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 0x824fe2c6037f6a766956b3fbfa55e6ff336160462ef10eb0516be5797aa84724. 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/1b590356-8f25-4e9a-9372-5e1345f5e449.json and https://artists.proofprofile.net/proofs/artist/1b590356-8f25-4e9a-9372-5e1345f5e449.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 0xa3f58ddeb68d251846b648af01beb1eb417cddc5e073da208cafc44297f251a9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM42K2052134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda06350a291bff0007c771bac8bc06729417126fb0bcd33bfb32e39366f779d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM42K2015178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3138bf426bcff251de4af1851bed672d32c41b4b95d0afbf7749c3794f99b36d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM42K2090141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4b824ef9d1f02188005c324b9e4f7f4dada249a87a962eeb086e476eedff34. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QM42K2039270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20575933173ee374ee4c3a22a136b87f2a5c311035abe48092371895cd3d60dc. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:11:13Z), 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/QZMHM2003419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e296616ccd2e166a24bcb0e2f86b1a681ddfae5277943f5af6d52a2088e5082. 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/QM42K2069288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc286afcb82cbaa4ab1edc62f6dfeb8ac10e94d9ff00ac35fef6ff03adc2a2ba2. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:46:41Z), 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/QM42K2076294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f7b044d562b9e34224f0cb14b7e9ebe251126a4adc696eee16cb7089861e5a. 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/QZNWU2221490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb6c9b1a6c8eccb77441f647b2af950ad64a81b5d5daa7eb4dd3c151ad7523e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZPLR2218305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9a039a81e200211eb9aaf0ca18df20c7a6db2dabc7530440e093617a7568b5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZRP42287460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fc85a78d32170e25dbe4b102e96025311b85fe5b2deb75fc601752b5f758b0. 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/QZRP42287461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7ce9d6b24ad103b0c0af3cc421923a6daf7c1f78f4121a15c66c5c6aeb0b38. 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/QZRP42287462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37479650a025c0eba9e6bb4a8f8e59872298e97d5ac72e5774839d86d24bc54c. 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/QZRP42287463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f398eea9da817cbbc3520e154f5df4c303945c4b753442abf07de421c6e21c4. 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/QZRP42287464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb6c9b1a6c8eccb77441f647b2af950ad64a81b5d5daa7eb4dd3c151ad7523e. 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/QZPLR2218305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4122201deb5d02ef310f2af6283c738263123d527d6caa4bac89019d46825b90. 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/QZRP42287465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccb007907b9db1440980804fc050959cfaaa968b92bdbd37381f57a5f0f9d2d. 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/QZRP42287466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faf883b3c35e5a43e725c152a15bfb57f3ee2693e76bbd9e5b0f3773d6b7e91. 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/QZRP42287467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed94f336d01d3e42dff277c2da58d0b1e6bf2a3868c3f689dc23a099d6be4a4. 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/QZRP42287468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f7b044d562b9e34224f0cb14b7e9ebe251126a4adc696eee16cb7089861e5a. 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/QZNWU2221490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf8b58cdedb09bae2de463203ea420d3799de2fe239cfe306dbaaacf44482f3. 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/QZRP42287469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7015a51ae17a2036986379f9b2103accfbf3c84f7c3a128a475fda5fa26d0d01. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZRP42287470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fc85a78d32170e25dbe4b102e96025311b85fe5b2deb75fc601752b5f758b0. 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/QZRP42287461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccb007907b9db1440980804fc050959cfaaa968b92bdbd37381f57a5f0f9d2d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZRP42287466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f7b044d562b9e34224f0cb14b7e9ebe251126a4adc696eee16cb7089861e5a. 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/QZNWU2221490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf8b58cdedb09bae2de463203ea420d3799de2fe239cfe306dbaaacf44482f3. 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/QZRP42287469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed20d39a8126daf4497785c5e23568fc693526497052dc0c0e84169a84831c8c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:39Z), 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/QZDA72392602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47071773e94a3ff87cf4b8da6b6347c76bcaee351ac08efa397ddf2ceed155d6. 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/QZHN32517500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616e42d8ef609d4b5e49cf4c5d3c6fa14fa7e8ecda5accbaaa40bd71876fb855. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/AEA182400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d0258506ea30b0c19592dbb3ba2dc471449e68ed539aa1520339b9a70f89bf. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/AEA182500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbb09efeb422fce972b38cf65bd0dd6945b168e129e5187692cdb315554a89c. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QMDA72543791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e42c2aa6dd9cdf53fc3de0b29805e3fb73f1745d8f64b0fe7a5a546b052b697. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:30:47Z), 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/QMDA72543819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5b95bff6c743bbbfe760846877ee0969c717cae38aa3ca46c8cc475691fee0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMDA72543792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21958cb6fc3929223cd222f12ada24ceafd32704200224373c35d0b16d8571dd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMDA72543793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478649a9c6bd75531a6db61c32cb2d7d473b9a8be43d549a6265f1b5526044a3. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QMDA72543817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4d340ff361c4649675c301b7052901a74e4771ef2fe2813a509fa97efaf1fc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:41:54Z), 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/QMDA72543818.