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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67d6911a805a8ebd038b594fde74f9ff2e5da6f40308eace0ffacac2d441fd7. 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/a4d88d57-84f0-4187-8649-d4dfc835b492.json and https://artists.proofprofile.net/proofs/artist/a4d88d57-84f0-4187-8649-d4dfc835b492.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282ae2429ee14ede2d5d8c598b104f89a336fdf4af0e99ebaf5a5a573da68681. 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/GBSMU0125948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213129869aaeaaa3a105f360a1de0220274fcd763db5ed9fb0cd2cb5e12cad85. 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/GBSMU0125997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1f85855acf66b7daed2e7e1fab7c5d7dc4185d8b4bea63d40d74246aafd05c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GX8LE2334028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723bda3396e651061ca0f63355915fab4c5cfc1897e6baee55edae728da0d844. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GX89G2488919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43a85110d6242c1d25f7faf8716df190868604933fe8bc95bf7cd33aac77bfe. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/GX89G2441840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a62f6e1094d77753fc643622730c9892ddb913ae439bd059a7be074f4509a4. 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/GX89G2499940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e80b08fa4c8be3ca2a0b4d4f59a6c1657d3a378fa0611a2cd2e27b7a259ae62. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GX8KD2405977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f7b490f0eca299ffdfb981a0ca7f601224535e9be86ac7a483a3e4ebf8f08a. 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/GX8LD2463538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1b28fdaa5145ce47bb633dc44dae32b21a7e38719ad8054ca958b70cb73e49. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/GX8LE2414640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32337a1abfc609facb6c87b197b05cc1b8c9ab650f2d00485a9ae69130d338ce. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/GX38U2474046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f5c3e586743093f3fbb4990497c9823b3d6ceabefacab03b0d8ecb5043a1c4. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GX38U2447174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cbc8483f044ddfb00b721cea20bd7f5200f6258da44ae6c4e5775844409b9a. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/GX38U2407013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209d4c413c332aeb4f3f0f4e87060af11ed105321f4fb9193201947e178aad67. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/GX38U2488662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7230ade2309b7f1c00c9abab0a5daf598bf5ed5ea50c2013920df31fb76cb9e. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/GX38U2481684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d5c11ab2c179030e0b5dfa8263bee431158907512f476320e45a5e41cd2f05. 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/GX38U2419743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2174377e6e8897162d913258bf2c9586fd1beb37e0bae5b278bd33e30d7458e. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/GX38U2410083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2ac4a2816a8b1eb9f70482e8f9c1c0ab08e8b6bbc2c860ca093ecf043e3aba. 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/GX38U2459491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23e41fb3e53c333417e502b5c5bb5cd3a85564b71b71e2bb10b07ab19146615. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GX4R52409658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5552c614dbeb824976a7006644ac68ade971e25c2f9437c29eb1b43dbe40763f. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/GX4R52496350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72d2b87c7613d76ea099b2cdbbc89edd25bea05e9e5b7ef5cfc45d7710094b7. 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/GX4R52433861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306b9a5a7ee92bc7f17749af26a91c7555e4d21ce7e554a909d4cefe471e266f. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/GXBDS2477160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8bc8edbb3f1d6ceaa6ac7bc65f87a43bc890e55fa73c8891f1770cf5cbbad9. 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/GXBDS2469245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37aecb8990ee5a6fd5a025dc14eb1c5524cad4a30d4b2168f932cc1bea46f997. 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/GXBDS2475665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6193531aa88e1bd1f1ec7d61ae5222291bd514f57a80f773d3a5d4b491aa37b7. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GX5MY2447870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb89dca73eabb81903d7ed69c56efe3b0078aeb6f42fe4cfa0aaa98d7d57fda4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/GX5MY2460390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4db336a6c74b9900109f62dbf5b6a43470b4c765a3d465c5825b27db738d980. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/GX5MY2466887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad549269d54bf8a05ee204ed94ded78d58d3e8fb1f223811b9abbfee7444dda6. 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/GXESV2411239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7aec7db580bad990e001db416f93bd080d66ce034301e04603a88c9fa3dff38. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GXBDT2439431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34b22f2b84567c9da1b127544b948f0589b9a8aaf5187a0178ddaca4acd4b41. 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/GX3HH2598940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db7e07d4b1d07795ee03b1663ef213481fd4962f950840970758a2990ee4e60. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GX3HH2551896.
Sounds of Slumber - Melodies to Help Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb2edc8bd70c4401c4c6260b1028cd3d0790c6e915ffe28b54beb057bd5b296. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZWV32434813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1601b6ed9a4017ddebe6b2578909cc74fbd410f6a95dcc2af7f8a4f64754ca05. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZWV32434828.