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 0x23ed663bdb915d7152b6371208cec502bb11af1af7dfe39b857bfb8deb3fab59. 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/38814817-681c-421a-8d99-0c71c6906e77.json and https://artists.proofprofile.net/proofs/artist/38814817-681c-421a-8d99-0c71c6906e77.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe009983fecbc285b68472cee9ba2594c7b6f1f5fec78a4cefedebce2f790acbf. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZFYZ2337485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa266aeba43e8c16be4a8464ed2ce06ab34b8d2dab286be964e7ac086d995e182. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZFZ72322657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8689f99eda50db15d3028940595ebb615eb1af9d474cee0e12e0c5833b0b65a1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZDA52351590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7c229bb4e1917f372a8cb26e1671a0e1eb95955260c5d0d08be70227dfee07. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN32387482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30cfdfb8edd1938e2e6743e4a7de77d89b5bb3300b2bbb4ca4280cad0d60f7a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHNB2376447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ead33871dfc6f29ae2868bad5328170636b143e0e95af1b7fa4af5132b1c91. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:51Z), 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/QZHNB2376448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97387707ae579a7a8044a6dc8bc0a8aaa897f210eee62206d0cf70cb36f13ed7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZMEM2385082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1eb353c7170731edb4e6d9fa8ceadabc404539553a823e2de5332f07b61092b. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:32Z), 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/QZPLS2341959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6304f0a6a0bb9e2f6d1c17c20aaa4b8f39df125bf06e673a524bfcd21d9ee2. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:07:16Z), 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/TCAGL2204266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59cdfb93a6a39f27931d84bbd7289c0624c81a2f883a65ae1b65cec817c4139. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZHNC1914094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81605278b36286afe793548de33375c013cfc87bf6caf7b9ad9d1ce8395a07e3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAGK2274633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8707ab57e0d967d40aea7940ab363af2c3dccf391f3837899a64d98c248fb0. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAHO2373142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48863b72f515ac9a952b4b86495497627ef6e9d1fdeb45b521bf2311786605f5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T02:00:57Z), 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/QZK6G2409756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe009983fecbc285b68472cee9ba2594c7b6f1f5fec78a4cefedebce2f790acbf. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZFYZ2337485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8689f99eda50db15d3028940595ebb615eb1af9d474cee0e12e0c5833b0b65a1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZDA52351590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb142663d7ffb9690161c341a01f52c85603f2152088f5495650f865312c277. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZDA82313222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2eefb77d12471adbe2933668ad9a3f3279724f6cd4c4c3acd4d3da8a7078428. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNWR2328166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75392d5c68ddb244171659eda5696a5a6946d175ef232e005412da77e42a7df. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMER2572425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe667e3e1d8dad5753c92cc4c8992ff6991c7491a4f4dc4c42c104d45746f5484. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZMER2572426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f55f8ef6207a0d5261fb8d5f5ff2fba3719c84c806e33911f1ccfa0742c6d04. 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/QZMER2572428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8c75f882f97eb17434f14360323958fb2c1f4fb59d8e705d69b86e3833722d. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:37:20Z), 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/QZMER2572429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cf400d953ed26d03c73413dddd00cda8c68e64dc33920e22ccdf0e28083611. 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/QZMER2572430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9d4dd96f0a3d2cbae555e9516b95440f951630d8e0551d479ad5e58cdaec77. 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/QZMER2572431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c85d48f61c697197c6b72273b3777d5b63d22e88f038b5ed602e4bcda457bd8. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:43:18Z), 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/TCAJR2546913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6b95e33f635541db5240a0693b2ec4b3ccffc3dc08d5b85a76ba0e3cb0c14b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ZA40S2500701.