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 0xd7025cf561f6a8e2447cc12048850e9453cd9490d7195012bcb3114840e8feeb. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b80c17db-15a7-494e-b5e1-bcc5c7d43855.json and https://artists.proofprofile.net/proofs/artist/b80c17db-15a7-494e-b5e1-bcc5c7d43855.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 0xb3d73205c7e8c3a259bad405977c7499ceab07027e2868adfccdfc646316efba. 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/US83Z1902673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f73fc79711396d8efa97a9db54cfc71f3fc5c3681f8b944804455a9f6457001. 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/USA2P2104659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4554ba2d77d5f0e2da5de76403c31b9d2f892d287fa5d917ddc04709d5f9df. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USA2P2104668.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22dc9ea3d3f7ec9955105ce271e4f5c98cbdefd4306776ed625d3d700198a22. 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/GBKQU2043890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6449d03592583e5f2c920d8c3b1f8f8e1f588db6f28564ae2091ea846514fdc0. 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/GBLV62010841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ceccd431758d20633e3856698a9449aa54c46db92287bf219fcc72ca0d8d67d. 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/GBLV62010842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20cda2ef9bd5557b33f9d2d9241847626120ffd1c92d39ca764af0ea127c6fc. 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/GBLV62010848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6216c75e4b0cbeaad34e2b43d7fbe4cd73a96c40e7455fc65ddd930ccc0909e. 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/USA2P1694259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83cdf2faa5bb3671503566ef089a28d28a7ea49e975271f1aef908068dc5f9e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA2P1694260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6eec5e213cd3cdaf405953539adfb32e044b3eac00e8b21abb56b7fd1a86f9b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P1694264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caceb5635239578dab5ba2dd3b482586cf61964b61da1d56f666fb5301e724f. 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/USA2P1694266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa925a8e2a8ad0f6d084c9b0b46235ff0420cbeb629a6920796ad1ca5130f1564. 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/USA2P2021385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e8d0b4dc64024f85941b6a68699d180b5c340e4e6aca79600479e6d864e48d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:25:46Z), 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/USA2P2021390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c350fce80fb840314bccb64ba7301b0804611cf99d29028f1024261f9a6fc34. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA2P2021391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73bee1b53af6c9d119698a69a375d6c99cfe2f6701c6579e348d0e6c6809c3c. 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/USQY51789228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6108d19aeaa0e0859b883f3fe4a8cef211011433d11605f71b65b5b7b4421349. 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/USQY51789233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060c37b7eba8634474715ae3b4fd0fa29a49e712b9af5c24314e6d541f609f92. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USQY51789225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286343322e4b36232b2520247fd0b4e08adc41b9bcf7c0e021a6392198374450. 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/US83Z2038376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834b7238b529fef7b4e94bf6cce58864122aac1afd6eeaf08968577d35f3030d. 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/US83Z2038377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8204cc6fd75d4ba4734476d7576017a9b422af10f59903e5780ed0f070fbeaa3. 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/USA2P1896178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9a2c83d3e223ef4368f35b56a19ed14b622bf01a2b3fd01ef61a656594a3d6. 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/USA2P1896180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d9194ecc193e3d3a7d312e2cd50ace05171000e3d9fca6096354824b5e16a1. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USA2P1896174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899f71d402332fabf90955a8041c7bf8043921f7e6f6545b2c15aa6345df96bc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA2P1942400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f83f59d5b9883c3864e397173a2c9ec89ebf4ce422fc757d96ab28be542f85. 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/USA2P1942403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9ee771c111827e8e474ee02c0a0b5de6c94d6352db4a6d894688606a5d1189. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USA2P1942398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c120020a2aae8556b0dc70d773220464416dd860c82828fda427bacd621e94. 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/US83Z2105238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a63381f0d9340b429d79a7f5a3a2b3a46339690239c1111b8eb83053e9bb12. 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/USA2P2211275.
Thump Tunnel Syndrome - Brojanowski Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6089b5ca17c6deafb4fb6cc67a301e172f3ce2cc29e65805bfdcb1bc8bf23c8. 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/USA2P2211276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441d1fddfba6f932f40555987c2e3191242a67d0530a9ce4ee1c1941c2c36776. 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/US83Z2221765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7fd85ce93675e29f47840e83627a4aec3449a794509280f0366d277af2f63d. 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/GBKQU1959172.