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 0x773f70d2d5d1b5acfedfd46b0625da57d91a7bdbe1efb1fa4c11efd10e416c20. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ca0fd56-792a-4187-94b1-dfa4f3990577.json and https://artists.proofprofile.net/proofs/artist/2ca0fd56-792a-4187-94b1-dfa4f3990577.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 0xcbf93c48231b41ef0520d9d54ff6f373184b0db567de740c2673e9804c5d49b9. 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/TCJPJ1966592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230db9290379b12a909ac368936162e020adbf899080314dec5dea1fbe9e4ad6. 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/TCJPJ1966594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72b5f6326828561b2842168542ad3d1a7103b7728c4723c2c4c7322b9f235bc. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TCJPJ1966602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe516943a679c3ee2e53c36751745fc9f9550de2947991d522ec8f3b6644cad65. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:56Z), 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/TCJPK2052758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88f0205399605fe767d81841bbdea64d9c2f83ae7244e2582e70ec94eb89c26. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPK2052760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb911b7ae5dc5b602506198f7e85e67454af9a1de7e1d9e77223730a2580bff. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCJPL2006845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce24e982735087f19312098c2ed2de966c0f01723621e07d84dcdb8afc390918. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:53:01Z), 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/TCJPL2008058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14beb4968b61ffc43a0d8c2a730d16ac0a70c3b3e87402ababb85947053bd70a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:08:54Z), 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/JPY202000333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1a5ef3ac44870b2f9c3261a575b796f87c676235bfdb4bf891d72fce5358ff. 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/TCJPO2121027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f994746a0fc4e4e6da727978fd1028861e23cf06a709e5f896ae5a7ca19b163. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPO2121021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920b76201a7a9903178307960b4697265a2c5746ebef164450b922ced465e77f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCJPO2121031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909b064f918a543f3b9ce3dcddec806186bb4d471d658a5e483f275b6e0ab449. 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/TCJPO2121049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a724cc39fce936fc7a550a1c364b1640550f6f4f21a184c5ad24badfec41f97. 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/TCJPO2121055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919fb64ab5162d18ae176b228fbaa126eeae14ce8be87b00991831c2ee943e9c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCJPO2121063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d89b4fb8df13f02f38a76779e9b8df2e9f613fba033e820b4d95b462345280. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:04:02Z), 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/TCJPR2263442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1bb2dc79af01853d95d5cc0dad8e5696b0077a3935bd01971fb16d96958cfa. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPR2272894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccc35a59e3ebe256431cd716b3280d29ba84128444df897023e07ac2f358391. 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/TCJPR2272895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403c9844d6602c7d4f7d79333593152f99bde72b928427cc405cd06d0c739361. 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/TCJPR2272898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ce7e143c452ddcf3e97388fbfd7e81a8452ec2884deb8cf4352d03f19c9991. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:09:16Z), 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/TCJPR2272903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a2217ac5b67127ddebfeb25ed8e53a39aba73aeea8a407aeb6d96bb0147d52. 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/TCJPW2324313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d29424a274a2131ced33b0d319c7b9ae179c87afea106a02f56b5a7474e1bd9. 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/TCJPW2382290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0155b4fb8683a40bf6a0a29698682f46269af636319d0723ea099ecdf07a8c4. 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/TCJPW2339964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261a4dd849a6ad0327a52be0aaa5a5156585bd2c8f27aeff558ed3a923bebb0d. 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/TCJPW2382316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a2217ac5b67127ddebfeb25ed8e53a39aba73aeea8a407aeb6d96bb0147d52. 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/TCJPW2324313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50eb8a1393597d413ff48b959c53f4a23f9cbf1ab7940adf5e57a5ad79bb2593. 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/TCJPW2382339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7a2ea9609e7dbb1f447b06220e4f510bbc3ca9b908152f3bcb584e22c410ac. 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/TCJPW2382322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa553a1e06a5d8a7999e4e3252c6a9be51e0fa228ad3cd567f228b9bcd09dcd60. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/TCJPW2382334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50eb8a1393597d413ff48b959c53f4a23f9cbf1ab7940adf5e57a5ad79bb2593. 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/TCJPW2382339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de61615b97f45d0d635d769ba050d16d0f57e757ac7a7f313dfbafb230a73b1. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCJPA2475544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de61615b97f45d0d635d769ba050d16d0f57e757ac7a7f313dfbafb230a73b1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPA2475544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9d27fbf65a735ef2147a491f1f7a5c819e7a8f78c3952b0e4adecdfbf9352c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:49:50Z), 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/TCJPB2415478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ac99030182fabb6d06127b81fd1fdd091854780f738efc6bf6849596848096. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:03:23Z), 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/TCJPB2415480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacbd4b072ca27c7a54c09aceafb354cdfb1e7bc46f21971c7fc5a6d0b65f90a. 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/GXD7G2427138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df8eb54527dc5415e8f0155c265ba85288b0fcfb21b4946655d55afeb7ff0aa. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCJPC2492899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76db5904d537288048d855727d868878e09b0f76ddd2e4ae6c24866dd583508. 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/TCJPO2197905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe257ab27c19011fcf13cc9b256eda899280e75e5464fbcd57c20aa12445031. 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/TCJPZ2446931.