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 0x1685cce297e73c49ddc1a61c0b053f2e3d4ec28964de90bc84ab702b080eb67f. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61352521-669b-4cfa-81d7-a8a9c4519de5.json and https://artists.proofprofile.net/proofs/artist/61352521-669b-4cfa-81d7-a8a9c4519de5.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 0x91607bac82a87e776eab24762fff6532f69b288e74935bf33c1e9fbe584d8e4e. 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/QZHN82349414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120dd3c4df5d78a44513ac89d28b0b0d3176ce9dcc2ea59eea9c6d97ec65c61b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZWFL2387258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0b341075d0028f699b4f7de82f584e2c9f4ddbacc67d3871917018f59fb4c4. 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/QZFYX2440005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1fcef7e3295a64e7359e82e88e3e7429571c2de8f568afc7db68b7ebc092b9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHNB2419432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc60d9648e9f564fdcf0116c131d0bbf0278af801e0f1fd81c3cb36291d21425. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNWY2423549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0293c7a870fc37842a0b653e44830fe33e126405e25d453de1d906d83c165007. 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/QZTBC2489520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72302cf14e07642df30e3f67271d0d120b3576ccb403a6ccd194ba6f5e7afa62. 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/QZWFQ2435790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bc73d04b3cb45370b3473c3432b7137a37e531df68107a677cd5391d75568d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFX2403412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c3ebff1e157f3f601be5937be38e0e4050d41f15c61585df6d12a3784c6757. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:31:58Z), 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/QZZ7Q2485748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8c09158886416be6758656152ab5a25f51a25bbfe16c5df513f6aff3d4b3ba. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:07:06Z), 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/QZZ7V2472607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fde4627568c67fbed50639c11412633d3bc2bdbccd100dbd68100bb06f3d5a. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QT3F32420597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd04fc656994437d8b74caa3be55d4487c10ff4437d2ef7e40a56bd65009cd44. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:29:59Z), 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/QZDA62518583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0d433c1f797d058a0e22e9a1938ab639e1b24e2b58fc58b4823f6ffbab210e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZHN32586735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ad600d0fdf22e54d1b3fff1ba49ce0239fdcdf3ec902175be9207b17d468bf. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZK6P2506460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cfa01299150acd695fb1be9f3519ca18f0cdb7f43403b0e00a7512784048e4. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZK6M2585778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09288330a2faa45a0cb84f9ab0b2622f90471cdae917732c98ff7b8a234e87c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZK6J2548133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df26dcebe8a50725b697525edcb8d8ef6f1e01c68cee05ca731222a79a9eb19. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTAU2523250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd9668656e51d6ca09c602d3a5b4f2e4b863f8720c8729f8c5d8054e3ca9a3e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTAZ2580229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700d7908ae8d725682918423f7f1f64e22db499c0cb603efcd44448f7ad47d5b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTBF2582992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5118796124164879827c266ca2b89a4fae652f3e066e64bb38edd577304783. 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/QZWFQ2592877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5efcbf1f1d58dc6547cff091553722bbd2d852c0e9ba76a8899cf8f733232c3. 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/QZZ7N2504609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe23c319409f2c5f4eb77c62310c3f7b3da6a8c859278d983f86f3d26336e3d4. 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/QZZ7U2554277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf879b1fdc50bae2c82f8066403dbe5f6909d55a2f9f73958ec623f21eec21472. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT3F72569602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94cb2ca9f51b1dfe07efd1aa88823076978ddc6351332b2b8b989fe364ee102. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT3FG2581542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb9021983e9d138a853afad24b71fe5bdde63b69b3ff3914f6491391ad3ed9a. 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/QT6EB2522866.