9f08b792faf74f03b7faa96745db69b3c04575d48a. 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/FRX282395186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824c4c0dde80eb12fcd9bf45725a077cebd704f60b9cd9d0d2ea628e8b5f4fc4. 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/FRX282395187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2621c783db816f3976dc9309ea9421a0c729cbbd05b3bbb5522b4ac84fae495. 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/FRX282395188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4718664b82803c026b1cb3fa8d63e7e9336a2845392ec15467504809d409ee. 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/FRX282395189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6825efbf251f7f39f5d71e22959c835f9ffe1a5f46d9e2baca14f369910e9d3. 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/FR96X2220327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c46ee13f3089f52a21b15aaa1a7c9e51bb20f4c2316fa2837610cb7a507eef. 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/FR59R2216167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2b066436778e81f102ee8b73f41ddc98f8a03135e3168b8c9ed79f766887bd. 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/FR59R2216168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7648168700a084bc4d26626850483d7fea6e8758f4fc4020297e42ed1d52c50. 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/FR59R2216169.
Now U Gone But I'm Still Loving U And I Hope U Hear This Shit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85a973c41ad3ea2288d8f408627fb76e20da00b1bd3142cdf321bcba6ae5b72. 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/FR59R2216170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df0e8443b46624c6156f6c60b2c02d242029ac6df67e1ec97d9be9039312c27. 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/FR59R2216171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c116a2896610d90cf3f16afb542da9c281d3a9db40dda2824b170b0049aa335. 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/FR2X42270294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0284d4b1a096bc22625bf5465812063601a134914859bc6ea72abd0fb9b09844. 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/QZTBF2340549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5547766feaa0f6f1f6f963ca68c1ac7723b86f247ae0338d591cb15c2379bb. 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/QZNWR2378243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e52073fc86499235bb3fa94c12a826afc86b606c2b9c07247d0aa76d158fe4b. 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/QZK6G2357542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c23a29958d5c8e731159380f19ef293046b46fd6dce1009e7fe7db29482088. 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/QZHNB2350560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d1725393ce8ba731714d12cb5c9757aedd3c8dccea0b52ff266e1345d3cc60. 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/DGA0R2316564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401d194125364729a17a38f1543fa9bf6d425d16ceb3a72c395bdb56170bfceb. 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/DGA062340694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2361fe979d6af71396c326e15c1520229c0aa2a46c2a4fd64f30b21a65b145. 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/FRX452307653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbf93598a4338c8a68192631ffea5476406a3934f30874b4709cf2fb7e63f06. 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/IDUM72300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66f8fc60aef1957bae2fa5affbde00439793d82818abc37620cdb7f2fad5b0e. 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/IDUM72200298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0765bbd76ac8afe0798ba9e9fe8597ec2ece5464b74ed2c7dd0cbd55b40d88. 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/IDUM72200243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b3a7f8400c010086a920f8d81ed22ef91f96d27637eba09fe70a710e84e9af. 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/DGA082314314.