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 0xc185e526fbd1d516fbe1afb9d733713bfedf8002c40aba22bd20358fa273cafd. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa03dc61-0e4d-4018-93b8-0ebb245f6b66.json and https://artists.proofprofile.net/proofs/artist/aa03dc61-0e4d-4018-93b8-0ebb245f6b66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
FreedomsJazz Festival 2016 - Day 17 - Rega Dauna (Live)
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 0x06dfae655906d000bf5aa8d9d0b666cd9c4fad09a3737609c97f49273fe11c36. 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/IDA142308561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a74ad6ddd7078e65e3285f5b656de4b1b51b4681df8465113db2c137a0b6b7. 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/IDA142308562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3ae3a5cb7e4d788b4d06bb82a21b6e5c295693775ed9ea71d3b7d52f78e8dc. 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/IDA142308563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677096a98a4eee3ce433f81ebd6e894ca60c57f83ef95912f5283a6f11a17f8c. 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/IDA142308564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72768292b5af24194f624239d30e8f6b1b4a64320929909ecbd5ed6a49803e00. 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/IDA142308565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca6ec4b2bb1830894dfdd7498f35adf4a1b035ace30089141714a655109d2d4. 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/IDA142308566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e011ed580ffb59e522126ea5a220539cff55fc8075e5676430c21a779ce4115. 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/IDA142308567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d696d6606a9b9156ab176307ffe530073d87365c73a6f2a2b9f0ba5b6d0823. 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/IDA142308568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d0a46f8184910574e7d7768e6f6c01cf1e121e4b8372f2628be177652142be. 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/IDA142308569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b5745a610f4343616c6306ca1081f8c3e87234ec6cc6e8a4ecddc96895860e. 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/IDA142308570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7540af506fcc1b19a3cbdb94c82ccc4c1d089c6ebe42733f4183740608737d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IDA141602410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930ebfc7f90c8215e65fcd05706e3a3293ab88cd97847a4bdf6e60fed27b9620. 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/IDA141602411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa62e2ff3f0278b99fd9dbc0f93a0b6bbc05c446c009e79ee78fca724fb9998. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/IDA141602412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c4ef098089ae6222938d0170f8aee85bc0e02edcf27c25def0db9a263bd3b8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IDA141602413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96362a90fd11e1e5d8d225e5c8a65f1e5430c0f9711fa1a049cb92d09d2c9a82. 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/IDA141602416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f30277a262fc27e368ec7c2eeee8243ee83855b4ea2d80f19d7de81c19082b. 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/IDA141602418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a922ba8b304c2a72f3d5cf1e55705387703fb7e3f8e98e182286c0c0b4e56ad. 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/IDA141602420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bb40756b042c704ab6b2307514bf6eab06a81143eb0f72671b1d5677f8ce12. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/IDA141602417.
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
Irsa Destiwi Quartet Live at freedomsJazz Fest
Tomorrow (A Better You, Better Me) [feat. Rega Dauna & Bass G]