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 0x03edb1e5c1ace3ef76a219ae2ddddfd5778b6e884872a6b1c17ed406e32af32e. 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/33afdeca-4b95-42fa-8913-f5c961a3d85c.json and https://artists.proofprofile.net/proofs/artist/33afdeca-4b95-42fa-8913-f5c961a3d85c.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 0xf5100ef9a00ded5a569057abb9399cb76da1f24e467ae05d727153cafe08b1e8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:49Z), 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/JPS801406219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1474a3f0cbc7f470716d28c5f3cc3d828f77b9d053f4f2af81d9c51803aa6f. 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/JPS801406220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1c48ac13c38ff8d1f44d655aa8842ce692867606943f7be18c07a5c57d4bd8. 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/JPS801406221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656b7e956589b8117575a419254bc150ecab22265cd708544bcde24cddf6009f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/JPS801406222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14aae85712b3edc5c77ee1e5f894ec233d4fb83f630eefac2cdd118b6a9e21fc. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPS801406223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb087f31d0640c3b2b793bcd2018150744e376beb9f9afc023697972ab42a141e. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:09:26Z), 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/JPS809908937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf42e614ee71caef8aadd5880443479a8d725dac9796a21267097a2a71d0f2c0. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/JPS809908940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f929bfdcaa6d18e3da4aca2040c4d7421ddd1f34f422c1001b6dffd009e4d8. 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/JPZ922409962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bcadcabf62f789da3cfe3cbef4a2251a17aeb91b86fe3548f166dd9d041ef4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPZ922409963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1a9985c3265dc19dd47ab37cfad8b655864d7b99cbade755590f8600a87a66. 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/JPZ922409964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f4757c306ec2dee81a80a54e309dc073c85795def80f1ac1c12a89154e106d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:34Z), 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/JPZ922409965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d08c2fc32cde1f60a5e598796fc0054cfcde8ecb6202da2a5509d38b3b6795. 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/JPZ922409966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe036edbe75b75d0b342f01c12106b9c2762761c10645afc66a207a6ea4560b1d. 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/JPZ922409967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8565952a1cffe54888a8c9618cafd4ad438a3733791e05800d6ed39039c08c2. 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/JPZ922409968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215f62fd0972f1d9f3eda6c6049781e69c242925fdf99202928f3a5a2d75e38d. 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/JPZ922409969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa309c1355ddfab4edcd41311d7044b89eb9d42cb4373a2f4e57a8b2c3f09fc03. 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/JPZ922409970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f929bfdcaa6d18e3da4aca2040c4d7421ddd1f34f422c1001b6dffd009e4d8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPZ922409962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bcadcabf62f789da3cfe3cbef4a2251a17aeb91b86fe3548f166dd9d041ef4. 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/JPZ922409963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1a9985c3265dc19dd47ab37cfad8b655864d7b99cbade755590f8600a87a66. 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/JPZ922409964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f4757c306ec2dee81a80a54e309dc073c85795def80f1ac1c12a89154e106d. 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/JPZ922409965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d08c2fc32cde1f60a5e598796fc0054cfcde8ecb6202da2a5509d38b3b6795. 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/JPZ922409966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe036edbe75b75d0b342f01c12106b9c2762761c10645afc66a207a6ea4560b1d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPZ922409967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8565952a1cffe54888a8c9618cafd4ad438a3733791e05800d6ed39039c08c2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPZ922409968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa309c1355ddfab4edcd41311d7044b89eb9d42cb4373a2f4e57a8b2c3f09fc03. 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/JPZ922409970.