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 0xc1e4dff2ef0bec556ae9232a9e7bb92425ccdb798235408ee7fab5572a4213d0. 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/eec176f2-9a0c-404f-977f-e0c3089ee30d.json and https://artists.proofprofile.net/proofs/artist/eec176f2-9a0c-404f-977f-e0c3089ee30d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Loa of Music (The Complete Sessions)
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 0xff1cd2877e6442368df98928218d66c5f45cc1e5f1cebfdd083a4404fcfdf0b3. 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/NLD7H1600063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf8e6f3d86dccfd1824619d16649d5f94f96a9738560b8787db7f42ee82b79b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ITR932200178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0c6909a5d4bc93d4e6df945502374182991e384c0cccc587abca5147411d61. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:47:02Z), 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/ITR932200184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf30c48eb37cdd99c81d7f622de4b1c3cb732f6482a02086066580c27d49e60. 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/CA17T1100595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c2eb811549c53093d3614940d61083d2a63561592831d23cb81c18b708fa94. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:57:20Z), 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/NLD7H1600057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2b0366a012aa74df688079d2e0fe6d82a22e258f4990a79d5062779e2ba0ac. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:08:14Z), 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/NLD7H1600061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3441a3e9227878b0fd74ca1ae182622730d504cbe5bf9410c04546ec6228904. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:52Z), 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/NLD7H1600062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807c0ecbe9859f7255d84476988ffdbd4ffaf8ae63e880ee0f5eb8a6dd9655ba. 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/NLD7H1600065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375dbe4c33ca0ace753b23ca6955ec26bbb28e9545d2cb34b686457bd3442f37. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/NLD7H1600066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce404b5990cfb6162fb96bf3cc1c8ffe1d1c8675acd160bbd8839d955b40b3cb. 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/NLD7H1600067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fa8a382bb7133d337bc24f13681b7739878f2b92159fd795e609acf57f2fcc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NLD7H1600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a34648253be088b460826b671c00166319cb8b4d82e6869a2ae2fea7b4f129. 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/NLD7H1600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabc809c33b63893ed00bf83d874b635c6ba33f9b3abc40e5c16fa6f258c277d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:45:00Z), 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/NLD7H1600070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ec25904a5a87d9204146c08af0c62741ad1da60cceba9d34d7ed2b9eb571ec. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/NLD7H1600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38e7a0a7904f1ff1ea77c673fa9626e3669773bbc4c01f1f21e792f4941d7fd. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/NLD7H1600073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0082219f05d5d969490b31588edf180aa500f101fa72699d15334233f9679a93. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/NLD7H1600074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73237bc88c6225e607ac845c8b7783c234572e55bd82659690c67e6b7843d243. 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/ITR932300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51393f35aeaffd9ba41f5e0860982bbe2c430c3e56d1b68a20a13a1a346296a4. 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/ITR932300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f936f89fdc922324741e71836dc11907c98c29dc07604aa206dabcd7a2d447f. 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/ITR932300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daf59fc5f47a4dd2e0da7adac98f97147da34d63422f8e9275b4434ad0d9537. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/ITR932300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88c332e22589872d8868cad54f772043eed274be0bc305eba0552139ba74570. 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/ITR932300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37db76b46f7fa5b9518d6417971ff905512f08bc2866fea429390cf186b34e96. 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/CA5KR2529968.