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 0xbe161c5bfd3a2dcfae933606b1f0eb15add4ad689f155fd2225ba0a2f4282490. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63bc6145-e827-4941-9b28-3e52615e82aa.json and https://artists.proofprofile.net/proofs/artist/63bc6145-e827-4941-9b28-3e52615e82aa.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 0xf9c59c3b018f4880043f195be5c1d3781196ed7eea8b0010f26282d82150c29c. 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/QMPKX1770563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8453147c72829bb85fe59eb52144d2512b9fbd752d5595d36a0dcba3121c30f0. 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/QMPKX1770564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6484a8f5fff1c21ccac531c2042ff16ddb42e3a6e74ad74265bf5264dcbb61. 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/QMPKX1770565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699b8f40beeac0b65e40dca9af077f99202aeed1499597de7985e223b42f9073. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QMPKX1770566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a5fdce92b333b8c70d9fd641de09b099e1ccafcefb0ce4a9e3ffb0f9bbad9f. 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/QMPKX1770567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a67b6d3243b9c37c9de71a6e48b1d8bda0a7caf6affe239098d8141ba08b21. 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/QMPKX1770568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4989b28d83150cecc04f57b58054d398bad861e225950c213610d386dd0051ac. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZ5F41700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017fc4d2984991b44f0cbe328510ff8a0c9f8bcf53544bdf2dd41e5f4bdafe13. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZ5F41700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fec25a34e4c3ad334898be7007ce5ad67261bb4b08b0e9c6cdee2312546edf. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZ5F41700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8758989a3800906503db16f7226d9065fc609fe4005ba0a0cde12ad82686c0. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZ5F41700044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c52383a5ad34047fae1cdf14d34a0a2d272cd20539e1e69f09816fb816df1f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5F42000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aad16de576d23a4a04719d5c06e2247a25dda86562fb9f253461040a319400a. 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/QZ5F42000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9ab7f3e4e472c0121cb021f2cbffc8834f16d8f92c372fd35308d5ed2805cc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5F42000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f52a80f7302ca4f86e2256432c0d80c2167852a95cf8058dd26c312754cf86. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5F42000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c48bb14b65307c238add97a2cc06a790a0cedbc7bfd068b159eb49c04b412b0. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZ5F42000089.
Dark Matter (Isolated Vocal and Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fa35b9534c1e47e45c031bd4cf026882734c6bccb3ba13244d3677f8cebf21. 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/QZSYP2371600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539ab05d385076e31b451a14ffe0eb15bcc6be7a55262608999534cff34d2c93. 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/QZMER2232347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe265891df20e3a488acca8d7a58f193ece82f406212e2a5fa15cb2f858050335. 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/QZK6H2299922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed29b745e198ad6cdf1d656a616c19d494e01b1cffdc0c9ed7340f78aad8b67. 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/QZDA62252165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a07f152eb018dbbd2899f7ed92b5f2cf650e9d7894940b9d277b9264cc1bf6b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZTL92386498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc336d91b7eec2cda0d874b41db66db97904903cc5d258a5e652b40b0976225. 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/QZ2RP2103702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89307aa13fd56d78e4c6c06d1231429163d553561b9c527616d95fa49c8328ae. 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/QZK6M2112657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b0c9419720c8d0f21543bf8ad184c2c02af0d2696b843f69741e5bd44d468c. 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/QZK6M2330424.