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 0xbe7d48c36304df22bef5f4a47b5675d04aa3f39ebe446bf82a8d239eb997fe50. 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/715c6e72-b248-485c-9df2-60964b8cd0c5.json and https://artists.proofprofile.net/proofs/artist/715c6e72-b248-485c-9df2-60964b8cd0c5.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 0x133bff7dadaaa67d0304f6177e13b38e4b9e78618e8c19341dfe45c99c1f4a53. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/IDAC52004149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7a9e9a665f125917730d40c8f7a5ee04528b335869304109cc3f66ab795250. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:41:34Z), 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/IDAC52004151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc0e1fb2c2c50c2c5d4186d0a41c3ad28efd8331086b779233b1c9f4f3e061a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:39:03Z), 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/IDAC52004154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b13e68c5a1072d612a7ec6361859fd19e124521da7e21f63f885202abce81a. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:12Z), 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/IDAC52004157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a8c1a52ce1d19ed063d1f88a3e190b6919682dc9f11e2c69c13568b33ba928. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/IDAC52004158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae18fff9c52b5ccbc666458a94f77ae195fa32583ca8f2740ad5a1e16164e8e. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/IDAC52004159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab952a852c0732cf58104b8ad560add50359fce004e3a2c560d30f134c914f61. 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/IDAC52006283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebe9a3652499ff041dba457e01c4e5ab6f058224167cfe4a5f8df4e190a7338. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:02:31Z), 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/IDAC52006289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff67b020eab10ee4b4d842c71c39ce96d7954307c97c9ea738c96d80658ee1f2. 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/IDAC52006291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b43e623dd14db6085094aa446faac0562d5102bc50f0ba328c2016025194dba. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/IDA191301800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2889e4136302c7e852a5b048f363726d91ae23f54491d0779d4e34c5b382065. 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/IDA191301803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda8277cf4e9e835a26f884e610c6d0f5a0bcbdc2062cf597e90fadbd1740cba. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/IDA191301804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603bdcff4e132a98545794f41c06f1db86d29e4cd8c2a71c5b7a7e5d1e481cba. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/IDA191301186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3bd51bcfec30c7f5c729964bde951af065282f2555e7a7ab107ee0174f4aef. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/IDA191903400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6fba4f2d858a6a89f368117569dc4537d8024eb0425cc0ecc998a3bf8cc959. 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/FRX282348392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18898c56422abd5409c402d1819d5957cd9e68ae48338758f6b32dad96ac1bdc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX282348393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe51ee1833b7eea2221135f8175ea6b680281d2408ccbd7796042d305b03da33. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/FRX282348394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871f4261fd5841accc1d69fd9185b67fb950e0df3069400e2ae93b5a5069a3c9. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/FRX282348395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b207337f4af9de05fb4375e1f8755d828724a4b8bfd29d47dfcb756eff1466f. 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/FRX282348396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f91f28e82d1d2f9609366ec5c3ea5fab2f5cecbbdc2d17de5c352432585898. 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/FRX282348397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40fd6fde7da2745be450a71689dcaf5d83586ba4ce4170a9e7f3cfef17cca5e. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/DGA0L2414929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac221446f2953fba11dfa19d31fb8539582c4b05a423cd5f28a66dbff181d4b. 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/DGA0L2414931.