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 0x5f06a0f45e61c761a04a753196c0172002a7f268258f0c67c9df2bbf7ad35f92. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cc4ab65-1495-4b8b-bef9-ceff25a2e469.json and https://artists.proofprofile.net/proofs/artist/8cc4ab65-1495-4b8b-bef9-ceff25a2e469.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 0x30cb2fadc70dafdf0808cda7b222e6c02e0873fc2f24802d27c21c8a4365b443. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZHN92120679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9343a00e47420ea810ae9bceeb3687db7d1072942e5ae389a1cfa93babdda0eb. 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/QZNWV2142649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb547a60b3a6994b6a47ebf5342ca385f25bb6968ae09acb5e8e1006ab14fe4f. 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/QZNWV2142650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43207b315479111b7331a5eaf699a0dd5f9dffea981c8d222fe4cfa9dd1d25e. 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/QZNWV2142651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf78ed4a77a7c303083098d94faf473c9c0991b43c374e587ca65e40ad3d17c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWV2142652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cba5c1fcfde39a162c079fc5b66f7b9a9349494c9ab8cdc251777836813834. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:00:51Z), 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/QZPLR2129934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791622ae2087579021f1433ccdf0a4b29f535b919997ecdcbbf556453f1df4e0. 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/QM6N22547547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa5d689d0ff82a91fcef9153bd032c8dfeacbd47b2acd60f3883b047640994d. 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/QZFZ32245553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457b5e323177998775cf59f60b201c9983dea8977072ecca920e3e06f087aed3. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZDA42214056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafef29cd2371d2738b1e6f6deeb515511584184c0bafa541dcae865985f683c3. 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/QZDA42214057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dac1ad351c086f0b435e463e7a3484f234f54d61e790793cd475a39f77a555. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZES62231188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db599b6b97415926e6d3d6f283c573435be7023b420ab9dc9f7d8e5d7c9da8e. 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/QZK6K2263524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94136e0b5303710f14ee6a00712d7e5be97b972a7e5c6c77e4521f37350845d8. 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/TCAGH2236952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff61057e000b1b3ef78204a7f8fe34be4c89af9d375c45019bae0796d0e1a1fa. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTAT2244706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d19e7895c07fd183fa18d64256c771f2f68bccdabf13749a6717d2c057b486. 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/QZTAU2281654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419fd185696e44fd23b6b5e72e49818593da9b02295f82159b4250bcb6056f81. 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/QZDA82356912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e58376f560a74fba1d622051baa6562a77e7af6005c0093299a4c03c36e257. 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/QZDA82356915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b3255341192cefecd6b152b37ef6c238027896332835e018e532877a373a16. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA82356916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0576c172a5e510295c414d267f2c2c7749910b4689830b0e793d7d052f92f2a5. 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/QZDA82356917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e6246967c2088e9704e879feb546e9e95dd9e46ac7515cc9bc9bbe71e5ede6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZDA82356918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6035dd719b6b014e86b4cb91e0ef6e273c9e8e3a3a2ea5e2941a2f4b3ae2b1b. 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/QZDA52211503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafbf2fa7e3b89cc15205d07a86ed7dc0f9c63276d8d5f6b05f7781b37a17612. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:21:37Z), 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/QZDA82356920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6ab0654e843b9f8736a6a326bd473e6b4b2cfe0cb111951cc2142f1d07d3f3. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZDA82356923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfecadef4c6e37ccf83cda3c09cf55b9b0a5de8ec0c41ad8587c5918e7f56340. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZWFL2327778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e55be74f0bfa94650ebe4f4cb34bbbfce57f2549c511c4cc94a4d6eb6937ca. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZWFL2327779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612116772bf7a7795b40f8d2b4dd260b8f89be8b465d8fbd1b6afa763a6f69ae. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZWFL2327780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511801f35b4fe6214addff73c68a0b35e01b6d76c5cb2fc854d5c8489cb4f442. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZWFL2327782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02527f24ef926caa0e3c0eb59b61ac30d69b3690f24c0261fc1f951400b5b5d5. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZWFS2314148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7782a1f976b18d239b018103730511cf7f987fdd64509f5b56cb2e4aae2d6f4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ42461315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8444708aa990ea49c7e3603f3a3828039e8ae56e410e267b843333eaa64d6284. 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/QZK6P2480656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da3dfa3f4617d33c6d0bfcecf4b88ad42bf9789a698339d02c636e8834bca14. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:50Z), 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/QZK6N2411497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8e85bc65e36cc7890ad9994e01e45ee049946430220136737fc126270695b7. 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/QZK6N2426259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee718cdd63d94e6753cef7212d31790a806f7f78d65990345db1a8a2621c859. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:22:27Z), 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/AUGBT2438697.