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 0x924c2fdd7e02977f3d22a8f2260595f03c070226daee04a09281fe8937975679. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/265867c4-651d-4901-b81f-771aef94bea6.json and https://artists.proofprofile.net/proofs/artist/265867c4-651d-4901-b81f-771aef94bea6.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 0xed705256e2a9f7edeabbd16e35c154a1e84f1233f0964abc2d6a6b0ce8c102b5. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCAJO2586513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad98fb957b20ce8965defae37207e56f67d4129da6a5ed5a016aaa0b3cbc05c. 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/TCAJO2586518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa808e0abf2e52da3debf9110ec9cd8f05e4a816817a1872c8d60115c014d2a12. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAJO2586522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ef433ef907919331b1386aace6a381e76ba23c5d13a0249a3133275e30c42a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAJP2586524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61453e09ec2656abd27cd71a64784e606b647f86fbd6062cc63a0f42d0ab724c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJO2586528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b965b3f8654a2d0b2114b8caff0903e2dacae5e15c2d40d1b175ed4141ece2f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAJO2586532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e3c4953b293ab37817edbd514246ac7487f08ff814d81b102066cf9b17fc10. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJP2586535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c6779f7322ca77a3aface58279bc01ad5fb003eee4e8bc6b0a524caafcfd60. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAJP2586538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2e87bc7d79b90b70dad5ffc121fb521bcf4418b060e9141b65f8f326474c80. 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/TCAJO2586542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb56a259c3779ea643ae9028d10fbc68789daa4923f2af106a5a604cb0a553f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAJP2586545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd168f326cbf0cad5b7d64146236845ce5022cd6ad459b79233bacaa938b1b603. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAJO2586548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb391d74e8c80dae9b224bf974694a785578114c9a657ca5adce7e56009e8f138. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJO2586551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f7713379e3b9dd0cd9aef296de77f3e223c31cdd3e9c16bb42704aee350993. 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/TCAJO2586553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7540980885a2ea7581eee12c2940409bbac4648cead53babafaef91d8123c4c1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJO2586555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd355e7de8ae546eb985b17e1492acc72d516c607e09c962c6c5bbf00831d2eef. 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/TCAJO2586559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002d448f85f3aa29120382f58f0c2a606cc6cd06845a5f7fec1141de041b6955. 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/TCAJO2586562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa660648b594f01f0a56e8d90b3083cd26833efe22884b79badf0b56063b81342. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCAJO2586565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a9f7568424c82b2eaf934b6286adabde8a3773b9e2283ba2f530ea983d09d7. 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/TCAJP2586568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3168303701e1dc8ee4652a60132bf65c7c830ccb06a331d4c0d4d6fcb8db9c. 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/TCAJO2586573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e4cb5f17a1bee17ad115cf27610b6e8b08699fce4731c64efd79ab15ed4cb2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJO2586575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25250b6a3903eeaf32a2bd1b778a25c98c367add54b4d3f426e1793c47ea63e0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJP2586581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6affb6ba2161a097691df5ac2178c2aa08418ed7f5a64b29673cd27b5db569cd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAJO2586587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ecbf09bdcc16359a8d3a31dfecc6e776bf3584046663c40c614944c8aa9f23. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJO2586590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24fe7024c248d9e6047a316447f6981ec13771128ca4e599d741c0f427c3b94. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJO2586593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c560004d75709ce5a50e3b457078fad4d8c1933157d253dcf835fc3a5497312. 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/TCAJO2586595.