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 0x030c7cf41671af1407bdc43271bbb17257655e6f4b7060561190e33a7f4ee573. 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/608961e4-bb20-4684-96e1-5604a7aff7aa.json and https://artists.proofprofile.net/proofs/artist/608961e4-bb20-4684-96e1-5604a7aff7aa.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 0x78442aa9b5d05bfc47ccb85e1d801c63c934cbd228c8ce9a9602a7b6af08daa5. 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/RSA221811665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b6a7513a54dc6c448d28f8a5f218dd2ca3d1f3c6cc0da30be74f54ac92e375. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/RSA221811666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077b68cbfc00b92d3431fc85fb7df1f82e9e8fbf3f32193c6b736cd4cfc5d50e. 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/RSA221811670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d6fbd4a3ab447f845f38cf770624e7eac375b0a5e6394fa6cb7b6308c05b87. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:48:07Z), 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/RSA221811671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8c46f465c7cdeffcc4b4dac8edc11694fc2dbcac2ddc54a20d33b5024b66ab. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:02:55Z), 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/RSA221811672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa9eac96f7c1152f1ce18ca495fdf59904e073601893a764a0b33996cf9d019. 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/RSA221812773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69788434db8c8421a8f7ceabc22869af92b9483b0aa63d1f8993bf17de3beba9. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/RSA221812774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31b816707af5aa2819d06f91c0622516d2a91794b3076e52dc5a2019c7b0e65. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:24:00Z), 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/RSA221812775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541c73c699b265ea265c82ccd7218ecc5a26cba0c4d4b1a14deb58d46ad10a06. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/RSA221812776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2c110a3fd83172b3f0564acffe4ed23383c38ce12377e2ad4ef1fc524f8b25. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/RSA221812777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975bfaa6f5c9b09ee68495183bb9d056510780bdd544066b33012b70520a7a81. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/RSA221812778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3d5202681789f648ee20573c6233793fc6b2c8bfb48d46cd5384ab11563a1b. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/RSA221816101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0433fc3a43db1e71c3f83549305bdc906b9c71a4015077b831eccff37477b7e7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RSA221816102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489813a131c4bbde6b0fde5ca06d02d95f4f5afa7c010fa2946dd163a6587174. 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/RSA221816103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecaebe4ba0a80a086bd372ffe09059ed4ed4f557df9a1ffe987602b960835644. 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/RSA221816104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcb74512aef01577d80f485ee3dd8a3661e1d48170ce84c842ecdd81c2b6f37. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RSA221816107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac454b82a3c8052780147f6a8348cf0848241b42e83e52b1b592d671b95ef92c. 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/RSA221814945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34892679f8952fb2bcf5666b585214ea7f9c3e877d374153580f2af4ab0cc7a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/RSA221814948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f740f7c4e4d245e6ae466975f0456640932256e453e9a51d0a52e8da691b88d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/RSA221814942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f835281b08d6cdbbf989b24e1f5abe7f8e22ff026cf7d2d57fc083ce870cbfa. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:48:53Z), 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/RSA221815406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd6c630a63c0c8aac0a9b290537040243aa16132ba662285d91592ac641b96b. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/RSA221815408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423403a44b60487d716489c02ae1d9dfd9e5e1d8ae07f85d594afc5b57d6d148. 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/RSA221815414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f6b81e75ba0284bce5bb4df060db3a35fac4ab536c0e99ba9a32db4e21def7. 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/RSA221817127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493cf82d5e3117daedf35d5ee8f96372c125fea4de84c0f943eb668b800e5a7c. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/RSA221817129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9749a2d26cd5112f561f3f2fb3c0abb0acd4f8122a10455218825a835bf5030b. 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/RSA221817132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1cf0e72f9f8f988e8828f79b1bf56dff6b572b4612e988abc46e82cd0ca782. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:48:40Z), 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/RSA221818337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff484cf9e03645398284a9251d02a38c01af4ded23c3cb22917546397021c0ac. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:45:33Z), 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/RSA221818338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56ec6d958c32fd4113e3c8d5362c80281b39b04c0672b416e3f0fa688bb6b6f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RSA221818339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e5668466a9799b7a99ee2e94ad3e850e5b82b7cb6e1ce086a87859ef6dab13. 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/RSA221818340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4add282204204cb97f466aa1bf5fd5449285cd2cfdd9af6ffa83824061542e. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/RSA221818341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cdfebfc08bb19c15d826639e3965ad7608d0dc2f57620ee9a26429e449fc57. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/RSA221818346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0468a8805a27dc435875fca76f905db8079da006de4fd65a85cdc88b7583c7b5. 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/RSA221818350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0645f8e8e332fd0682cf6dbd9117c48d07c381452b8dba80ebeca090bdff95b. 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/RSA221818352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0cc1a561705bc166105be350a55fb824ba4a3de50e45e168d307b91e6ff792. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:38:58Z), 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/RSA221818375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa47a6b25633e7090a840b5954f27673e8db00d3612c6ca02b1c72fc4f3d7922. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RSA221818357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c0d2a5551beae61a6021123c71d8d2a2d4b375316c1de0be195de3a34a7c28. 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/RSA221901429.