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 0x55c656a493ecd083c2d159ea989c6d56db1eeff47cb7512f589c13683d83982e. 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/88ff4039-06f8-41cb-b632-447a0cf6ca9e.json and https://artists.proofprofile.net/proofs/artist/88ff4039-06f8-41cb-b632-447a0cf6ca9e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
JBB 2015: Jaspa vs. EnteTainment (Studio Version)
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 0x0bba1e4ba540f157d196365a72c1e0e03d96535d13fa50b62b935a78066aae62. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZ901501875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1e619923f776d5b98d1cd65e27674f3a12d712d7eced1b319b670ec27f5366. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/DEZC62401178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37338f579176d07c240f5ab1b8712820e9dd5792e0352f0c4f76691893ff10c1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/DEZC62402659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4b29c5fba4c8795b3bb933704d18dc34c4b3ecdce8276fa458d2c6472df8f7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEZC62402660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cd9598174e237b6068c2ebb894689fb23aa58136e41ed64a59a52f9993eb4e. 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/DEZC62406026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c1ec368acbff6950771f85dca05706833cea628552b538228d42840d19a4cc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEZC62408642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04214ca5d32429b457497b1575e0b09f5b52f4a04ea2720ac60e8b1761a3b575. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/DEZC62412258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e52f53c585aac8e2edb64ec12b42769dd6fbd348920134ac4c7309b192cbf60. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/DEZC62435473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0aa5de36bc58e23ecf819b23813ad8248a7731131f038216aca2615aebc9b0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFP2425307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a2f8ccfa5cf132095ff9c9265ed7843b2de076487b5986832ae4730a55ceee. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZWFS2498536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1615e868c1df3cb03e56b694e17aa6f23b7bdc09d7e640716c86161ae8d4695. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZZ7K2470953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1640423c7c4c51e96fc323d7b28b5e1cf5cdacc0e2a3217fc46712c003b24fc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZZ7M2417267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4978b959983c6b1f738e764ee483a9476ffc1303b13e10424c6d15741a26b498. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZZ7N2435835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16df526ce2bd2528e58e00f88a5124283800efc911b440851f28ea15b8bf8ad6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ7T2424436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3a1aa3513b8a7254c343ec1ff775039ba2eed5977cb339c30836cace9b8d0d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ7W2452118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dd7c2ba7be72c77e84d8b9805ff3ef4a13c46bccae21d51fb390ef6773861d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZFZ72524230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc75971bf51956e0992e43be39e798a9699e4b5f02b130c3cecf8478ef9536c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDA52514567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04e84b369df811470912ed5924576cd59e0cf73e373371b629ffb019d97d9c8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA82583278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0cea89906e2191d6589fdaccf9390c1afb0102def80e22e3bb0930c7166f8e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZES92544716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537cff6b9f661d1f042dc92fdcc9936e301fc83ed114220fa35c0ed547bdf054. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTAW2554948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eaa0286abf9dca88b8fcb3052ab09e2e509860093f588d1e28611bee6687e8b. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZWFW2574542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91ddf31395c8e85f07a71e6d341898450210d9a20b788cece6f3ed089250509. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7U2563539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19e2cfb895a25524fbc7f19f4fd2ca2be72cad4099235af79243e2d91c7d21d. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZZ7V2564741.