1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x834eb94a397376e84a813f747fec1e09e7dca73620657fa3189c3b393d26427c. 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/3aa0c462-6e6d-4fdc-8eea-ea77827a3628.json and https://artists.proofprofile.net/proofs/artist/3aa0c462-6e6d-4fdc-8eea-ea77827a3628.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 → block OTSBitcoinBlock must exist at that height 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 0x41ca20a370248e05eb991f4f5f2b8614d8c0c5af4a261d5f0cbcedccee50e51f. 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/ITE911776002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda33d8f0a34aa5c839a337500bf69e462fb3af83f41d5971f24726a355fcc6ae. 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/QZ93L1969252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6e05dd2c6f58a8be4bfcd121b205383a6db3c89fa0c7e04f8d1fb58824d285. 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/QZ93L1969224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa209138d9494f3331830c66be871f98fff5d9c63f25f77066d03800137660fdd. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZ93L1969225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d27c22a11ba94a6077c0a56ffec6972420220b6eabf663e7d6e115967117b89. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZ93L1969227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4599cdba234f71b85c2e9af3b05ea8e43db3cc5e041aeb2a1bbcf38df95ce8aa. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZ93L1969229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d4935c46d9bb4b0b51ee45126fcc56d9eae9ea73efa7256545ddb544e6ce8a. 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/QZ93L2003339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217913df9bc6bd91d49a7d091d25b6c7fb184b6d00d3d053e283242ec066f71f. 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/FRX762001686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dfaa9e208c306e5963c29cccdd155e3b80217b3a99f78dab91153d80a7a46d. 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/FRX762001687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5b6932fe37bed919aa1c9e8de6fe314ccc34f8b2ce47eb0a98af0f8af32b68. 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/FRX762001688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6541026f416b31d9cb49e5732daf0c27cc508e2eb58b9f8a13f5f15db0a64c0c. 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/FRX762001689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a5b8bee1dcba0363d770e7f4506d86db620360ddf9a26bbdf9b969ee3e3e09. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX762001692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35765e8a2de799b102177f3d34627a0b45cbbb07f8ecd56fa0a535d2370e62b1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/FRX202152750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e88f6dd39e9a9e79933678867f621b3b263b4a88f47bc47d264cfc0444b1e1c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:43:29Z), 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/FRX202174279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13422eeefc0742d82b1c8efe0d245687f8aff399cfcca5a15080c18b02a40c38. 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/FRX202174280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a948972fc162a74aed189c88333df2abee3ea368a5b85ebf2b1be77f83d33f. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/FRX202174281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12ae7c12dd13bd10313eba15aef733dc50c03574446e79eba5d116c796394cb. 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/FR2X42277154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996f1715803d30eeff65f0f335a453a82a49bebb00005850c534428b55f769ba. 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/FR96X2358789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f89e3e9cca18e9e8d319ac9f698c5ab440c65281399e6c2a37d4da924704fd. 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/DGA052367576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ada56c642d1fe97b058f965b78c4253a348335409b6e96c8696bbc6514911ee. 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/FR59R2455572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0daac4afd8c9de496c81c56fcc924e7ff5ce6df9f18fe5e0aeaaf98785b26d. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FR59R2455573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7657ee660f95ca51618463b8d98bf496289368c8e7274f941c407d490e98a42. 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/DGA0H2401014.