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 0xc729af15729eff5eef950e6e84fbde6665945322c31bf48ec35088353ae98993. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0876318c-d05f-4097-ad91-e7441328bc8d.json and https://artists.proofprofile.net/proofs/artist/0876318c-d05f-4097-ad91-e7441328bc8d.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 0xdf3c922bf5a03fe8acb990d278de58c8b09ebf913dccf30b7ab64f3854c8fa54. 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/JP92N2406793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ccf0ecb919c45962a169a6fa345516362ca4342c8943116cc4d73c0ae2dd62. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JP92N2408156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176ea6352e2301dc1df246c21a06157197a9bf05a964549c2b4523c50f2a5d42. 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/JP92N2418049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ec92b68d4688773d2347d335765e669eb9a233fae8d8555f7b4d314f3be6ea. 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/JP92N2429108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c9d3e2c6b5482d836e56859648e49fa55fca076a51d0ed1ddfd7f44308b790. 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/JP92N2410803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4af36f356e553bb746e08855421f4045acce55680facaa714626bd43176e4f. 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/JP92N2406789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa823e618c44011d05226c5d4db537c63d18f815a36a71423c6f91ea8f04d1149. 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/JP92N2433435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce79dfb6255903159ad63c701556def2778f964a2bab6d3ff800c2d1d44737b. 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/JP92N2429297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5413fb6e9c046a5672f3965fc0aa646a8e6fa44bec40367cc2b7c9a15c4583. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JP92N2407839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a9fbfbccea005020c740874382853ddcc36b0ebea3a41ed36b064ce5d35334. 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/JP92N2407840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11051883edc2b53bd2f81309a5026b84a93d2dca3691db41d9526b832dc2779. 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/JP92N2407842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb666260edced34add4cfcff1731687d390ccf069fe2e309f45cbd1dd66c43e74. 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/JP92N2407843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12b6e299c31fda33cf568d88c4c5d22bfa20316763e731e923c79b772e965ca. 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/JP92N2407844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc334d0b0b2c3f5108e401594f120223f787f2ebd8b406f5de410c6663adc10ff. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JP92N2407846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3d921ba6624fa13b56dfbd44eca99bea5717b6fe74191944ed437e8f250222. 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/JP92N2407847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1d6faf9224c19ee7bbf455aa9f7dfc7b1166ad9b70fa9ecec81804101e4369. 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/JP92N2407848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3570d38964f02be6a5d3dc11c91bc072635ae0747ef83f19c61ef6c86060a28e. 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/JP92N2407849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79b8fc68bbba301089a4fc50d9d95f668bc62a6a9aa525e3674370ecacca833. 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/JP92N2407851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aaffeb17b7c02d588c6f36c4cf6d4070a0666df01f76b3cf5e7303d5278a606. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JP92N2407854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e832babf26e5231b89623cca32bb424f03e50c65fd89d895330f6c31e37641. 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/JP92N2407855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400d141668c693cee278e5e7321db8e2914aaaa60197729913db4fd49531f4a7. 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/JP92N2407859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56e27d3102c019c81eb53cfdf2d9ba0fa6c6d4245b926fab1200ed6a694172a. 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/JP92N2407860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e3afa147486a54a395275600a9b29444dd666bd944805a1a090afc12968798. 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/JP92N2407861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d541be4f4d56a4d00cb658219f775373372be6f853cfed74d984e4a155ed1f8. 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/JP92N2407862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6310e178c7a7788a973493855b6215e7b9c60213b85b83117567223bc818a9b. 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/JP92N2407863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb355abe4b51135b51e8d2bee40d6961a943f06b15cec6b7c29a4fb26c231630. 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/JP92N2508059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f31ad5aac8270c584016f234eee9aa77f8c5b2f33ddbd38330718330d3f8046. 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/JP92N2508052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa823e618c44011d05226c5d4db537c63d18f815a36a71423c6f91ea8f04d1149. 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/JP92N2433435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce79dfb6255903159ad63c701556def2778f964a2bab6d3ff800c2d1d44737b. 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/JP92N2429297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ec92b68d4688773d2347d335765e669eb9a233fae8d8555f7b4d314f3be6ea. 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/JP92N2429108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176ea6352e2301dc1df246c21a06157197a9bf05a964549c2b4523c50f2a5d42. 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/JP92N2418049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c9d3e2c6b5482d836e56859648e49fa55fca076a51d0ed1ddfd7f44308b790. 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/JP92N2410803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ccf0ecb919c45962a169a6fa345516362ca4342c8943116cc4d73c0ae2dd62. 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/JP92N2408156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3c922bf5a03fe8acb990d278de58c8b09ebf913dccf30b7ab64f3854c8fa54. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JP92N2406793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4af36f356e553bb746e08855421f4045acce55680facaa714626bd43176e4f. 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/JP92N2406789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12be2db29c55b6bd68ad7164ec0d555bd6ead9a34fd3f11875115c5f6231d7e8. 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/JP92N2520618.