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 0x830c52917e81990bde069f5dda210bebbfd19ff6c08141210867fad117b2df1f. 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/8d95bbfe-3192-4c68-a67b-7552c7ba8530.json and https://artists.proofprofile.net/proofs/artist/8d95bbfe-3192-4c68-a67b-7552c7ba8530.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 0x5f6d07ba67d2f6c589b52895699edee206edf5cd676569d95f67b92bd3b9613c. 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/JPU902100751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b730173808b1783956626662a9188cd5f0863a77c7ace1b798f7c4a0ee83f3. 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/JPU902100752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff7b844dc4dea35fb1bd2ec7b7ca90280a694c65cc7bc443eed7f157b3b2237. 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/JPU902100753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286600110a370543bbf3cc70bf0b7d956bd68669e8c80e0b5d2c218f39fc264e. 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/JPU902100754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c0081412c5b1b870732553776e83d5e3d1c63ab20761485e55a8e6c790a141. 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/JPU902100755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5ce80cc04971c2b8d05438d232572ace1c694d5eecc33e107499e0a59f048c. 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/JPU902100756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b14ac05285601aa60255260fb55ad529f0fa53ef8fd3a2f8163c4027b074a4d. 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/JPU902100757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb911eb9d56d80109b2fecf34372d528b23386c9b6ba3c593fe18cfaf97f6cc34. 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/JPU902100758.
hennessy state of mind. (feat. familypet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa07a047b37f74ee8839efd35214c9561602e7e37e4fe96acbe702a81cc54e3. 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/JPU902100759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a0c23d9f88e4d970cb2bdb22be5ea3782542442e990b2ee6a4d8f10c21ac1c. 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/JPU902100760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a2434eb547c6bd9f4e5eedfcf6c68f5598d9785beec441fcc37d3f5e541ef1. 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/JPU902100761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30023cee75c0dc218b74aa293b850c46490537feece8883485289aac97d1b06. 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/JPU902100762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcfecfe410810ff69c3c4fbc5c298b66854125a9d3b1f763c45ed14cac5d93b. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:55:25Z), 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/TCJPT2258490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81074b2dc0fc3fee31ab9233408583f4a3450ab8422b4a26f825bea27716c048. 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/JPP302102002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71f5180258656e92551fa6f10966570e4f4e2633f29680c102de1a3327c859b. 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/JPP302102003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c767c92ba105739587aba719b4e8025e8838e3d5f79e6f81a5abb0697fbc3dc. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:41:14Z), 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/JPP302102004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a49bc189542d5c681cc735c77164f4a08cd4b473d49fab73d769083612aebbc. 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/TCJPJ1978517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed43f1fda1a22066f27a83fac02e4830b07b1dddca073773cc4557d68c5bfef. 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/TCJPJ1978525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50899c2dfb91d5eb8f7fc9d2e9534c388b43b8f6c8cbae19dbb5305b6ed1a4e. 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/TCJPS2216877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cc9c15d1cbbcd445be693afce46ca6ca37466bbe4858182f3427d17e27d86a. 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/TCJPS2216882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2ea1efbe122f46ef55a7ad45b83d0f79e0bf7d3173c1b9da958a4c4c7c7875. 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/TCJPS2216926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2abd6c4ac0c6bab111171db482247126915812aa4a9c5beed7cd0e77fdc29f. 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/TCJPS2217059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d93b446c38d1d12b2c06092f6c817f802b4e2c60ecf91c89d300134d639d56a. 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/TCJPS2217206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9c6b64c3ee447385cb5de27524678b80bf977a9e2ffcef541a8d6b14938434. 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/TCJPT2291182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953f1ced6369a92bd0cfc8401f9c6e1ae8109c0d348c2b96c3ac4b9e6be65345. 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/TCJPN2037060.