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 0x315f74e427ee8fc286bffe2a32bdf3a23a0af93fa57facd939bff1c06bcabe58. 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/5e149ac2-ef3b-4fcc-9b29-8f4f555bb1e2.json and https://artists.proofprofile.net/proofs/artist/5e149ac2-ef3b-4fcc-9b29-8f4f555bb1e2.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 0xc0dedce1cc8d8f18459e30bd7cca1b555be59bb37f5ac85efe0e7938fb16c830. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBWUL2466349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9670856a99486a93b5760329ed4a5e3cea97bb85646cf7b9fb26eec287f9c0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKSUV2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b7eda953601249e9226237fa59d9341df6910d689f6c5083538a8c7796e638. 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/BKSUV2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7ea7d48358fca4c9b395e5057d6d95d994b008e6a31989852bcea0600526e6. 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/QZWDE2333856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6624a9a7f6a77bee7c28c3083406e41f6d3b82e1ad0918697ed12ab4c37972. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRRGE2200354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8625597da47aa7be3f157e72b07dcdbc9d7d718c2b6d309e1cdc39711f123e3d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2400908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c593d33c03e6cc79f8449545cc8716d752395acc76007925f4182f2df38a77b. 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/BXBGP2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05038bfbc533eac29fb4f630311ca3878cde32016f4484c053ce36c7dda60a57. 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/BXBGP2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd159a7ba0bb2a83f6a31e6a5fca396828e82dbf6a1bbbf2624b96954b229666c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2400892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fc4ae92421db308b105a1bda991292e0780f77c901ad821bc8cfdde5b191a7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2400894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0354bd0dcdd111c10fa2eb9ffffc28e86c43c17d31004793d67219d3f89161a2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNMY2242346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9456bda3e34cef1690965466ce26bddc6cbde23e5e884cf53f0868067593aac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKNDN2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50041693ad7a7474748ed9039f35027381326950b60dc69696734be8b2266d8f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2400906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1e36d98baf7682fea172ebed002f14ba3cc100594e17013415d13bf9df3a63. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRGE2400910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9012b58382858374beb3dace60d6f48eaab8fb09ade17b6ed28925c121fdc44. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2400912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ab3957f260173e9238dfeb433be14eefd905df4192c30ae8e1a436b9b56a9b. 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/BX5UA2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2af3792fb72d4841664b5c206a629c83aa94b8148b2740b99dd301401b54d8. 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/BKM2L2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adcf19230b3106f37d348e0d544d49c953ef055be5e9c119fe16b239abf2163. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXBGP2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc477ac422cd8a9baff3815898fb7d12b2e5e5028228ac77b9672cb8ddd6e88d1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX5UA2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e2a44b46030e293eb013f495c31071ebe05155289f04b6472cb1d6b40bd55b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXBGP2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e767e4f538591c4ad0b3d145cd50db5178d243a901432ff4ca78bc8b05b6c5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BX5UA2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22908861d9e78fab91a188a8fa4af75001a9e068bef8bca043280bafe960e757. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BX5UA2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb49fb7d9fc105cb86d9c54ae0fa170e4efe1520541771c72cdf0f79d3a052d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKM2L2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2af3792fb72d4841664b5c206a629c83aa94b8148b2740b99dd301401b54d8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKM2L2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0dd74d104a6514cae16b61a0d42bc73074ba17cab470c43f27c453c7c9789a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX6Y62300052.