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 0x387493de1c9002bf1e59bab33793fffa797ca0f3937586189af1fe6a414c231e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/629bd8d2-7093-4949-a2c6-333baedd2043.json and https://artists.proofprofile.net/proofs/artist/629bd8d2-7093-4949-a2c6-333baedd2043.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 0x3b94bcdcd7c1248f6685efaf6e6cef56fcd2f441ead62de019208d9db39a204f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/PYC692000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c173975207e2531c31533cfef4dacb0cb0d1e4fefe4825202411edd4030be68. 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/PYC692000114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de40e31878d4b73a63030992cb963341f4d30c30528ab22d61922438c871d0d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:08:31Z), 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/PYC692100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a6180b61b70394a449036659496881061bcdd5f4773a3d652e46b568067370. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/PYC692100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51166c600e205f40c1a990493bb3ae39b312d69fded49775478a99b32ebf4ac2. 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/PYC692100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c203660674d2d7d36f02fb7e6828788a057f41d67a94510d0d1063e100e9f5. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/PYC692100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec84143ad5a2da212b0b4a3803ddf885df46559c4829b3c953b71d39068ccd3. 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/PYC692000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50226c78327f5eb6d1211bd6f5e3c447f919e572806aa7eae2be136db4618fa. 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/PYC692100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01912c6e2802e08d344d647166f55c692735ce3629d2aed3aeef10c553a80dfb. 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/PYC692000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed48a7d11beb3291a5f7eea294f148eb3c5212dbf2865c3ebb94ce419844a32b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:27:48Z), 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/PYC692000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20558ca27ed468de5841889c83388c8b6801cef4a211e5206c22e3e402ed5380. 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/PYC692000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a076328105c0b790aa9df34c55881cee08da783217473aa403110aca756e2f1. 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/PYC692100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b2e74c9c2b4bd319a9ef367fa65e87e2dc64f6191064bc5d89a5fcd722e528. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/PYC692100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1fa1842be83f08d713baeb1579a0c89abcec60fee38dcd9cbc0cfeb56c93d5. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/PYC692100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adca0a0dcd77622130ca53e190ac5559d17ce4aba8443fac031848a27b1fc79. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:40:01Z), 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/PYC692000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29de605c37d203c32c82a81cfa93f846f0e3cc238112ab15e1333a5c3d317583. 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/PYC692100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b56a4b19e6627249c905c68c89afec69aaf90dd54402d425265f6cafaeb346. 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/PYC692100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8594825f9ccf625206caa0425080ab2f2b708ad11724a6fd05f74c2ab0bd5d8. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/PYC692100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c183fbc6d9611f1a19252559722ed43ae634b34848440500924a12de26943c. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:25:43Z), 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/PYC692100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b15533cc1223d24cc0023dafe829f4c9e0f97e7af1547559031c2b3f71f353. 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/PYC692000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9660b86d1aa55ada3783d7ed76d6b9c693974d2262f4c621fb03e79be0e0562. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/PYC692100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4481a578057b9795ae1e25ac18daea9979493f32d56fefa38daaf599c4b34603. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/PYC692000146.