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 0x6d933bb14d3f6f020f4e8a22463ab5c928c06592c7ea8d8774a819bccf4b5c7e. 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/2d14dd59-5468-4788-8ed1-9e5b52ef4e1e.json and https://artists.proofprofile.net/proofs/artist/2d14dd59-5468-4788-8ed1-9e5b52ef4e1e.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 0x782e56c2191cfc17bce2f0d6df97272dfba9b34d0f8c70669fc7b1b560a7483a. 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/IL4070900595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0997caced00d2b583ee60b9480175e168efc7d36b6fc2bcb6dd6766aa8b02b9b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/IL4070900444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6317c7f139f8b09af650ae0478e9902091b0424e7b37fa73d01d269b77d4a6a. 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/IL4070900599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343d632c7c86bb63e0eb6002d848b9354413a46fec4b31682443f8bfc1ae125d. 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/IL4070900601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3dc71e0ec3c349ab42f86b42f83125159551ed4211c32c1165a4958f9736aa. 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/IL4070900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0372b79ef6f6ddbb3c63a837c652f02dc65176259191e5d6fcd519258770d62c. 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/IL4070900603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9223277f34d45e1e6ec8f8bc759c343e36e018037ae7e29654a3b20a3ba6b353. 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/IL4191005148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a870b47e8c2e392dc9cb64a7c154d6ff9607a6bb08061e791dc9bcb25df62f. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/IL4191000431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282322529220a7b32f206721efac278dec79fc16d80bf5e6d7369fde522a021f. 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/IL4191000432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98db4396eee80cfff7f7e1191fe71074930c1a2f43236f98c25f5737d7215450. 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/IL4191000433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8313b2d92b7a237c35b82f484b178b6a2f8c8b4196b4002f7cda00cfd9e96319. 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/IL4191000435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4eb86af83dfaa2e75985d1884b852fe1a46d4d77a6f23c6020c76b9cb1ce85. 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/IL4191000438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cd0fd021acfd0338682fd4f961c7cfb39733ff443b51b5a405a0e29a256a6c. 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/IL4191000439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55dcdcbfe4604c432454e799fe1d026c43965c5a761c1e084a9bc1307ec1803. 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/IL4191000440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf466ff26d3403c1307ea9a303e114427b5ce99b3f5e7f74c7bedf3dc8634afcd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IL4191000441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aad56f2ea0600589200049b98766dc0814a96eac1189d552076af24e6b0ba9e. 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/IL4191000442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d12f3cd8e4a655b103eb92a1e2109d525b820e97cbe6ae1dfbf0893e4fbd01. 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/IL4070901034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffd83d9ffcce190fdb8756be68b17de4e9d0b912925fdecb1103a1205acc556. 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/IL4070901035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04282871c00c1cecf31b5a0b4174d3619a71d07c3754abc4f91b5e0b981cfd37. 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/IL4070901036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29b348186c0c7ab43bd6327205159d2ae1afabdfa1962a4b69f91db2f6b57d9. 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/IL4070901037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb260f80d77f7e875fcdf21718afc09f1754925906fb23cb52260fb101ea441. 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/IL4070901038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6085e4b9edd251ab9f6923008d0281fb5f4750fb5d959499b8e727111852331. 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/IL4070901039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d93a959a8e18e70484b177bc61b7af681adc52bd59113900de04b1011116d86. 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/IL4070901040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e26f8d121c5137ace68186931343afe07ebb3e61e53c22fd1adb1187152b9d. 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/IL4070901041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbfd77d67d226f09016287e8fdfbed9d346807e50ab490fd99ca6bfc5a2e144. 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/IL4070901042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4653850e31c100ce3614504213359adbbd2375d8889ff570858778600db913. 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/IL4070901043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07212a3fbfc906a8b0bc000c924ce30cbb64eb304941bfa82b2df0e432ed74b. 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/IL4070901874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4eb86af83dfaa2e75985d1884b852fe1a46d4d77a6f23c6020c76b9cb1ce85. 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/IL4191000438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687c3f6e394ddb38d4e4c6a124ef9a63c015fb1d2de5b15a1beb27e047a479af. 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/IL4191005103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0372b79ef6f6ddbb3c63a837c652f02dc65176259191e5d6fcd519258770d62c. 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/IL4070900603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2334641dfbb783179faecffe9efa78878ae431420435ecfe47f5403785d946e4. 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/IL4191005109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98db4396eee80cfff7f7e1191fe71074930c1a2f43236f98c25f5737d7215450. 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/IL4191000433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e20f87d64e8df6b75841ea6a79597e1f76b1e816304375c43d7fbb7781709db. 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/IL4191004705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e26f8d121c5137ace68186931343afe07ebb3e61e53c22fd1adb1187152b9d. 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/IL4070901041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d12f3cd8e4a655b103eb92a1e2109d525b820e97cbe6ae1dfbf0893e4fbd01. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/IL4070901034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343d632c7c86bb63e0eb6002d848b9354413a46fec4b31682443f8bfc1ae125d. 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/IL4070900601.