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 0x21b038df13202a3fc1ab00b5f001fdfd936c46fd0c62f2ce02c37f829b6e3b16. 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/f125e9a2-985c-4b7e-867b-751a02b3d1a4.json and https://artists.proofprofile.net/proofs/artist/f125e9a2-985c-4b7e-867b-751a02b3d1a4.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 0x0e2e550b58e9300060ae8e92ad5f7d6b01546db260c4d970ab5b6fba41ca4d84. 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/NOAPI1688023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e61c51369ca0a0393ff63d7cc9387a0fbde275a1e4fbeeb83d0f8af05c42e1. 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/NOAPI1688026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f3ab2fdf54da1e3af8cd83982bf197cb33891df9c5e4ab902afc567a0e89b0. 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/RSA221601676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa63d16d9246932c271e1c835ceb011f0b0608e2e461b21d519da74e922caa27. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:33:15Z), 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/RSA221601680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f9339775066ce780f9958e91317d291b7d216bfb4b679b798b7baa941bbf3c. 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/RSA222010788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283d78dbc375e315b4acd0ac7d95dc04b43cc265183a19ea77b15cbdd2a56baa. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/RSA222010794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed601654630d04b473efb577624fb944b1d6e508a49b6eeff6393d841185d6ed. 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/RSA222010793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e9d6d6b69f3a7ac6ed8259ed58a8e2572a05aa17d3d0f03eb4b42b715af92d. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/RSA222010796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79420ff34ad02007368df63d36ff0e08107fab972def125979922e6bf2ace527. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RSA222010043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa757653ac82e2781161152beccffbdd9bfaf1994a96fc60868486348f4fbb371. 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/RSA222010797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33d1f4b7e5ea4a0ca0b712067c2e4a28899300b3120e69d0d2c0b3e1c5cf7d4. 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/RSA222010789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd942c02f8cfc2a6227aaa21caa02c1caa186056353efe8035c57dcb7dd763c5. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:56:59Z), 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/RSA222010790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed601654630d04b473efb577624fb944b1d6e508a49b6eeff6393d841185d6ed. 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/RSA222010793.
Agatha Session I - Surreal 3 (Live from Agatha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338afd320a29beed9605c62e4b218296fcd98f24a84da593b6ecd9a41e66f038. 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/RSA222100366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f82548489b8ec1beaa56192feadbfeb09b89ff37ee0bde778eeb7538677b439. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/RSA222091808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb08a1eef01daad232f9f32bc13efec15a99d98ecdac10a44be43b461fe501c. 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/RSA222307505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8329cf51a601f8c880ab87e391c27388f621435cff4c40e9cdc5fc19cda0b5f7. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:50:33Z), 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/RSA222308705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde039537ddcf969f75471fecc2e658db884eafa3a3514f72c35aba7022fba485. 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/QZK6M2077048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307d2f67db6ff2d15a9d3ed9d13eb7b1d109702b21a5f18e21a9d09d1612b0da. 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/JPD731000969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239c77a0d5ff34ffc81fc01058999d4d5d17e766196b9bd2302ad0fd98d5d098. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/TCAFK2165396.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch