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 0xdcfa44c11a3c2d803dd50a911f6cb790563317fee6503bd77e682f15433b1d5b. 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/372a3582-12d9-4e29-b7c8-26abd5e03fb3.json and https://artists.proofprofile.net/proofs/artist/372a3582-12d9-4e29-b7c8-26abd5e03fb3.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 0xf45c6310dc8537319eb5e3450fad114c780a8982e9f5cde2a6949c94514a9101. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CH7812039310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3480bb162a6b88e20c676f5dc2a8f97aab717466a88477ef1cf37a81be745b4f. 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/CH7812049986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8aa34f17a6b1ec7d050910508f4d432f13626e9274ef579cc9253bf5a94012. 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/CH7812061843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35eb8608be5ada4706b42203d1861030d8b6c2ddf0d8913a8289d0eb7d9d618f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CH7812066469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f535492013738c9109201827d2f03c365f846759657987a12d97536a486e831. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CH7812072694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb435229eeed97b36483c5300d66dc29638d22cf4e86a2ee6293cc3a7e4581c5d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CH7812188933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadbff8cac9da309749be02e13a9bb4fcbeb63a516a56a50f111716507ae5b42. 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/CH7812197809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530af8f5fb67fa40e7698b910bea422d1675ce3e7f5350fd2e6f92fca56e947d. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:47:11Z), 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/CH7812219348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d2691bbe368697b720c8bdf663017070e21d508d4595f417218b1a9d7dfc28. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/CH7812229121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8536072b02e918777b65b589fb12b93f2a183f9819af78279847c5e7a39e9602. 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/CH7812231634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edc264250fe6ebe9c73cb6295497d0570b715b19745d7d91d8b796ee156e926. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/CH7812236908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b9340931f0a4e64d7bb4e649488cbe3b6024fca72346988e21c562cbfe83ce. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:37:52Z), 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/CH7812348340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140af47bab8633ec5baf6273cd1a64103d57b4aeca0c62c3e8d0beb9063b3030. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:55Z), 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/CH7812349963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165c47260be61d7eb5c26e60e07927e7c6428275b70bb7e3e3d4514ead227c6a. 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/CH7812356501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c79fe66b854eff28894228206cd78cc79ea352f00151174c0a3c667e9082301. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CH7812369937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc220e818bbbfb609dd12464d547c76e8e96bfef1d2eb2c23283577e6a5af4300. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/CH7812401729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c91a0291ea11868ff4c3eb1814c78600cbceb1832f63eee90a024cdc9cf675. 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/CH7812406312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8933053db454cd964005da6467898831302a27434c8e88f1aa2963f0ed9d0d. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/CH7812411943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc5ed2f2700e5324f2067356bf98965ce766b8e4b217b80c9ec533767d30b56. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/CH7812421804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d40c621559d6af6e7502e225ccab94b7af1dc38e5840d32a81a271e3a47885. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:07:57Z), 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/CH7812527259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c07f6e31bf5c8bb1398f03efe634292723b26c254025e7a6559fb5c5bfc9db7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:21:52Z), 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/CH7812535376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe525bddb8a775c6f8ed7e3a3d834ff6fd0eb7d8e36f9f8b13319cc51b9ea610d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:29:26Z), 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/CH7812543221.