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 0xccf4cfd1fbc72706d70b48c249791d1a75f2fae2d74948a526f2ca3ba0d939a7. 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/ba8cf724-d8bf-4ffa-8fdd-29651c8eed23.json and https://artists.proofprofile.net/proofs/artist/ba8cf724-d8bf-4ffa-8fdd-29651c8eed23.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 0xb272bcd5bab6d6d43ac1ce71b06458557f84ddf3b34e1e8941aa8dfb87f67d17. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QM4TX1945544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480e4aa4cb833e023d0cb0e0960df5472def5894c269b899060122c2fc56ff63. 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/QM4TX1945546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd127225ca74949de17339ea6774a6f0773f35e46ca804e1becea0f92e785c844. 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/QM4TX1945547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130c10978d2a06deae142aacb9335a31c59b4e68e5109f7bf5edbf986a1f6e9b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:48:25Z), 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/QM6N22081451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ac1356f92acb01f8e3e695e87e3b66b225838f20d68e177a208246a87b5c84. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6N22081453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6295c4e2b43f510427cffa2c627ca06526ac917b78b92f5b0c6d9b8282bfbd97. 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/QM6N22081455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306b2d6301fcdef611a0f722d0eb4741aa41ef1c1506379fd437fc4f8b387648. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QM6N22081456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c4af09dbe16effa8b2e817555c59c87c6b95a5cb32aded56d7ec0f571655d4. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QM6N22081458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99a71e776377502aa9011fd777d65d8d56e862476b1a5adfef5448f5534f5fe. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GRSTY2000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fac1e023475dff7e8933e5d0c83757603db45c18855e93f9f5594b365be55fa. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:28:43Z), 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/GRUM72102391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b50d07afa6e7af20ce33b17f9ac703854b59ebeb1adf1d616034cb06039ff37. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GRUM72200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7265b5be57d2905e5932a318f880b5224a8a84789fb893bfba2a92abed72d774. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:25:54Z), 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/GRUM72200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9ec0800aca4c4e441c8290d4a6fc874e9df65aa93e51e116da987e86c1bbba. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GRUM72200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c3cbf1179ef944088951bd1b8529ee011ca9262c85375b6c24efd62b7a511f. 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/GRUM72200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d568581949df51a1773a4537341f081c05c108cdef27b19ff44101ca5196556. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GRUM72200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616e6a7914b26e72660c0a22f63c343ce49cc1c9d26f427f02396632fb326377. 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/GRUM72200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91df5e023c6d756f487906c503bf8ce008a6e921948ea05aae14390fb916f890. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GRUM72200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48333d59e7b8965ac0703040f17773441d6aaf51e73c06f2778c74354310bbb2. 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/GRUM72200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512191652c3cbf7ba1d15278d6b17d86574de049c970001b9b0126cf84cb0c6c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T20:40:00Z), 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/GRUM72200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132f973ecbd51321b6c6d1bae00cdb2796ad44d84d382640555f967af10c086b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:07:36Z), 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/GRUM72200629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aac5a582cfd2b441e1a1670376e6b771e824068873fa6f28cdebff4169c28a2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GRUM72200633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce267a80143800167c5990e29ca6e379779c05b789fb746075467ee15469c555. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:53:36Z), 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/GRUM72201257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30ec490774e126421de1db1f4fef5751c26981c33335ca176d35d1322441761. 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/GRUM72201633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc319c457f5bc0afa97277342393397bab04e1fa5322b18ddeb069b2967b32adf. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/GRUM72300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc027c6614e4600e9f34ce8ad5e41f091145ffe5c72900dd113afc162778fd17. 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/GRUM72300942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b516ae8fbb58be6037352a206cf8f11999e359d7911747a46abe6641fd1601. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GRUM72400315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c9b07cc511b7c1f2d63e67dc08cf4ac21fe334323bb41e34243b9d558c0b1e. 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/GRUM72400325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff596433d01b3eeb2214c60137181024c510ce195ce1fc0d383a20206b142266. 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/GRUM72400327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd170b03a281b1a2a3b22b66e861a3b21340a0492c6d97eb469efa3b8b787f2f. 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/GRUM72400328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef9a7c2f2dca31998782d25acfa6423b277f3406de15696325e91c39dd4020e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GRUM72400329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3e328d0b7654f94e9b4af69aff9df51b36366deb1b4cd7dc6d4544910ae517. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GRUM72400330.