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 0x982078a381074039047ae565697a7c3cf2dcd9e52b541e527d8c60869c17a659. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a8a746e-1bfa-4d73-8afc-5168c62f7771.json and https://artists.proofprofile.net/proofs/artist/7a8a746e-1bfa-4d73-8afc-5168c62f7771.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a9191ed7bb943a5b01411ff5b80a33f4364d629176bf432f93824b2dbd4e43. 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/TCAFS2173974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e68291c2807c5157a8422b1b0608acbc90055adcfbf39578ad025c2cac76c12. 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/AEA0D1822521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee52c59255cf077d7a3ae41c199d4434a50d6a7e0e3de6615584ca0bb68caf4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAGN2271981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4195a117b6f756af372ffbbab9d3c1337ccce5b98caa4949e4fcea1713fdf9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAGN2272097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552f206219d12fccc686d08e002a84924168bd244c3b2f6b98a4189b7336ea36. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAGN2272134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e6eb2e8fc50b4a6e77fff28e466f976a961cc30bc9d113276b7ce4c087cf4c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAGN2272143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b02f55d66c3d573c1046eecd45aa745bcec17128f094fe9a31a391d342a52eb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAGN2272157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2c9ab4ba678c2be8c669b4767ba0db9aa3b869617b412abe63f6bb3ba293f1. 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/TCAGN2272163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec0ac8c83c43f0fb0d735b1d708344bbbb4e859e7c06dea74168daae7bc9bad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAGN2272178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3024f25ab9eb366131029d316ff66385f1c694df637f65d3d276d37cc2ce191f. 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/QZRP52469871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ea80a1d2318bf305c82f2963de1e22198b9901f8615df7ca458f5444372b3c. 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/QZNJY2477624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab96d903635432fc17de6a6bb965fb48aa1902fe64e31ebfffe7549c9834a1d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN52347782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb116afcb268aa735f90e56e6f5739b09fdd4128ce1c979736d182388907cf3a. 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/QZNJY2494395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59a265c7ef0b477190658c52f88040842db4cf0925f8cac7f8fde382eba9a59. 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/QZNJY2494394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e3341707cd146a66129f7283b49923909d59b220e6059be257ac892f7b1449. 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/QZHZ42223927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c275b8f76ddde8dece15e51e8966962c27d4e679b41fd66536650ed41d448fb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZW9K2449123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd9d390027ca0761bf4d1bb70909c3ba9c9b3e91a7093f4a7a5d3ac32f64d7f. 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/QZW9K2449391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ed59119598a6e1050571c73f24e59bb6c6013c155ef77db7f470d0c15c1d6c. 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/QZW9K2449384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ef43c4335bb51515bfb1055672306797d92d606b09579880363840dce8e56a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZW9K2449190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db6249120a016c006c03ee0981311fecdbf2e647e5395a716364727e9e05273. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2486702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61e48fe2e03d61d1dba15c15a72ec0cef5933f450f4d206efef1dad7a569b3f. 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/QZW9K2462070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e16cebb8e43171d70d00363377318e397fa191ddb87080671f749cc8a3ca37. 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/QZTVM2460648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12028f1c38fbb967618243fa75d2d3e1948cdf12c9fab3be3fc74c1bfddc1f05. 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/QZNJW2469896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5edf84a20c08d14a798badf41f7148d4209ffd2057768f566c2cb9f59c0fbb. 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/QZW9K2449002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4213111d731df0dbe420aa1294afd75674a0e3d59a84d419fc24df1d3bcc41d. 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/QZW9K2450481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bcccb0557632e8517cef2bc89be348303a6f14bfa35b0ab20499919df5ba5f. 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/QZW9K2450479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01763b19b470fb77b0e517b320028fce906686ac9efe9fc2606503534bdb1866. 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/QZW9K2450477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e541ff1bbd23ad9407001e2dd77884e0a71131a7bcbd9a15c3e72c8417a1850. 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/QZXYG2404417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efcd0afdcae05641799bbfd03f83579bbbe3665b333ce585904aea1c699500c. 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/QZXYG2404418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a91aaaf48dac4adba51c1236bbf9a991a485294530c0d0671099ea4ba8cfce. 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/QZXYG2404419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45282153dac10375a839233f04f1838d769fe4a0cd8884c2df210b2f706a9a23. 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/QZXYG2404420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4664637fa71cfe9c43daa7fe5f5bf3244356e9a3acbce2aad0c846bfe4745fa5. 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/QZXYG2404421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecae1dfc0b5cfd3ddc2a3ed96f711f28f82a62270b195127f82a5448904ac7c. 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/QZWFU2411098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4025bc3cf0dcd1ed5a9145b152c32f46f4e8ed1738b00797de3692141e533d94. 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/COAF42498706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d121cdbc0c6b7680374aac1d4eeb18614b61942f56da4a3a5865a32df393d3c. 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/COAF42496581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8abfcf825ae28ba0664d2f92dbeed80cc8cdc9bab47311bbd19114435f5d574. 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/COAF42498278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7f0107b8a4fe2abe46475bae1c11b0fd6815f6e12491a9fc8e3186f86ee5b4. 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/COAF42498286.