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 0x874ede9a6257b0a06a314fcb7849863f82c8812843c4f061d5cdf64fa7e1bce9. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b09cfba-6494-475f-adda-98a5a35d25de.json and https://artists.proofprofile.net/proofs/artist/0b09cfba-6494-475f-adda-98a5a35d25de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trondheim Jazz Orchestra with Sofia Jernberg & Olav Luksengård Mjelva
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 0xa983834e41af44a7b9d01449d6e7a597fb47bdd1f35f64bfc7241784aa7659f0. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NOGHH1942020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78962e48f71513c269c9a407ba54c75d6da65230e501e8fb87dbd372424a10e. 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/UKG3H2100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f85dde4fb37d75daeda3731fcbcdb64831497d66d14ced483e3edcb8e38d9a4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UKG3H2100071.
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 0xa60cfd707639da8a00f7eeee807eacdb52827a8823485f23658df65a73c1b372. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEYOK1429698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c1a4d43bb8715c66fb08ff328e22740986ce867cd16345cd256b1465eaa204. 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/TCABX1428365.
Na Gillean Nach Maireann / The Boys That Were (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321a687f91e6e6a37427416892a32b794567e10fdb3d342e307665746a239761. 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/TCABX1428371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5864581af4b88a82907c0d3acab97c66dd100db98a85bc3efc7dd54e6e50449. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCABX1428403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4832744da30217fe7dfa9a40479c1d49ad0527778f7e352f4407aa2250bf7e41. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCABX1428420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260f567df91d9b02ff0ac93a00f733dcfe16e327f455a6824ad76184facb3b40. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TCABX1428377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf2e2f1bdad0b62cdd00a2109bdfd96026b00be4ba97db5c270bf13ff000504. 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/SE5XG2129703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4ac981e7aad089968dee024739e82009c860472562e2f64a4360008f090834. 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/SE5XG2129704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e69b697dee4ac67dae2e26c67a9b7b5bac26b723fd90b0d3d350f1d6c6fa38. 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/SE5XG2129710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53747b7db1148efda0b82d45300483d7d7067eb8b7d925efbee531bb72c7613. 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/SE5XG2129711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5684b3136384b0b26f94e22dd68a1be3855b9aea63c635a54008f1bd21a8b56. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5XG2129716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08be57468ad776372deed1e0fee878e1ab8af16ee12a77ec3b478cdb0e27d142. 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/SE5XG2129717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3add6cce5490947aea08e0477687afdf4c4bb3ab928daef85e98ef21a64ab857. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/SE5XG2129701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506e45109bc35dd20c82ed3734d1cc5694e5c92d17bc61a769e717c38b6ef155. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/SE5XG2129715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3339b7cd52026178f04a204c736d8aa67ddea0a719a0038ea1cbab69daa77d4. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/SE5XG2129719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f6152e55b7ef9831380ec5945a47960a56272a0a5de0957a4858cd2f397107. 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/NOX9X3680601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a9b92b10120539c6aecff45de964882838296021ed6ae40deea77139afe716. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NOX9X3680602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a03a805576f1fa813df5045a0c6d1cb0505075a70a14c3439d80e8fcf0b3d9a. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/NOX9X3680611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fa510f29fd9697b848720605e892b382e34fa73c200c67ad62633e476b621f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/NOX9X3680626.