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 0xc317383d36a54730e6dc59c045e2ba0c56feec9bb6a8a5025c8c5ec5e0821195. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cec78f44-4f5b-4a6e-b498-5bf82732af1f.json and https://artists.proofprofile.net/proofs/artist/cec78f44-4f5b-4a6e-b498-5bf82732af1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ultimate Bossa Nova Jazz Instrumentals Collection
Relaxing Bossa Nova Piano Background Music
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 0xbc65af0a05a788e80fc9e9bd03bfb5aa968f5e340a653f16bd22e8d976fa35e0. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/BGA472401962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673c93a3bd27aebaa3a1588a444b8921e57c235e2008ef0f6bf4eb22d520969a. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/BGA472401967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cfa465141d828536b3aa622a78765c93495bc8db12066013a6399344cfa88e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BGA472401968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5007a1e2f600928977987df0e0a07c0ef831b98f6db3b5a4c4c1e23d87dd4311. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BGA472401971.
Happy & Upbeat Bossa Nova & Latin Jazz Tunes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384a9523353292bf9b883abf361ac40fb48fc4b9fd701c003adf6a94dc5e2970. 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/BGA472402431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556f68c3b07c2ee752164ddfe04c5462789e1865143a7cd820efe46f37cf592d. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-21T21:37:13Z), 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/BGA472402435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e5ce4234d67a1b7790d400cc868a351247f179eb9104283fad70a9dc8c4fe3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BGA472402437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741420e4a413285dfc4d1fd73e4e52d9cb57de20f0a4e1526289d191ecddf10e. 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/BGA472402440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8a3eb2e85b474f56b638ad193a032eb642f54ebc01bc820bcafea3f0018d09. 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/BGA472402441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d819acff613bbb7b8907fea24aeb38113338793359acdd6a5ded49c585fa2d0. 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/BGA472402442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9db240c833748fc78bc13d40bb191b1a06b5257ea4cf116daeb7f5467babfb. 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/BGA472402443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55580ce47953609e1d0bf0bd0d268dfa8ef7e216e9a3a2ad8e99b3eb6820598c. 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/BGA472402445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90a2a2066cd5b4bd61c89e85ec1a7988c775028bffeaee5823466ec2bab7c73. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/BGA472402432.
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 0xdecd48df02030897dae885e768e49d0da36e07f4ffe7d9c755a677fc4d2b126c. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BGA472402433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a27130538b481d736f94644444a993ea603b9ccd6cc1e74eb67895bf45f1a60. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/BGA472402434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cc358187ff9fe7654b8516a210f05eb51725f2a1f25b4d0b7dedda51237c1c. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/BGA472402436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4086c202767708373b26f6e1a8aeeb7118846b673ccc74412c911bb4fb1796d8. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BGA472402438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72811ecbf7e62a96541f9b1457eb0ce7ba79fc1bd2992171fff9dc99afa25727. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BGA472402439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee4046fac415fc3bcf99066464d4d8467a1ae5c19f03571b9b4db5304a0f474. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BGA472402444.