1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x25b27ecafd94c0a142a379337d71abb16f68d822408edba0c21ca7df68cbdeb3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77107515-54db-417a-90fb-02e3ba7d693e.json and https://artists.proofprofile.net/proofs/artist/77107515-54db-417a-90fb-02e3ba7d693e.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 → block OTSBitcoinBlock must exist at that height 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 0x731b556e4662ec0a1a68f2187934a623df3487a498d5063942fd4d475338cd7b. 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/QZDA52345338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404f16c53bf8dc2a3627920dae3a121e3561fbd9b9c26aad2f6d7bd8d42553b2. 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/QZES52382602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404f16c53bf8dc2a3627920dae3a121e3561fbd9b9c26aad2f6d7bd8d42553b2. 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/QZES52382602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5887d2264cd56f3aa33ea7269d2955273a10fcd9507e61b2905825b397aa48. 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/QZHN52371706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5887d2264cd56f3aa33ea7269d2955273a10fcd9507e61b2905825b397aa48. 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/QZHN52371706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1837728e9bee922ec5166146faf3332a0fde0fcf51065bd36c642001e37480dd. 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/QZTB32373925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1837728e9bee922ec5166146faf3332a0fde0fcf51065bd36c642001e37480dd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB32373925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01acd64b7148439ae366491d59d52e9111da5d915a20e0ee0e5fd2c053b9a27. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTBB2369674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01acd64b7148439ae366491d59d52e9111da5d915a20e0ee0e5fd2c053b9a27. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTBB2369674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343369f624205cb8615c6e463dd785c1c6f3fc4966174c08aa298c0f7dd4fa74. 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/QZWFJ2310223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343369f624205cb8615c6e463dd785c1c6f3fc4966174c08aa298c0f7dd4fa74. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFJ2310223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc513496775639301fbe5c4657180218bcad1262efe313641dbf2d278cce2bc. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:50:59Z), 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/QZWFP2302930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06e9c6a88c9a10c7e8e5a154f837cf30a9b4f64494b3b59a04d23e909a14c07. 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/QZWFP2302929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc513496775639301fbe5c4657180218bcad1262efe313641dbf2d278cce2bc. 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/QZWFP2302930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7adc017566f34492a243ed89b4a9a58ebdd905e42c5c23e1ea501599f42f89. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTAY2210645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec11505d0a27158b2774bb54f7b58127f2a5b3c5a9a5c1b0d92893bb5f236e5. 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/QZTB62493188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688ca22779955ccd3ee63d52e7d148aa506bbd02ca8e306ff98f012d06e14a3e. 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/QZTB62493189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf66a213b5bf8f419d09ed88bb5acbe807a480e90c51fd513fe9e8a0feca2b0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ7W2470164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3fd6cba9ec6e684b739510e36aee47fd1b90ca24f304d0c2a02a3820e20689. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZZ7W2470165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f56266da10b34a999624eb78b31fd6d4936a1f3474241c386e93c69f205c2b. 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/QZNWY2484380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f56266da10b34a999624eb78b31fd6d4936a1f3474241c386e93c69f205c2b. 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/QZNWY2484380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f68e43b8997cb7a41f4dcb007f5cb2aa4b3d9e6b05043c9dd18221d2cf87f3f. 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/QZDA72303157.