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 0x976320c444f423f306c2ac2a7c505ecf79e7b91cce2859c208647dfd56ab2b74. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3ab5ba7-309b-41e2-be91-c63d6c6fb6f8.json and https://artists.proofprofile.net/proofs/artist/d3ab5ba7-309b-41e2-be91-c63d6c6fb6f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pimpapapow (Compiled by Theo Gramal and Arne Mai)
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 0x54da596be8aebb44bd05d22fb529a1c610895b4a7458328215df5adbff2098bf. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/US83Z1917869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560bcc83da88280ca09987e1b8ec850cbed9ec4fc2b0658ed1f5512515022cd5. 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/US83Z1917891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0255c542876d7d99e024e6fd769d5e48b4f59fc7afb50f8cdc31923868e3c6. 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/US83Z1917893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f117840c94e8267e471c4dcb7a3bb843073e932c41adc0d35d55bd66c8c0ce. 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/US83Z1917878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23756e3c692f508e755ce28ddf354d85ad27a1266d533d780415d3fc684fd2f7. 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/DEY472378957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3996dd03e6c30249a0fe7ccdf9f7fe6262ed3b3238cc5781adb15336ec4ac52. 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/US83Z2331777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d860295cbb13a5b09bc675d3af836ae0dc519971a49362c311652489472c24d. 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/US83Z2219258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04e1ec3e5a5d12df55139508b5b837c776112d3ac7ad897cd632f3a9b1c8102. 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/US83Z2219259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a2662e28368a5b84669eece95531ac7a28e1f793ede205455d2ef796eba1b1. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/US83Z2219257.
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 0xcd7b8448703fff6f0e3ff303f17024f4357482d226838754ac7276d98a1522b5. 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/DEH742206454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4665b9a6de9ff468d5312bf1638d6cd1d844e990a2d9cefb1aa55da9d083e8. 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/QZF8N2065455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063f8a349462bf4d4453567f67e1c8ea048b6c3468f5b8597a86fe3c36e68d85. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US83Z1932389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ee0890e48814fd7616ee8112eb72df76ebfa7320ce6f92ea08ca242963c343. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US83Z1932385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1888d8ca1d5ddf35c807e906b5fa27ec8a7718a09e339a8f299e5cae5f9b57d3. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/US83Z1932387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2d55060aa871009845bd5c2965cb2c0d4a8e618a5351fb5bf375bcefa3f547. 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/US83Z1932386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3e260d45601bca2a3a0aa24bb5e28ae0c83ff0d5cc502f50abaee70f6d8a08. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US83Z1932388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c0af61ea2f8a52e67f85f33f6318eb149d7f08be2c2b4f046dd0c3c5c7c408. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/US83Z1932390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8952a4c84b443ffc844d3469e50dfcaee2d73c1ac84212e22e87cc9d706e78. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US83Z1910973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3e3c4455c6f4ed5e848b1f53b9efb3c921560b5f075ac487902cdacb8164ad. 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/US83Z1910964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6464c0964c41bd6d0f05b8ec3a8d6b848463c2aa5bbea0d20fa752c10b1ece. 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/US83Z1910967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947c8dae73975238153131f7b30aaaa865601d9d0ebfa17bd409a6413b316c47. 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/US83Z1910975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46be00f9af5516f1d74a668896bc4fc6fffc460717678f025600f4605184e5c. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/US83Z1910963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de1447b186f542230c407511c2b1269f2ec0cdba13f11a5fd77b29c5aa946ba. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/US83Z1910970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2858336ffbe9844ad5616f3aa137f8a2d13d9c0354424ed5f80bc9838ffa71. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/US83Z1910974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123bd445a441136681f17a65209a8fb12d2a52de997d59abe3d99cd2d018573d. 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/US83Z2044097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bebe17edfab3e850618923c81cb9eedbeb4bb3bda439b40b391e49202dc330. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/US83Z2044096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dc27b16a8975ad6ceddeba70e891ece013b7ee843aede785495acf48dfc2a2. 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/GBKQU2061034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a203bc5440bbef43f5a4df93075f03a55e1be0afef2376cd238de362084b2c. 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/GBKQU2061036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcdbeb5e3551dc234b4779e492751cbdc73686b8cc1e64e1c0340711484abcd. 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/GBKQU2061039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a333bcbd2ac6edda371f02f9175393d62c988dae5f5f1a45bac2f0f08b7d64d. 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/GBKQU2061045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aea5966d2c1736fefe7f7fe9793de3735d037ec3c3a2b1d741f244802f91a73. 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/US83Z2310151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f07600d0d697d0d08007c3dd960d281e98d2d1807ba74632928b0be9d491ec4. 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/US83Z2310150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8aee15837654d2d123887a5ddd6fc3dd8d585ec5635c36c1dbe9d88ae4fffe. 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/US83Z2310152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ff5dc86c2b11e1103d9f66bf3aece3253eb167bd6a0d0f5d7b6aff9acfaf73. 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/DEY472179080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bd721474d996f498074af297b4be30d93094fea83108325bb4c1d595cd0e7c. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEY472179089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2833a6972941ed10d93a0907180f409560eba6121993939826543dd49305515. 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/US83Z2038445.
Mixed - WAYU Various Artists, Vol. 1 (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdd2206b8f7bd8642acbbefe2a74c6fd41207709ee6faabab1dc476bc0ae469. 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/US83Z1917520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dda9a92316d9eda14937c7bb2153957a160186a73f8657ed0978b6c7bbb3f50. 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/US83Z2102719.