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 0x2340adda230b208cd738c960ed5b9714eac75405652a40ce29d250a283c876fa. 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/64376ace-e8c1-4844-a435-f0e01fc995e7.json and https://artists.proofprofile.net/proofs/artist/64376ace-e8c1-4844-a435-f0e01fc995e7.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 0x13eb88566d340044a50121ec9dae0d45e166502b30c03648dc81d110db83e65d. 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/QZS7J2135955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482da184253f24e926440a57536cf234e94cf970ed1da6d4441f63caf45f316c. 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/QZS7J2153356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c1b32e0cd0219749e45a92486b027f692304a0304e5d8c928944b1c8f84d70. 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/QZS7J2114320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e2f7e1b8c01b6a6e376b241c053da7fdf0a7dd77b1ba766d5c6a840a7b6dda. 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/QZS7J2146330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73f60c568670b3efa7237b5bc8659810248f0573849c3b3ff993f46fb0685db. 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/QZS7J2179025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f87095a513789fff0fdd9a9a90cd9aa78c078e59824d4ed38c72f987a5aa72. 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/QZS7J2143518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab34fa8794cbb050871abcbd75e2f84bb47f67482a51ebfe6c081da041339898. 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/QZS7J2162464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753ab9ddf40f1cd909089b149e789bb77ee08aa2ee483cd46f6731c1a10ef885. 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/QZS7J2164136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf338decdc10fc1c50d302f9ce749dbd257493787d5fee736fdd802cf6b791332. 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/QM4TW2470328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f87095a513789fff0fdd9a9a90cd9aa78c078e59824d4ed38c72f987a5aa72. 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/QZS7J2143518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e2f7e1b8c01b6a6e376b241c053da7fdf0a7dd77b1ba766d5c6a840a7b6dda. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZS7J2146330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482da184253f24e926440a57536cf234e94cf970ed1da6d4441f63caf45f316c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZS7J2153356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13eb88566d340044a50121ec9dae0d45e166502b30c03648dc81d110db83e65d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZS7J2135955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482da184253f24e926440a57536cf234e94cf970ed1da6d4441f63caf45f316c. 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/QZS7J2153356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13eb88566d340044a50121ec9dae0d45e166502b30c03648dc81d110db83e65d. 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/QZS7J2135955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4888fe56a08674973d3632946e5c5955227795277ff4517d948f00c00e4d393. 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/QZES81800868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461434a08538ce4b49698c6fce24d044c665d6f4a1bb4e11e031df8a4ce9985e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZMEQ2134671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822281c1a240fd1f5a659d8490b804ee77bda653d95701ea6d6a98c17232bfa6. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZMEQ2134672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dd01b312804ae98980850627df29ed95e78e5abdd628797da5f409bad8efcb. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZHNB1949152.
Clinging To A Dream You Don't Want To Leave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4419dbd5d4ed2f7b971b0ae6ffa3e6241a54163a096a452c4e84bfda27a7f206. 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/QZMEQ2134673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908fd23557165592a0120e205fb797c9f3c98957795f96fdd35114e965caf8eb. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZMEQ2134674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec664bd656883ccc8d72a1fab9cc86f48c6589383c6b52c18f2054e23bded647. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMEQ2134675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76375514056b2dd9ccd191d213e5e55b1215dc38d8419451ffa6fafc3d8b6b38. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZFZ32059981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf95798bd0991348d67ea2b3849445e57a87a44e91938cbc5fe738d6ca938968. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QM4TX2490074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf338decdc10fc1c50d302f9ce749dbd257493787d5fee736fdd802cf6b791332. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TW2470328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4176c50964ec38f5bdb257e8749a9ba22e0b376ed65541e2d7acd6df691ffa5a. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/QM6N22404997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab63351269116d7b9313c904272ffef1c5c013c24f56e297bca6c88b59a1d599. 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/QM6N22487890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb97a692d984df90c1e89c7a7c83581d808431720785707cb501e3dcc1e9e979. 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/QM6P42434504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4176c50964ec38f5bdb257e8749a9ba22e0b376ed65541e2d7acd6df691ffa5a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QM6N22404997.