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 0x77d230b9385b55e3fd94b180662d0a409acf4b805bdcdc4f081120f5bcd8812a. 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/d72c0ae6-ee58-471e-ab79-ee70c1b74715.json and https://artists.proofprofile.net/proofs/artist/d72c0ae6-ee58-471e-ab79-ee70c1b74715.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 0xddc08330dba70079d6ea2c466e81aa94449c7f5f6b89f68a2aec963f2fd30126. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCJPT2241533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99ea2ee6ef6436a354fc46712740c5edb16bfc4618215592fbdb0c80be7356e. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCJPT2241548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4b7da08995fb19b4a176304e65684a52b832ae745825ac185b251ca0e38700. 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/TCJPT2241577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c09d4fd7bd08c12070804a14603c2f4a92457ec2ec2a89e1ebed76ed4364a1a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:06:33Z), 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/TCJPW2331930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99e0fbd19940d4b1ae25a06c87408eea778de2463b5eebf9810af0dd531c267. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCJPX2356855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb816a48f6d3b4b556ca06dac690d5451ce753ac74618f2059c7023db12eb34. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPX2356857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54320109375bf54ca39839654cc3f43066e7eb26d08f50a4997f16ac91c6dd4. 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/TCJPX2356858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22275c74bb5be7271405a59081af2af80cf3556b8263d9fb74de66a49921bc7c. 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/TCJPX2356861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96947d1ba23565dc9567a0230c7b6ae07b243d332170e3e076d50da06010300f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:58:11Z), 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/TCJPX2356870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeceecb351d0f71d03b1c4f0fb4faea3a5105b08fc2a5cc70deeca4664c148840. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:03:58Z), 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/TCJPX2356872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a124ff068a5ab2c63cf8d3964e59b8b34908d4acb433bcd7743b0214e0707fe. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPX2356859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f7432c56ef9e3a22c2c913ae6ac56bc13403d0609de712a407bc95df09a7ab. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:32:56Z), 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/TCJPX2356875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96a58f54c672539a1fc5bd5e4453ca7f75deacc9e6484023d83fc60f4b53fb0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPY2304734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169db5213dcc2f7a29036563bbf65902d938438a71e25c6c4ac213ad2bad4b04. 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/TCJPY2345529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97da554ba6051f0f21c0f17df27fb012d42cea84ce0d67c7acfedae9920219f8. 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/TCJPZ2422109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49abda4d105674212eb19d1dde1c0bcb627b314d45e3daf72e9b2b1240ff0eda. 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/TCJPZ2474374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622198313940e71690abf909960b211ceb306a546d8cec7de30a9da55e6f3dde. 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/TCJPA2436142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f0b897a9add00bd16d2bb3853bd93a723c26aca1dc3f249d88067d9d608eb0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:30:09Z), 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/TCJPA2436146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a66b54d9bd624d2baee58b123b5b85d180f87f8dce416d3eb2d9f23f1971f0. 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/TCJPA2436147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235f216e1eee7eb0873346409b531a71bbff8d8045e11d9682cb9115a46bdc9d. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/TCJPB2473171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61c81bbbe9c417d37b0d7ee4fec59457006fc100d8d9e310b371ec1a400c766. 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/TCJPD2418618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef520fda89579c841c6b91aa53e6fefb3b9668ec06a252a303611ab397df1f10. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPD2418605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65670d4e224c1466ca7ed10b14df5e4ca38bc845ee0bb8de0386333059b7085. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:32:02Z), 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/TCJPF2538616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e80160395d703742a571898c125a7d18b90fff9f010c9d560149f11dd18752. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCJPH2552563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4d6a584a92e7db6f342fa9d8ca44af1ee7b1f2c0a3ba62b954e761e2bdc7c0. 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/TCJPH2552505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c488321294b1328f0e8988bccd70905b552725a6bb4193cb2b8748ade888d0. 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/TCJPK2536303.