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 0x532008382365d95d09cd59c61b6b7ee7ada112f17593a12458ed7a2504e0f3c0. 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/a1ae0d87-5662-4b2c-9231-5506b31e0704.json and https://artists.proofprofile.net/proofs/artist/a1ae0d87-5662-4b2c-9231-5506b31e0704.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 0x5256118b17916baf295350233d3681d7094743ce325244a93f02639f1312075b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZHN72443739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc3a096f01946c2a56e6f0378f7d803d32f108d469fe98aa5685c2cd9b07eec. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZHN72443740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2b6e102c458495433bcb5acede34314bd27a58edc11b27cc04f0ace0d829fd. 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/QZHN72443741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884db6264c38acc4e8694b4f930dc1cb7414154c7221e5f40a58ef443643d93a. 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/QZHNC2455043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240f86e874bd180ce91198ac2dff93ced0ee8296ba9af6d3207c084a8002dc17. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:07:50Z), 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/QZHNC2455047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf117794b0736ff9644cb783ec4ac32a615399d7c8c9c0928bb238220411d94. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZHNC2455049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607c2316963dc1f25a35869044b1c4b301d66c1cfda7df7513f268ef19836175. 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/QZMEP2450198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e37a6c00f1e78334bb72e20f03c35b6e67c3b4e9b1db950b9ddc22bd6df504. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZMEP2450206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb2baad6d330db07e830fcd2047a271ad3873a5637ae017c60e024ee374976a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZZ7P2486564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e462fbeb0a5eacafb8b15d27ca2232a1af131e1c6a3332ca6e8b01311138f82. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZHN32598681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94e08e8292b24b78f96c07df301a7c62be01e12f913738cc3dc65f6fe0f7c5b. 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/QZHN32598682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdbdd669a128ebcc259f4940ed7a62153c6a844b8eb84ad9581fd49fcc6ee64. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:23:47Z), 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/QZHN32598684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0fe6ecb3d769e221236e65345d088f66598dcaece2b55ae1718fa2745b24e0. 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/QZHN32598685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb453b88acde1a246a64d471239084c0dc086fb5dcad61f7c8abbf501ee513a1. 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/QZHN32598686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb789be49cec179ee43edae41474e5c6907df885efd2258feeb86547c7c6fc26. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZHN32598687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9a1242865e57eb441f7fc015826ef23b10001dcc2e9fbf4a5b6d0c7c5999b6. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZHN32598688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b156e414271ecdac0e741eae6d87845bfc6f31439c74388cfbc76c9c42a6a57. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN32598689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e795cad68ef51b3a78cd3865813151e5611bd3c1a7d12e6bd78cb2ccecf2b6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN32598690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc991dc6ab8fc878a7200411e8f284b1bf2a3de8bca0f37a61bc7dab6feac38bd. 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/QZHN32598691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce14dc6cd0c15a499fec7fcae6ca6c3e9eafc4b20f44497205e2c9ee01313d2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZHN32598692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe607995e3023d72a40f1db1d91f32147caded53d0f3c725dc91d7898b8d40513. 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/QZHN32598693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96a0c3d8f48e0e8cec931449a1fff0b158a4673e5817374ab6b6d1fc8dda8af. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZMEQ2515367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd48fa45485f2b1e326ca32347864d61755dab0618db98ddd9cf4042407d901. 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/QZMEQ2515368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d6fb0bad158ec77c87e5acf42dec934afb317720ea40dcbc50c6196bb5e294. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMEQ2515369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f2f9a906483c1aa807a154f83cc2b92e7b77b5e665fcaa868d0196ec83db0c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:24:36Z), 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/QZMEQ2515370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097470d5eba89105b69293ec84deebf2e81decac6b0b218e63b365ee5b9054d8. 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/QZMEQ2515371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d580ec3c0b3d7e0adc635b1430e6cfbef4ea4defa584e8fb907daf230bb1dc. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:48:53Z), 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/QZMEQ2515372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baa4d9782e9a97fe10da816dbb4dadba212fec672f0205505f1ebed5d73f7ab. 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/QZMEQ2515373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3769e51fd35f7505b7027b669cd309d9bfbc82c8ec9fe4a2abfe58e9339d225d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZMEQ2515374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb800251f7c7f80c66a5df5e874caa22735cb127fdb30bc04213037f3a4215ca3. 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/QZMEQ2515376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9f43be537463a670659b4fc4b4e34220ad490e7243dbcabf0895323f8d9925. 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/QZMEQ2515377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d403035b443e050b0fdefd1f34b5002fc1580ade0e34b68a8af9d7090f0573. 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/QZZ7Q2579327.