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 0xd60fa994f1472862c11687d8739f0bb7b34419b7181b3b7017601027b36e6ec2. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4364bdf-9cbd-4b24-98d6-3e05cce56ded.json and https://artists.proofprofile.net/proofs/artist/b4364bdf-9cbd-4b24-98d6-3e05cce56ded.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 0x6d7cde363ef16b26cd5fc06466125b33adef3175d5ae85cb4ebcda386213dde4. 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/DEC680100655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ab15eec448a12053621598458d0ecc67d7cf9cf8dfd9e904cd399f6a1ce3ae. 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/DEC680100656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5ff16a87b2e0f078206829db539728985aa27efdb49d3d4a24de074ae2449c. 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/DEC680100659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74891a36b49d9125f82c7a1cd6b4f92bfd9b312b1cf18ad49f5798a87b436faa. 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/DEC680100661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda727066b1fd517632a3e200648de2836a7bf869907bfe42a44c234de5adcf2. 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/DEC680100662.
Für immer im Wahn - Roey Marquis II. remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e96a5bb1df8badad79dd7618b466cd132ace6a2e72dabbe3b96c2265ab835bf. 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/DEC680100664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68ac0f7f9793d3ae5c488f9742f622f8048769045b8966cd68dc39f6fb8cb6b. 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/DEC680100665.
Ihr müsst noch üben - Roey Marquis II. remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65c1c9797f39f49b56ec044e56a9833fd2f5f56251b27d0e3adee0a540c8745. 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/DEC680100673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6321ceba91942c1eef9620e306e99ea952c54ad78ed3ff80a4f2a2a752bfddcd. 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/DEC680100675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247c34e9ebd75adfcea0523b8fb81647881202b88d00aaa172dcd6d5c4281891. 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/DEAF71316050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abd05aa0748e481250fb5c721a4c5a33908928e0cba0517a750e84d64ceec5b. 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/DEAF71316053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c3807a2eef34e098c8e5f1e0ee21d7ad1e786bb60ad868ce6a9e1040b4ec18. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEAF71316055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceff3abfaf91a86a3e35c37c6cdda5f585572ac1c365b9e6b7604b870f437b39. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEAF71316049.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c5a84ce7539c4aadc109126786996804abf3b626f7e22e3d538649997d9979. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEAF71316052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47b4375ed17f0289a95b7a5c241358e6a499c5d5067eb7334f3a2d5eb426cc6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEAF71316057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefba9b2c926fdc25d496c01edfa218ab7e086059460c2c60baed1a15259d77c3. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEAF71316061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c39a052daf46d4c4cb40945fa9f666f56c46e263b4204f6181620eb05f9032. 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/DEAF71316065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d0b90c4e1961b4bf9538aeb16e9ebf27c0d3c509e714ddaec1d50f2c6a2cff. 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/DEAF71316066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303da77505a1a51826211e5da60f806af66cc3d57ed78499d9f22fcbc14524de. 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/DEAF71316070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1030b959fd88258f575248a7a9ff89ad99c8699302b9769aa857602ad5b395c2. 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/DEAF71316073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03af4117d6d8f06d18953d4ea482de80e2014a5343308e16d3b90763107973be. 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/DEAF71316074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23d79c27f39c18e70a34dae24539b2f4042413e86c13049751a6c145bbfbfae. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEAF71316067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c888f34ba2462034701a42695005d9296899ef37b130dee5d618dfb3698ad4. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEAF71316068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd703a9a0a23eb1fe54832195627274f069ef826667019262c84d934650802e58. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEAF71316069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c1962e3e0bbb9f46b99c0d01baeab6bb913ecbe7b52595a551287b5790eceb. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEAF71316071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c22ebf638799504cb3d398ee08792967dd6bd3806d1c59b017fb986d126dba. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEAF71316072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9e7bc2f0ee2ee902e66cb7186567a8b8991aac17096df34ade965dfde56bb1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEAF71316075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4c6d26ad18ca12eaee46aaca40815f612c394eca9504945ffd2bf1b877e2bb. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEAF71316076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726c2f95d72f678135db7b77c7c71e7baf035fc9a9ee37b8b09866ee099b7b6a. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEAF71316077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47176a1a3437f3afa56bac2a4fc841e412ef5129b9aedefb4119c5a1340e2071. 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/DEGC61000591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8821ce126fdbb0bb2a805b87adc6309f8b7c799ea7e63999119731d75fcb6561. 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/DEGC61000592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1632e40459dce2575dc8a9e3b900d419a462f0c9f1e436c1e127288680a86fe. 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/DEGC61000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd72f5bb5f7746cd5afd65ab7b8102225dcb9754acfcc6551d4c12037b1a41bf. 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/DEGC61000594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37899edcde9444fd81161c0bcc02037ed61dc7a9fbb7f25f9c9752ae59de364c. 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/DEGC61000595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e27d2844572577260e504eb7609e90fe4af3faa04f8d2b24e2ca80465541e9. 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/DEGC61000596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee82d55a9ebb1685a186653f15ef23e17c1d6fd060aed2abdcfe8c5d502723c. 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/DEGC61000597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260bd2fbf28c469b59fb6a2d14827ba8b10c764294abda2d6d216208d037b83b. 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/DEGC61000598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc873729ced76845cdb25fc8e7e53b71dc186c11390729297679066f5ca9f4665. 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/DEGC61000599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d20ead591c7e4108fd9dc325835141520d4d66611b8824f71ed6ea18f03b469. 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/DEGC61000600.