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 0x9cc53fab98d9f0be511757f6c85b49068312e4d6184b981ff530ff49e475d177. 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/516707c5-4c52-4a4b-acc6-7f5408b711cb.json and https://artists.proofprofile.net/proofs/artist/516707c5-4c52-4a4b-acc6-7f5408b711cb.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 0xf54e99607f3c6fc2c8608ba8fb95a9a25ed3da93449eb4ddbcbde27b78edbf14. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHZ61911117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d66ccb49aee902231bf92a196760b9b44f76c13919c351a40b8cf2b210c737. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZGLM2072206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e5886b980181a1945b6f3ab990020db2b02548ae129077c66af7319312f2ec. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZNJY2039621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2bd044bbebc216070a69d8c1dc0b8a2dc736fa68f540a2c53ed0854b02163e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:56:55Z), 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/QZHZ42157404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2bd044bbebc216070a69d8c1dc0b8a2dc736fa68f540a2c53ed0854b02163e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZHZ42157404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993ced82f31a08da1fb9eb2a12d094e5c77be9597f14e60db2b660a4fa6b5aeb. 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/QZHZ62181200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993ced82f31a08da1fb9eb2a12d094e5c77be9597f14e60db2b660a4fa6b5aeb. 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/QZHZ62181200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca1627f61b637c40fa9d5abe52bb46939e7d21e67fad766c8c40566e8fe35f8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNJY2114709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a6dac60596f9aa6d61352ecd6469bd4cb5576df5b1157ff68b2a7b063fc78. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZGLM2233780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5896b29ab69b5753f9488bce7e16f01e36017d02109fb4f872b540d2272d334. 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/QZGLS2245741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ebf938828a45f0e107e42118987b5300d083dcc9e36371bd89b8976ee9f699. 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/QZHZ32272133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa1ba053b4f9c9e2467c245d45d7980cdf00e50fe0076f86fbb7f7b1811ca4d. 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/QZHZ42284052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5de94965f2f9d9407dd8f17ea9dee0b5fd6979d3ed5dad935be2aeec99b8b3. 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/QZHZ42272675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724a1ac783f21f4ff513df7f216d6e7783e426c7c66c2e4fde2441154ee6e1e4. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:08Z), 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/QZHZ52220034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec529384f605bed414e8f344594247d4ba4f55ce0651ddd85c2cc43747061e05. 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/QZHZ52268856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b5f829ec4fc427f7583113cf771bbb7cd541b73b2398d093c6b81af9182d94. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZMZ92297136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9c0c7c83cdbe042e2d2c7c32b6987b6ec18ce1f849737bd95ce36e8f1b1218. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNJZ2293684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe20415a6d7f1ad746d1654bfb7af3529bebcd0c4dc2a4fd715b262602d40d75. 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/QZTPX2206668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee4fc880c94007a1f9a8ca8042560c34fda90d3f7fc1f21320ff0ddc0f291d1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:22:35Z), 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/QZTPX2236569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933f484ec3ebdb4a3f26cab066f3e928ad5c4cdf5b64f027cf89133732bfe93f. 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/QZW9M2217838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933f484ec3ebdb4a3f26cab066f3e928ad5c4cdf5b64f027cf89133732bfe93f. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZW9M2217838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734028738b1e6fa6993749c556026a990877bea770e1e0bc56589e018ad65380. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZW9M2244490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4eb4db60639692b6ceefb8e0e664442c998ffdc6652871dced26484f3a67ec. 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/US7VG2307916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cb461f2adbdd52ef8a9d791ef45ecff4d635ad3a8710ce196069cb84f71edd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:24:23Z), 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/QZGLM2364352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07a7716f6bb214978975cef7f5d2d1497c1bdda80e962b4bd276796c3e13cd5. 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/QZGLS2375938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2034839f76eb5fe7b2b85a78d89045988423c22faf968038733fa36ad9a1dc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJV2358096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44ece95adc2f446b28c3a812d5bef3ccf8941ed0d8eb6ccc59bfe56b02b8d6f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZW9L2348501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44ece95adc2f446b28c3a812d5bef3ccf8941ed0d8eb6ccc59bfe56b02b8d6f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZW9L2348501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9039954eeebb77cd2f4c9e3fe2f82ef3f146a2ac39fb4906317f91a3201dac. 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/US7VG2409844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9039954eeebb77cd2f4c9e3fe2f82ef3f146a2ac39fb4906317f91a3201dac. 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/US7VG2409844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ef00488ff6027a034465b6ddabe536c4cefed33d80504a55f18dcea43c34f4. 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/US7VG2409133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ef00488ff6027a034465b6ddabe536c4cefed33d80504a55f18dcea43c34f4. 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/US7VG2409133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf374bb6247e4c8026607dbf7d8400a3bc9d5aedb83538e6056a7eb6a89ea5132. 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/QZNJW2460324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf374bb6247e4c8026607dbf7d8400a3bc9d5aedb83538e6056a7eb6a89ea5132. 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/QZNJW2460324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67e896acd43c7344116e8825fd35ac68117b1cb4b32ea75eedb290f474ead86. 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/GXESV2437253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f5c960c18c52b138db0ba0e1dbbb0f89388ac192acc22b2e8cf5db789b697a. 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/QT3FD2529137.