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 0x83e0db4d5cf64f7a2e54429aa833ef0c29675ed5854523f69d16f41f85518fd1. 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/e71c14b6-596f-430e-acc3-632ed1f7e048.json and https://artists.proofprofile.net/proofs/artist/e71c14b6-596f-430e-acc3-632ed1f7e048.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cafe Americaine - Music from the Sea - 50 Beautiful Del Mar Sounds
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 0x6d3b3735b28dedb76044130b2425bf77cfcb85db98a38c87c791cd3fb964501f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEH331202519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6159c78f707c4c0bdb2d16cb9820995ff57881fff1d13a8b632e763ca58691. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEH331102405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734437af4d21b38b4f927ecaf20b9839744932ed1f468267c9803de47dc49c67. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:04:45Z), 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/DEH331002401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473e5b34403393dd6fbd5e8ddb126715279d2bc4863781972c4a88227b174339. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:08:06Z), 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/DEH331002383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3e19fc6f9b41ecb276d71c5968e0581c898d445b4519618ba5a2f5ae17cdaa. 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/DEH331202560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fff440b4aafb892bb5f6622d3242515c117fd90848312587202ad2c360c8b95. 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/DEZ650518166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff413412d154682d2c075ace8d41cc6b6cdfda7848e9232613da807110a0bad. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEH330902161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63152ba6ec7c60fe7980e368c0b8ce7249e5a149c22b66a40fce9552e03a2ff2. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/DEH331302678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbf073e85b227e6fc7ae3c0b1f0a171af1236a62434274d7e98fcf20f00e788. 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/DEH331402775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ba36dd7fd227c49232ba4950ffc1e220b38b212a049088d02daca2f410893c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:49Z), 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/DEH330902236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dff8c5f815fb6d8533093bd8bdda71e87d85b3454e13a30e44556e4f68763ad. 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/DEH331202473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494a9a0d543fbbf92d6a4b00a9802ae42d514676358faeccac08ec3deb135091. 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/DEH331703464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb6995116e4f53d0ede58b7c090449e8fadb3719fee4bef58b3646e6ae19222. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZWDE2435137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb666b96957cedfd748718f59e1e94ae646346aa56e5a3006c13893ee9125a4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWDE2435139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c77c544b4cadc2e60c0348106ad21f59b9ae2f00a08760b50b3cb6eda10e38. 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/QZWDE2435141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bd62fe9a48960d85bf1bfa461a8440de6d04596c5e199fead0b07121cb01b3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWDE2435142.
Maretimo Sessions: Sunset Del Mar - Pure Sunset Feeling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3b3735b28dedb76044130b2425bf77cfcb85db98a38c87c791cd3fb964501f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEH331202519.
Bring Back Silence - Cool and Lazy Afternoon Cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b09de79be1d736d3e5dd561ab302cb4f00e9857b2cc6f024f426f4c9cd8398. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEH331102403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a089833d59a5386be1b54df83a27adcc1c3b77337b9c4cbbac6fdd139746397. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEH331002382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cd26ad7c55cc6e11e5f3bdbea8845af593884db661a0d6e9c7d803caf76034. 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/DEH330902296.
Maretimo Records – Masterpieces, Vol. 1 (The Wonderful World of Lounge Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fff440b4aafb892bb5f6622d3242515c117fd90848312587202ad2c360c8b95. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEZ650518166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80ab5966113f64539dbd8726b6084c69626b49eacc2c68e188ebc3e20f6d7bd. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZWDE2435135.
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 0xdda6e416a0e154dbc92e9773396965349b583c6fb643498360dd28ad3171e85b. 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/QZWDE2435136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57210c81d08d41e1346e70d87b7f49bb1dfd81352a81dd843500415cb741af5. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/QZWDE2435140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858dbf51f9f3fd61861c38be441c0be1d5c72459265f07699e5edc87f90ed0e2. 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/DEH331102406.