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 0x71566c7c9117ce43117c2354186f560c4597fe38e124cb5b7c9de5c05fb78770. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0df754cc-c7b9-4f2e-89f9-a56d7d087af4.json and https://artists.proofprofile.net/proofs/artist/0df754cc-c7b9-4f2e-89f9-a56d7d087af4.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 0x7251b6bf6e2e0822f83085e9f9bc0e746d04c3d11e3771058347d07e8b260373. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPC2421124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c7b1085f56770414049d62cdc701ba7d0f719e31dbfd1515b63be370c53e8e. 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/TCJPD2428708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edfb5832ec50b2d6112a03f4139abfe865f0d84e7ba79d4893c9465fafdffb7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPD2428717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410c4448f466c4fcbaa14d3493ee9546419e869d6a6aa384d687801121340cc9. 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/TCJPX2368078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d332a7cabcecf59bd042a24a910d2001cd909b3286bb96a8c0dcedb2f53f2df. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCJPZ2413381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf3c4b765b7819b3c93c09cb981c490622bf3bb5c11629ad2f0b895e64cde6f. 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/TCJPZ2416059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a0d67d4d304101f56675f0fd1eb26e118b3923b39e72cf1a5da92bea33e9b3. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/TCJPZ2456505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb7d97ed785fefd8a0678fcdc64df25a23317717e069e94237c0866ee29ae5e. 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/TCJPZ2474537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335bb0b50106c719dbec1677ed1928f8d2cc851b6c32faee66947a009eb7ef5c. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/TCJPA2409675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf024fb7950333f195ef652aca8918430749b4d6e5f0a8239d849375519179c84. 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/TCJPY2498185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b9233630d1ecce50f43a94ce51585ce0333d5a6a1026b99c4d5e1301310a05. 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/TCJPY2498189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a24075491426d86f371a00a8846dca0d8cdeba5872b8b4a704150dcdf29244b. 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/TCJPY2498191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdca5eac980da877168039c4ff5434fdde874b1596017c7b2d1ca0497eb43184. 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/TCJPY2498203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1930a4073cc6f2632b94f2f66cbb85d5d8ddf7f723b9e739f9b0632fd35edd10. 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/TCJPB2496484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb7d97ed785fefd8a0678fcdc64df25a23317717e069e94237c0866ee29ae5e. 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/TCJPZ2474537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a0d67d4d304101f56675f0fd1eb26e118b3923b39e72cf1a5da92bea33e9b3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPZ2456505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf3c4b765b7819b3c93c09cb981c490622bf3bb5c11629ad2f0b895e64cde6f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPZ2416059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15707fbef3c8944ca9b1fd2f720b94b0f9ff9032285a6f9a2ff3f21c58d8a10. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPY2342568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410c4448f466c4fcbaa14d3493ee9546419e869d6a6aa384d687801121340cc9. 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/TCJPX2368078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3359868d5b52c1b37f317451c6d973aa0e22203a100393d23b17fadae5f1964. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCJPX2331992.