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 0x00cbd9025a52f78bcea9531a970b5899d636c0c78b317fd73f154790fdb66779. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d03df1d-3fdc-4bda-a350-eff440e86c77.json and https://artists.proofprofile.net/proofs/artist/7d03df1d-3fdc-4bda-a350-eff440e86c77.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 0x10a897cddb29cfae64a173e27122b1234e79350dff4f230190521075fbe882be. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/HKG291300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b53b26cf29070208e64dc8ef6412d7c9a3b7bb210ab146c8bb6a6bb10baf1de. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/HKG291300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f17680395b7b95a1c1b1f7854cb528d946fc64644840fea3e3f826bbbd48c4. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/HKG291300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9c52e4d7ac5ad231e245f1b2e0470301f50f039a17df99629a5980fafc619c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/HKG291300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa83cec7025e55d6febd567f804386e78fb627678a960d02eecad6deec794587. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/PLUM71800117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e725932b4e941309eb9fea3a99f549019d56879481114af2b8640970770201. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/PLUM71700219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ad5d742e7ed34f7ae887ebac524f687e42a34b4e98a4d9c7cefc6e4fdc8606. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/PLUM71800116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f0730bc4a2f4930883467a854cf021a17005f08e613a41a6929d4e4f0e61f7. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:05:46Z), 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/PLUM71800115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50401519711fe4c5b693027f8ed00ef5c2fa76bdb8761a69a79f5640691357e8. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/PLUM72000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a366e76204d8416b18e737d48497a6ae50c9d4c5103b06370ef94efe0ce4393. 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/PLUM72000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e558d6b8c5fbed77e03318588556a87da03f469ba7791ce5845dfe37483d36. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/PLUM72000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96f4a6cfbf3d019ae3dcfed5eea08d7ddb720a57c4ce8035d4c8f3a32c8c317. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/PLUM72000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca70186c8588a6f1acd2b8ed7e30ce5950763cd66001e579e2b2f230cf90e41. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/PLUM72000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775fe2371dbf5b9c9ce64b224d0ffe17f9a4e4b903d0c6ae4c858ded496a5066. 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/PLUM72000131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f754a043eec3f153a3c0739788a9315dae8e4e1f1c106c85f40ad791911273. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/PLUM72300270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0f090f12465b7ebb961090252c03c0c0bbff6b01c6615fc7859414f5943678. 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/PLUM72300336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c06b20b30df4d2684c912e8f6c056456f40fed35d7240c511537b56ff472cc. 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/PLUM72300414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17960d0a46557016b182e458203b95033f84b9187b16dd71eabeba3be021e8a0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PLUM72300542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b992aa7d8cfd81777694200e82dd8cd297f4c487bd88a1293789d87a18df822. 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/PLUM72400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b671fdfec8014a36cc42f163a1d91f2a946a4f26ad6227e9a0966528c50a1a. 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/PLUM72300538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176d267226afce52eb68270fffee255fd1311c0330f1517a1d6d6f4a0f2271bd. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/PLUM72300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffc2dfa687d745ea8572a5467b4b7cb5c1574365335a3a23f9bbca78218963a. 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/PLUM72300541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17960d0a46557016b182e458203b95033f84b9187b16dd71eabeba3be021e8a0. 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/PLUM72300542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b734d61e8b7e4da3b3d57227df82e32d94e371c27d4122816ccf899b0c13675. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PLUM72500324.