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 0x6d4109aa99a9aadf9c51676b35ee3fb9944a972ccc32b6de833d8bdf08522451. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/655c7146-5aa8-41ee-8bf0-0e81f5f83068.json and https://artists.proofprofile.net/proofs/artist/655c7146-5aa8-41ee-8bf0-0e81f5f83068.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 0x7eee25394d5e1e749b1d9225edbd5cd92946139772d39f137161f02403107431. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:25:38Z), 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/RSA181342840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1a5ef78225ec7e54dadde622e4b53e325ad382fc1866674af7af6d4077b425. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RSA181342844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e3a42f441a3e2e76a94e7673023c85631ee2f3aabb2d932a9ac3421bad0ff7. 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/RSA181342845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3eb0314dfc63798762a196d21dd95cb5a6c75375e862fb2060b8429e641e2e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:22:27Z), 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/RSA181342846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92be41f3f6bda742b4b2c0c9fefbfd400cf061d3ca3a08139bb28c3907e2cacd. 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/RSA181342847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb460fce3dbc3cd99de267c746bfbf1f7311522c295f09e5af989c31f858b54c7. 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/BGA261301135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6f00120a0d9de0b0f977491f7311b4c9f21127d1185a893ceb193025a93b61. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BGA261301139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0424b1847ac34dd0cc83e3b92500f4feec170e3d2838c5bbb43f1f0a927fe2. 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/HRA042095172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d461726a6698ef76735adaeea3be63a3c29724b511d0b2b139209bd75cc96d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RSA221810186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423a0101d5070ac2f789a1923e4a6a868fb831919c3824306c4329f96130f7a0. 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/RSA221810632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee83eb7512ae06f2cec3355fad86eba9d5b7ef73bf1035d3431bcc6b33c11ed3. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/RSA221810633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf294e3a57c812a4df5fb0a1f1ff666a9cfcb42ceec87f5d2527020ce1a0f83c9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RSA221810634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615e42f396afc3a5ea73c590dc849fe787d403ff0b55606988a0d18264206677. 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/RSA221811209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd760879102013d47708391a536ac1b32336daf9b60da10f4e9e973328741904. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/RSA221811216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f57c5086b1966b215b2824ffa676ab40f6ff1f5e6a047313522dd8f1ad54ac. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/RSA221812443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1a75e2549f19b3421d3a776d740ee9f71d0c22e9693c248b5defcecf8d0ea6. 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/RSA221812444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a2a46f071a830528ee70d02b0c1ce075523437a9011bde7b8b8c1c02350776. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:11:18Z), 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/BGA261111159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0547f7cee5efdd7f9abb04d45359a6364c8e745160c7bdd63f14b90c47f63c0. 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/NOAPI1694795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a52cb3eaa526fbd1411fcd831b2e005c6aab9c8e59f03b302c08789acc37e4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:00:29Z), 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/NOAPI1694802.