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 0xe61a1822c98fd8c49378ea1d99ebc78fa632e222b02abee108992e26e27c9f86. 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/5a1c0581-4235-4cc3-9e76-8270fd326a73.json and https://artists.proofprofile.net/proofs/artist/5a1c0581-4235-4cc3-9e76-8270fd326a73.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 0x403cc00f481e4b945d1077b7217c4b7301899c72f0337aab3e05aa6379c1d086. 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/QM42K2195391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5cec609746600122a425856940cfa3fe4bd212f930c5be79da05258200bcc4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZKDK2130093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225b8ead5fe887d0d54ef6dea4d90f1716fe6082322b82dc6dbc51c86eca07e2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM42K2134887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5803751a6dd694c263fb2e70f1465dd82e25b32122fba609a14fb06924c40bf0. 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/RUAGT2403535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1b6e2b6658c31ff7035db8e54173953492de7bc6679d5a3924917da0eac98f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/RUA1D2490406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156873557ebace2ab5d0c622b7be5edab4a78369833176efae209c76f9b30ee0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/RUAGT2332204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240c41f9b9174c9548455c12f706b1d07de62b1a3d6e3ac78fd164d52829d887. 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/RUAGT2304163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa613addc4ea355b229d7d44ff32851ea2a844078dfa62ac4604086dd766365c2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AEA2Z2320031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c1f9ff73e75ac0873e68b54f2e8f7e834fb008b00e57596252d946c7a428fc. 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/CH6542323094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6595133b8a2ce7f1fac7c45b05211447322a54147369d69f6d4891e5afb9bece. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZKUS2300859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01666b14c15ede8dbb155ed33e9218648be71e43df630a52ce2d0c27e741dcd5. 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/GBKQU1901568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7aa6eefc1e48100c429f3096706bd44cb055dfa43e09ec393b4278a1e76840. 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/GBKQU1901566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cd453459569656249dd0a643d9cdc0622c59a6c8107961d76425d8ab681fe4. 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/GBKQU1901567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c8c7bcee138801bafa3b8ac94dc9419c65dc6e6c6f3b9c54c84844e81f4a58. 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/QZKUS2212140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab5dd7e676c8a68e072339e7404aef37d830fc55a46e6c6395f643018d9ee3d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZKUS2211709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb43dd61a06ed5a56c40c87bbd82dbe6164896d4769dabbe04ba971c9616a723. 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/QZFP52181211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875cc10074207cb074d1f623e3fa8d07df200076e24a475aea98f18ec0754fb4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZTH92204259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaff820b10a6761bac94d5f34bbc265c3ec536423b5b816016b5a2fa93141fb. 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/QZTH82125970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf907c385c8b6825f408dbd43b1d528302fb1b98a596929f5394a76bdd502a05. 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/QZS672171307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb804e7c49297ffa7fb2b75873429009971320e774fdae52a32c4c4d72f739aa1. 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/QZT852142111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0797d94a3f9b11b5814a4cbde136f73d3ad391faf5c7a145e66d5d4dcbce796c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHZD2167193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ce7329e0981a81a04ab889ff41b361e5b64f6e3c159c36163c1d7b15aab415. 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/QZHZD2137482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fc307627eea0e94549f77d2fd5ff8c1bc4087cf68ce18f2b91a4a11fec4c9a. 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/QM5LC2100323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e218076c1f0179fb5e6823eb7886a53d598f2b80a4df35069147b4aa0cf1d18. 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/QZMHK2049786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0b1898a68a38527129e5139a2dd465cf47050cd317f8cc4fde34e19df92d53. 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/QZMHN2008541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc56c9df82cd87d378a671f48cd92e22a67483d2eae451289d14ff044b385311. 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/QZMHM2060221.