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 0x5a6fcbc2304c8e25f1bb79b15dac57e89596cbf198642da1f78348e084d864be. 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/ed8f2456-b8a1-4ba1-82e6-c9651294c666.json and https://artists.proofprofile.net/proofs/artist/ed8f2456-b8a1-4ba1-82e6-c9651294c666.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sugarloaf Mountain is a peak situated in Rio de Janeiro
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 0x1a156c3e8a00bdc3e15e0c741c8d92e7570bb437fdefeb66924e646458b213c5. 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/QZDA72399214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c98c65bd29fc743f2538adf3b4dd08b08c13f449948b3d1a1731f84dedc9454. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:10:51Z), 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/QZPLS2361510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620bf3e91ea898a3936f4686853b967a6bf15a33b71f0e42123edefa50876253. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:03:20Z), 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/QZPLS2361512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a2cefcd8fa14bc024977801e11db2c1d2454da84b3b84ba61d5a65f7dc0e65. 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/QZPLS2361515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375e33b319e0f15fc64f5731e4de8a7ad7f560b36d1a6dda73d1a77abd09fed2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:42:30Z), 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/QZPLS2361516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c829c94c1cd39c1126000f10eb5d33f4a3b2b2d67f330193781730adf0fd8a. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:36:13Z), 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/QZPLS2361517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafda0a8bea4d199182621041db8e96f1b80478ea800ea6e5a9d8b9fad6b9dc6e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZPLS2361520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8173e88c655a7e7ba850ad6c219a0797b66223d57d0903fe0669d74a230511. 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/QZWFE2319265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8349d2c5e992ab83d44129648d0113a3eabae884f0bdaef7440482a243fc492. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZWFE2319266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9f5a4f8a042a9aa6cbe5aac232532cc5cf91fe81b42ae2a421d0e31878e18f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZES82453451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca723b23c0bb7fecc0a9ccda0006480ffef0d6479593ede664657a4d8a51fa90. 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/QZHNB2464583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fd9636b4eec68e4aeee41113bf03d8cc48404e76f281e226d29bc044e0a168. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZHNB2464584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578e905634a39f266858d79dbc3483413ee448415e7b9468df4d34abd09698e1. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZHNB2464585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb7b6c509018de7b8c74185a7d27f21de00bf0a11299a92645c90fee91597b2. 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/QZHNB2464586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611a14e7e86a798b700af3c1aaf8fc00942e0094a2b7d34e322321c54c6ba42d. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZHNB2464587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24aa517b159665a9c44925cc3c7acef6e8ae50a9c3a097c4941fea6521769bb1. 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/QZHNB2464588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9877392faaeef77983415e6437063c7957707f793b175bbb0f323c9be2a0690a. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:43:35Z), 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/QZK6K2459305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0514201b4f7f2533e8f16157b34be87241fc661728b77f9e7311a2a9627f648. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:16:44Z), 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/QZK6K2459306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd6f5def3c07263d7f2739eadeaa6b3b44ed97129085e3b03d728c557ed5c8e. 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/QZK6K2459328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b25a62e6c4ab22a55aec78060442b19265b6933bd3bd1775699f88c43914c1. 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/QZTB32471665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2984750ac0d8fddad5959ffd81842ca7a02ca3547d90b93e7e52f31e74f79f6. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZZ7X2470767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcf04d62a07465e5569651b6541da4703c425c9cfa8090e1e1c064a974db55a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZZ7X2466808.