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 0x0670ca284d915117061ab9d9f6703db628f5f20589e774f9a107cfe9b116e626. 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/2e7604d8-c79e-4828-be4c-8e0160d65d5d.json and https://artists.proofprofile.net/proofs/artist/2e7604d8-c79e-4828-be4c-8e0160d65d5d.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 0x2b86d62178dc2b649fc84f9b52dc79fdefbe331bf4912b54dbe0fa00a3884353. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TLVEM2474474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61ea2c98a5edfa473095de481074be811ec9313cc9a9aae3fb9340b1b818e54. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEUE12415609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3781a19ece5717383056ff6a155fab12868d33ad08dc6133cdf3dcf503e27f04. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/DEUE12415610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8561c326d3443ed391942ababbf8a5112f75f2922b4c03339e4ca63af8f3506f. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEUE12415611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7759ef8b7bd3f94888be5d11383f681544704e9dc172b95c3f042b3f9a50630d. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/DEUE12415612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026ecf3336857ee9b4fa0e180545538b0f0f17ddc73deef378326eab6f30b8ee. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEUE12415613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d36ee4025604d0a4aa41374c78b433ee59086eefe37b8784105f530c4a65f4a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEUE12415614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f6a4e2ba5075036db29158a2b901f81e3cd100f99295b25b537ac26c8d7e74. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEUE12415618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dd7f04fcd9b8c653d425e3de8f009452267f11862ea1051aaca96445b15bf7. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEUE12402166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0e96f7bafd9c2b8dd0b4880b00654fee2e43e8f6aee045da2e3b828571e615. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEUE12402167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125f98875123f6f4d81949ad2a92270b0040431bc91ef03b13fbb4afe6532f44. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEUE12402168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ab5484909b3777a8c6b0c497b581978e8e779ee87e4564826e7e47a866fa0e. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DEUE12402169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900d8a5008ba50f80cac125a8151348f9b75daa852bc6334135febc4ae968296. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEUE12402170.
White Noise Sleeping Aid to Help My Baby Fall Asleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796f01bb34276a1f959ac6761ab2b67c5d4cdfb9e7c2f329c990eab8838dd98a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEUE12402171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256d322c75525190724b1cbb2525535ee5a0027bc6e4b8a5c91139348a129a3d. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DEUE12402172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6215939f2a388168b180c0b4606a32f7e75acf18d80b92fb03a6c928dea0eeb. 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/DEUE12402173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe382b3d7bc29f0a76b4ec62f0363d3c8139af9ad9b5d0dfd1cf7ed6f9c920645. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEUE12402174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e66fe405fb8580db64d26b9f86b20eaafaaf211803db78b23e97dc58e430082. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/DEUE12402175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88b5aba5a47210686f69c89b7d481da561e9fbc38740f3b8b4d4c5b2fe3a66f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEUE12402176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cca66e1695adae775bd55b38acc346de951d624547b04140670ae19ef4592b. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEUE12402177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80e7f2c0c8d41000a440a5027c06e282143a42724f058f75c9fbf2773cb6990. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEUE12402178.
Relaxing White Noise for Baby Deep Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f4477a84149d20c7fd5d0c8c9dd0c655f809a987468d40b1c2d19d8b2e395f. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEUE12402179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6416ad8696532c255ee1f7610fcca55ecbc4b37c5ee6b68fe4034623a3ba926. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEUE12402180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a4ccd6e3a06d4fa51002d838f85571d910e27ada489f35399c525ab84ca698. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/SE69Z2409707.
Pink noise for improved mental alertness
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7736133951b610920e81e9a42c65b1366e9718b01c39073ec30ecec17beabec0. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/SE5IB2287703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf765b1c299cfdb0445749c3f0113712be73af28db5f3a5755b466e36544b48. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB2287704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a530d4b0949ba46ecffb7f947a16ccc380a3292d7e372e11ae308ad21f1ab6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SE5IB2287705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e8cb10097887bbcdcb1f384bee1f2a010e0e9a02895a275a759657e436c99f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5IB2298817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78430b44ff187df351381a0a9db4df84cee72a88c0f373da8c758349c41852d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5IB2298818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd46ad62f3ec84929423f46939311945d925583c365b70a8a4de2e750fc0dd2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5IB2298819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1d8717e6d5980e1496e44a7205c543d077f389b3f03583be81a693a62b8835. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5IB2293809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81550ab6829ff3f1727ca0de8b25f0897e593c0f1753c29fe3ecbccb04161ae8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE5IB2293825.