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 0xbc0ba78b274cf48b720072c026b608cf5c1b08c229bf36a6c800a079a94218eb. 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/0a094bb4-99d5-4a76-b379-a08d64d1140c.json and https://artists.proofprofile.net/proofs/artist/0a094bb4-99d5-4a76-b379-a08d64d1140c.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 0x468cdd80365bacc35053036a6661b913c48a0af8b085463716fa1cf43f03b2a5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN52241004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14302fd30dfe645a4778c224f246c16da8dbcc0f9a24f844aad276271e558ff9. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZK6Q2201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c01da33bf3592bc57697a96186d9bf90858c9f5543ebb471082fdf2a15f857d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:17:41Z), 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/QZES92376100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66d9a294c7739bc7bb26aa81130651f10aefb6980ed03094ac83f817303569a. 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/QM42K2325655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a5ec5e336de02df600a9a6734b6438a30a5f3120d05cc65bddd44c25dfbd3c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZS662485584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe440cc399d7cdae00e0eb5d72168c2e45821c93a8fc53f5b87f4d7f32dc69583. 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/QZFZ62542557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd435e69bdb23a1ae6c7d0430f49b76562f4d51b17d81006ff3ec9bcc7f2fea8c. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZFZ62542558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3a9fbf10108ee7677b467fab0d725f5161bbdb9604bc4492d8a205a8a401c3. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZFZ62542559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6784e4043209d0dc4a349d78de0cd20e2946599a2fd789d495cdfcffc3dd41f6. 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/QZFZ62542562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb497961123971e5d39e5fee39b56aec13d359c6b7c54f8eadbeb638b6903359d. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZFZ62542563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20448448215c396580a07f75942a98a5345de8682f96410f8603752fc7a40ff6. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZFZ62542564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a5ec5e336de02df600a9a6734b6438a30a5f3120d05cc65bddd44c25dfbd3c. 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/QZS662485584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862121ae856377afda5fab42d860236bebd95f2097322891c562f6993a83e0e0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ62542566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6d0c991018213464e77f1d71c064eb3ee377c4f73fda255e2eab8f91716b12. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZFZ62542567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041be1f4ff7ab239ea6929dd1dac25294220a4dd294d5b04595f32cf5e14bcee. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ62542569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c13d1aac4d0501adc9192a74f5f2f9fd09204ef4db327008b4a01c38c9c7bc0. 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/QZFZ62542570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b41c0e715764908babf91dc7301b87012732eefb7547c8adf40e7b90be83b82. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZFZ62542571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f57f16108184f958736eb3de73bc74f47560a3855690e25b10313a55c9fb0aa. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/QZFZ62542573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbcb82e8352b9a57b308ea49fbd48853736cc63956fe37805c28bddd75e7ea1. 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/QZFZ62542575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121bc68f6a5b90bffe7a47b260489f7b062cf37faf966376f5226fb25ffb4bbf. 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/QZFZ62542576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468cdd80365bacc35053036a6661b913c48a0af8b085463716fa1cf43f03b2a5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZHN52241004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4133abe0211574a8c5a3837e881f365cfcc80bd7bd9dc9811a7d775321c28f2a. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZFZ62542579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a44a369c899e55696c1b6737d1c0dad27b1e79f39bb79fbaaa956209ca6fbd2. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZFZ62542580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8f50cbfb013af594e263ece91afbc06814e1f082f28183f84fa87f7b1eaa7c. 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/QZFZ62542583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f39c65ba77e293946cda243423da831e02d10f47f23893d7f87f39fab61295c. 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/QZTAX2384784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d53b330b1904bd98740123c99af03966bfdfdf98346d10b7b6b57e03c39186b. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZTAT2294865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c058016ff5ef6d06e410d0bb6b8bea3b837407be7cf0667a437fa6766ecefe. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZFZ62542584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f18e5690bcbe1c7f81ccf2006ec6cdc059ba3538fa7374610ff8ce5f33bcb1. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZHN32586206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9776dbf14633bfd02e3dbfa34c1d9c7e46ccc888a1d29ff1c1d62f57aeab29bb. 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/GBMJG2408770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9776dbf14633bfd02e3dbfa34c1d9c7e46ccc888a1d29ff1c1d62f57aeab29bb. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBMJG2408770.